@article {15794, title = {Biological studies on two sibling species of Lixophaga (Diptera: Tachinidae), parasites of the New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval)}, journal = {Proceedings Hawaii. ent. Soc.}, volume = {21}, year = {1974}, pages = {485-494}, type = {Article}, keywords = {Genetics, parasite, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR11100035917}, author = {Waggy, S. L. and Beardsley, J. W. , Jr.} } @article {15702, title = {Pheromone trapping of the sugarcane weevil borer, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae): an evaluation of trap design and placement in the field}, journal = {Australian Journal of Entomology}, volume = {46}, year = {2007}, month = {17}, pages = {217-223}, type = {Article}, abstract = {The sugarcane weevil borer (Rhabdoscelus obscurus) is a pest of sugarcane and palm plantations in high rainfall areas of far north Queensland. Pheromone mass trapping of adult borers is an effective method of monitoring and may also impact on their population densities. Trials to evaluate different designs of pheromone trap showed the \&$\#$39;water trap\&$\#$39; to be the most effective in capturing the highest number of adult borers. The water trap is a 20 cm-diameter pot with a plastic bag inserted to hold water with pheromone lures and cane pieces held together in a plastic container suspended over the water from a square of wire mesh. Results also showed that adult borers in adjacent fields are able to sense the lures and migrate into treated fields. The sex ratio of captured borers in split-cane traps (which is a standard population monitoring tool) was male biased from February to April but was more balanced later in the year. However, the pheromone traps mainly attracted female borers all year round, except during May. Thus, we recommend pheromone traps to be deployed early in the season (November to early December) to attract the maximum number of adult females at a critical time for the population as it starts to build up. In addition, placing pheromone traps inside cane paddocks did not improve the total catch in most cases. Therefore, placing pheromone traps under the shade of trees outside the paddock or at the edge of the paddock under sugarcane can be a feasible mass trapping method that can easily be implemented by cane growers.}, keywords = {Australasian region, Collecting techniques, Ecology, Habitat, Hosts, Land zones, parasite, Population dynamics, Population structure, Rhabdoscelus obscurus, Techniques}, isbn = {1326-6756}, url = {://ZOOREC:ZOOR14310066353}, author = {Sallam, Mohamed N. and Peck, Darren R. and McAvoy, Catherine A. and Donald, David A.} } @article {15700, title = {Distribution and sampling of adults of Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae) and their damage in sugarcane}, journal = {Australian Journal of Entomology}, volume = {40}, year = {2001}, month = {13}, pages = {281-285}, type = {Article}, keywords = {Ecological techniques, Ecology, Habitat, Hosts, Land zones, parasite, Rhabdoscelus obscurus, Techniques}, isbn = {1326-6756}, url = {://ZOOREC:ZOOR13700066724}, author = {Sallam, Mohamed N. and Garrad, Steven W.} } @article {15646, title = {Pathologies of the New Guinea sugarcane weevil grub. Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae), caused by the {\textquoteright}parasitoid{\textquoteright} cane weevil tachinid, Lixophaga sphenophori (Villeneuve) (Diptera: Tachinidae)}, journal = {Proc. Hawaii ent. Soc.}, volume = {20}, year = {1969}, pages = {579-581.}, type = {Article}, keywords = {Biology, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR10700043200}, author = {Olson, F. J.} } @article {15647, title = {Mode of entry by the {\textquoteright}parasitoid{\textquoteright} maggot of the cane weevil tachinid, Lixophaga sphenophori (Villeneure) (Diptera: Tacinidae) into the New Guinea sugarcane weevil larva, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae)}, journal = {Proceedings Hawaii. ent. Soc.}, volume = {21}, year = {1971}, month = {1970}, pages = {109-112}, type = {Article}, keywords = {parasite, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR10900037764}, author = {Olson, F. J.} } @article {15628, title = {Field survey, laboratory studies and establishment of Lixophaga sphenophori (Diptera: Tachinidae), a parasite of sugarcane weevil at Ramu}, journal = {Science in New Guinea}, volume = {19}, year = {1993}, month = {September}, pages = {97-103}, type = {Article}, keywords = {Australasian region, Dispersal, Hosts, Insect hosts, Land zones, Means of dispersal, parasite, Rhabdoscelus obscurus, Zoogeography}, isbn = {0310-4303}, url = {://ZOOREC:ZOOR13100051613}, author = {Nagaraja, H. and Kuniata, L. S.} } @article {13013, title = {Rhabdoscelus obscurus (Boisduval) Coleoptera: Dryophthoridae}, journal = {Distribution Maps of Plant Pests}, volume = {280}, year = {2001}, note = {(1st revision)}, month = {December}, pages = {1-3}, type = {Article}, keywords = {Land zones, Oceanic islands, Oriental region, Pacific Ocean islands, plant pest, Rhabdoscelus obscurus}, isbn = {1369-104X}, url = {://ZOOREC:ZOOR13800024679}, author = {CAB International} } @article {11844, title = {CANE WEEVIL BORER RHABDOSCELUS-OBSCURUS COLEOPTERA CURCULIONIDAE A PEST OF PALMS IN NORTHERN QUEENSLAND AUSTRALIA}, journal = {Principes}, volume = {35}, number = {4}, year = {1991}, pages = {199-207}, abstract = {In recent years the cultivation of ornamental palms (Arecaceae) has increased markedly in northern Queensland. Consequently, several insects have become important pests, particularly Rhabdoscelus obscurus (Boisduval), the cane weevil borer. The larvae of this beetle feed on various species of palms, making the plants unsaleable. Death or lodging of the trees may also result. This paper documents its pest status, derived from information in the literature and from consultation with lcoal growers.}, keywords = {Rhabdoscelus obscurus}, isbn = {0032-8480}, author = {Halfpapp, K. H. and Storey, R. I.} } @article {11273, title = {Chemical and behavioral ecology of palm weevils (Curculionidae: Rhynchophorinae)}, journal = {Florida Entomologist}, volume = {79}, number = {2}, year = {1996}, pages = {153-167}, abstract = {Palm weevils in the subfamily Rhynchophorinae (Curculionidae) (Rhynchophorus spp., Dynamis borassi, Metamasius hemipterus, Rhabdoscelus obscurus, and Paramasius distortus) use male-produced aggregation pheromones for intraspecific chemical communication. Pheromones comprise 8, 9, or 10 carbon, methyl-branched, secondary alcohols. (4S,5S)-4-Methyl-5-nonanol (ferrugineol) is the major aggregation pheromone for R. ferrugineus, R. vulneratus, R, bilineatus, M. hemipterus, and D. borassi and a minor component for R. palmarum. (5S,4S)-5-Methyl-4-octanol (cruentol), (3S,4S)-3-methyl-4-octanol (phoenicol), and (4S,2E)-6-methyl-2-hepten-4-ol (rhynchophorol) are the main aggregation pheromones for R. cruentatus, R. phoenicis, and R. palmarum, respectively. Plant kairomones strongly enhance pheromone attractiveness but none of the identified volatiles, such as ethyl acetate, ethyl propionate, or ethyl butyrate are as synergistic as fermenting plant (palm or sugarcane) tissue. Studying orientation behavior of foraging weevils to semiochemical devices helped to design and test traps for weevil capture. Generally, 3 mg per day of synthetic pheromone (with non-natural stereoisomers being benign) plus insecticide-treated plant tissue constitute highly attractive trap baits. Potential exists for pheromone-based mass-trapping of weevils to reduce their populations and the spread of the weevil-vectored red ring disease, for monitoring their population dynamics to facilitate pest management decisions, and for detection and possible interception of non-native weevils at ports of entry.}, keywords = {Dynamis borassi, Metamasius hemipterus, Rhabdoscelus obscurus, Rhynchophorus}, isbn = {0015-4040}, author = {GiblinDavis, R. M. and Oehlschlager, A. C. and Perez, A. and Gries, G. and Gries, R. and Weissling, T. J. and Chinchilla, C. M. and Pena, J. E. and Hallett, R. H. and Pierce, H. D. and Gonzalez, L. M.} } @inbook {10681, title = {Transport and the spread of crop pests in tropical Polynesia}, booktitle = {Commerce and the spread of pests and disease vectors.}, year = {1984}, note = {Book chapter}, pages = {257-272}, publisher = {Praeger, New York, Philadelphia etc.}, organization = {Praeger, New York, Philadelphia etc.}, keywords = {Achatina fulica, Brontispa longissima, Dispersal, Graeffea crouanii, Land zones, Means of dispersal, Oceanic islands, Oryctes rhinoceros, Rhabdoscelus obscurus, Zoogeography}, url = {://ZOOREC:ZOOR12200010670}, author = {Dharmaraju, E.}, editor = {Laird, M.} } @article {9904, title = {Antennal morphology of the New Guinea sugarcane weevil, Rhabdoscelus obscurus}, journal = {Annals ent. Soc. Am.}, volume = {66}, year = {1973}, pages = {117-121}, type = {Article}, keywords = {Appendages, morphology, Rhabdoscelus obscurus, Sensory reception}, url = {://ZOOREC:ZOOR11000005220}, author = {Chang, V. C. S. and Jensen, L.} } @article {9899, title = {Pheromone production by the New Guinea sugarcane weevil}, journal = {Environmental Ent.}, volume = {1}, year = {1972}, pages = {476-481}, type = {Article}, keywords = {Behaviour, Chemical signals, Feeding, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR10900019662}, author = {Chang, V. C. S. and Curtis, G. A.} } @inbook {9030, title = {Distribution maps of pests. Series A}, booktitle = {Distribution maps of pests. Series A.}, year = {1975}, note = {Book}, pages = {280-294}, publisher = {Commonwealth lnstitute of Entomology, London.}, organization = {Commonwealth lnstitute of Entomology, London.}, keywords = {Rhabdoscelus obscurus, Xylosandrus morigerus, Zoogeography}, url = {://ZOOREC:ZOOR11200000049}, author = {Anonymous} } @article {7572, title = {Development of a semiochemical-based trapping method for the New Guinea sugarcane weevil, Rhabdoscelus obscurus in Guam}, journal = {JEN}, volume = {129}, number = {2}, year = {2005}, pages = {65-69}, abstract = {Aggregation pheromone of the Australian population of New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval), in conjunction with other semiochemicals, was used to develop an efficient trapping method for the weevil population in Guam. In a field experiment at Yigo, plastic bucket traps baited with the lure of the Australian R. obscurus population in combination with ethyl acetate and cut sugarcane captured significantly more weevils than traps baited with pheromone + ethyl acetate, pheromone + sugarcane or individual lure components alone. Traps baited with various semiochemical-based lures and treated with insecticide captured significantly greater numbers of weevils than those not treated with insecticide. Traps baited with cut sugarcane caught significantly more weevils than those without sugarcane. Semiochemical-based trapping in weevil management has potential either in mass trapping or as part of an integrated pest management (IPM) programme. Based on the present findings, a future line of work for the control of this weevil is proposed.}, keywords = {Rhabdoscelus obscurus}, author = {Reddy, VG. V. P. and Cruz, Z. T. and BAMBA, J. and MUNIAPPAN, R.} } @article {5644, title = {Rhynchophorinae of southeastern Polynesia (Coleoptera: Curculionidae)}, journal = {Pacif. Insects}, volume = {10}, year = {1968}, pages = {47-77}, type = {Article}, keywords = {Biology, larvae, Nomenclature, Oceanic Islands/antarctica, Rhabdoscelus, Rhabdoscelus obscurus, southwestern Polynesia, Systematics}, url = {http://hbs.bishopmuseum.org/pi/pdf/10(1)-47.pdf}, author = {Zimmerman, E. C.} } @proceedings {5554, title = {A new pest borer on oil palm bunches in Indonesia (Rhabdoscelus obscurus Boisduval, Coleoptera Curculionidae)}, year = {2001}, month = {20/08/2001}, pages = {633-640}, publisher = {MPOB : Kuala Lumpur}, address = {Mutiara Kuala Lumpur, Malaysia}, abstract = {Some large weevils have been reported for a long time on oil palm belonging to the Calandrini such as Rhynchophorus vulneratus (Pz.) and R. bilineatus (Mon.), respectively in West and East Indonesia, but even in association with other feeding pests these two species are without major incidence. Another very small Calandrini, 7-8 mm, is also very common on the fronds cut, attracted by fresh exudates, Diocalandra frumenti (F.). This insect is harmless, the larvae feeding only in the upper part of the tissues of the petiolar leaves, recently pruned. But now two bigger species, 12 and 14 mm, are found very numerous in oil palm plantation along with D. frumenti, Rhaboscelus maculata Gyll. already recorded in Malaysia and Rhabdoscelus obscurus Boisd. These two weevils have never been mentionned in Indonesia and the latter one is able to damage the bunches. R.maculata is living only as D. frumenti in the petiolar bases freshly cut, but R. obscurus can be found also in the living tissues of bunches boring inside the peduncule, the rachis or even the spiklets and the fruits. Damages in Sumatra in the first years of production are very variable according to the vegetal material and the cultural practices. Material with slow growth with often wounds during castration is more affected. The white grubs boring the peduncule before maturation of the fruits can provoke a decay of the upper part of the bunch, similar to a lack of pollination. Inside the rachis, after the feeding of the larvae, a large black longitudinal necrosis occurs reducing the development of the spiklets, and favouring the spread of bacteria in the soft tissues and fruits. The percentage of bunches affected can reached 21.4\% on some crossings, but in average is only 5.1\% on commercial fields, when this weevil is present. On mature palms damages are also present with the feeding cavity inside the rachis causing a frequent fracture of the bunch. The biology of this new pest has been studied, description of the adults and larvae are given. The life cycle is completed in 94 days. Until now Rhabdoscelus obscurus was known in the Pacific Islands, Papua New Guinea and Queensland. In Indonesia this pest has been only recorded in Irian Jaya and Moluccas, mostly on sugar cane, banana, coconuts and wild palms. Now this species has spread to the western part of the archipelago, and is present and well established in Sumatra oil palm plantations. Damages although still limited have to be taken into consideration and monitored. (R{\'e}sum{\'e} d\&$\#$39;auteur)}, keywords = {Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://publications.cirad.fr/une_notice.php?dk=525568}, author = {Desmier De Chenon, R. and Purnomo, R. E. and Sudharto, P. S.} } @article {5449, title = {Rhabdoscelus obscurus. [Distribution map]. (Distribution Maps of Plant Pests, 2001, December (1st revision), Map 280)}, year = {2001}, abstract = {A new distribution map is provided for Rhabdoscelus obscurus (Boisduval) Coleoptera: Dryophthoridae Attacks sugarcane (Saccharum officinarum), coconut (Cocos nucifera), oil palm (Elaeis guineensis) and sago palm (Metroxylon sagu). Information is given on the geographical distribution in ASIA, Christmas Island, Indonesia, Irian Jaya, Maluku, Nusa Tenggara, Sulawesi, Japan, Bonin Islands, Honshu, Malaysia, Sarawak, Taiwan, NORTH AMERICA, USA, Hawaii, OCEANIA, American Samoa, Australia, New South Wales, Queensland, Cook Islands, Fed. States of Micronesia, Fiji, French Polynesia, Guam, Marshall Islands, Nauru, New Caledonia, Niue, Northern Mariana Islands, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Vanuatu.}, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://www.cababstractsplus.org/DMPP/Reviews.asp?action=display\&openMenu=relatedItems\&ReviewID=15405}, author = {CAB International} } @article {5440, title = {New Guinea Sugarcane Weevil (Rhabdoscelus obscurus Boisduval)}, year = {2000}, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://www.ctahr.hawaii.edu/adap/Publications/ADAP_pubs/2000-9.pdf}, author = {Schreiner, I.} } @article {4879, title = {Field Response of Guam Populations of the New Guinea Sugarcane Weevil, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae), to Aggregation Pheromones and Food Volatiles}, journal = {Micronesica}, volume = {37}, number = {1}, year = {2004}, pages = {57-68}, abstract = {Lures of aggregation pheromones of the Australian and Hawaiian populations of New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval), with other semiochemicals were used to clarify the identity of the weevil population in Guam. In a field experiment at eight different locations (Dededo, Tumon, Yigo, Hag{\r a}t{\~n}a, Mangilao, Yona, Agat and Malesso), plastic bucket traps baited with the lure of the Australian R. obscurus population in combination with a food volatile compound (ethyl acetate) and cut sugarcane captured significantly more weevils (total of 348) than traps baited with pheromone lure of the Hawaiian R. obscurus population in combination with food volatile and cut sugarcane which caught a total of 128 weevils. Traps baited with lure containing only the food volatile and cut sugarcane or only cut sugarcane captured significantly fewer weevils (total of 36 and 30, respectively) than those baited with pheromone compounds. Data from trap catches indicate that the Guam population of R. obscurus responded significantly more to the pheromone lure of the Australian population than to pheromone lure of the Hawaiian population indicating that the Guam R. obscurus population is related more closely to the Australian population. Trap catches at the Tumon and Dededo locations were greater than those in Yigo, Yona, Mangilao, Hag{\r a}t{\~n}a, Agat, and Malesso. Rainfall had a low correlation with trap catches at all locations except at Yigo where it positively correlated to the Australian population lure treatment. Semiochemical based trapping in weevil management has potential either in mass trapping or as part of an IPM program. A future line of work is also proposed for the control of weevil borers based on these initial results.}, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://www.wptrc.org/userfiles/file/Micronesica-2004.pdf}, author = {MUNIAPPAN, R. and BAMBA, J. and CRUZ, J. and REDDY, G. V. P.} } @article {4880, title = {Aggregation Pheromones of Two Geographical Isolates of the New Guinea Sugarcane Weevil, Rhabdoscelus obscurus}, journal = {Journal of Chemical Ecology}, volume = {26}, number = {12}, year = {2000}, pages = {2763-2780}, abstract = {The aggregation pheromones were studied from two geographical isolates (Hakalau, Hawaii, and Silkwood, Queensland, Australia) of the New Guinea sugarcane weevil, Rhabdoscelus obscurus. Coupled gas chromatographic-electroantennographic detection (GC-EAD) and GC-mass spectrometric (MS) analyses of Porapak Q volatile extract from male and from female Hawaiian R. obscurus revealed a single EAD-active, male-specific candidate pheromone, which was identified as 2-methyl-4-octanol (1). Corresponding volatile analyses from male and from female Australian R. obscurus consistently revealed three EAD-active, male-specific candidate pheromone components that were identified as 1, (E2)-6-methyl-2-hepten-4-ol (rhynchophorol) (2), and 2-methyl-4-heptanol (3). In field experiment 1 in Hakalau, Hawaii, traps baited with a stereoisomeric mixture of synthetic 1 (3 mg/day) plus sugarcane captured more weevils than did traps baited with 1 or sugarcane alone or no bait, indicating that 1 is the pheromone of the Hawaiian R. obscurus population. In field experiment 2, conducted in Silkwood, Australia, traps baited with stereoisomeric mixtures of synthetic 1, 2, and 3 (3 mg/day each) plus sugarcane caught more weevils than did unbaited traps or traps baited with 1, 2, and 3 or sugarcane. Testing candidate pheromone components 1, 2, and 3 in experiments 2-5 in all possible binary, ternary, and quaternary combinations with sugarcane, indicated that 1 and 2 in combination, but no singly, are pheromone components of the Australian R. obscurus population. Weevils from several locations in Australia and Hawaii could not be differentiated using traditional morphological characters or ultrastructural comparisons with scanning electron microscopy (SEM). However, comparisons of mtDNA sequences (cytochrome oxidase I; regions I1 to M4; 201 base pairs) revealed 5.5\% variation between the Hawaiian (N = 2) and the Australian (N = 4) samples. There was no intrapopulation variation in sequence data from the weevils from Hawaii versus Australia, suggesting that they are sibling species.
}, keywords = {Rhabdoscelus obscurus}, url = {http://www.springerlink.com/content/q7r8j3v10m001777/}, author = {Giblin-Davis, R. M. and Gries, B. and Robertson, L. N. and Hara, A. H. and Gries, G. and Charles W. O{\textquoteright}Brien and Pierce, H. D.} } @article {2698, title = {Antennal morphology of New Guinea Sugarcane Weevil, Rhabdoscelus obscurus Coleoptera-Curculionidae}, journal = {Annals of the Entomological Society of America}, volume = {66}, number = {1}, year = {1973}, note = {Times Cited: 2}, pages = {117-121}, isbn = {0013-8746}, author = {Chang, V. C. S. and Jensen, L.} } @article {1917, title = {Development of a semiochemical-based trapping method for the New Guinea sugarcane weevil, Rhabdoscelus obscurus in Guam}, journal = {JEN}, volume = {129}, year = {2005}, pages = {65-69}, chapter = {65}, abstract = {Aggregation pheromone of the Australian population of New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval), in conjunction with other semiochemicals, was used to develop an efficient trapping method for the weevil population in Guam. In a field experiment at Yigo, plastic bucket traps baited with the lure of the Australian R. obscurus population in combination with ethyl acetate and cut sugarcane captured significantly more weevils than traps baited with pheromone + ethyl acetate, pheromone + sugarcane or individual lure components alone. Traps baited with various semiochemical-based lures and treated with insecticide captured significantly greater numbers of weevils than those not treated with insecticide. Traps baited with cut sugarcane caught significantly more weevils than those without sugarcane. Semiochemical-based trapping in weevil management has potential either in mass trapping or as part of an integrated pest management (IPM) programme. Based on the present findings, a future line of work for the control of this weevil is proposed. }, keywords = {Rhabdoscelus obscurus}, doi = {10.1111/j.1439-0418.2005.00935.65{\textendash}69}, author = {Reddy, VG. V. P. and Cruz, Z. T. and BAMBA, J. and MUNIAPPAN, R.} } @inbook {1887, title = {Distribution maps of pests. Series A}, booktitle = {Distribution maps of pests. Series A.}, year = {1975}, note = {Book }, pages = {280-294}, publisher = {Commonwealth lnstitute of Entomology, London.}, organization = {Commonwealth lnstitute of Entomology, London.}, keywords = {Rhabdoscelus obscurus, Xylosandrus morigerus, Zoogeography}, url = {://ZOOREC:ZOOR11200000049}, author = {Anonymous} } @article {1888, title = {Pheromone production by the New Guinea sugarcane weevil}, journal = {Environmental Ent.}, volume = {1}, number = {4}, year = {1972}, pages = {476-481}, type = {Article}, keywords = {Behaviour, Chemical signals, Feeding, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR10900019662}, author = {Chang, V. C. S. and Curtis, G. A.} } @article {1889, title = {Antennal morphology of the New Guinea sugarcane weevil, Rhabdoscelus obscurus}, journal = {Annals ent. Soc. Am.}, volume = {66}, number = {1}, year = {1973}, pages = {117-121}, type = {Article}, keywords = {Appendages, morphology, Rhabdoscelus obscurus, Sensory reception}, url = {://ZOOREC:ZOOR11000005220}, author = {Chang, V. C. S. and Jensen, L.} } @inbook {1890, title = {Transport and the spread of crop pests in tropical Polynesia}, booktitle = {Commerce and the spread of pests and disease vectors.}, year = {1984}, note = {Book chapter }, pages = {257-272}, publisher = {Praeger, New York, Philadelphia etc.}, organization = {Praeger, New York, Philadelphia etc.}, keywords = {Achatina fulica, Brontispa longissima, Dispersal, Graeffea crouanii, Land zones, Means of dispersal, Oceanic islands, Oryctes rhinoceros, Rhabdoscelus obscurus, Zoogeography}, url = {://ZOOREC:ZOOR12200010670}, author = {Dharmaraju, E.}, editor = {Laird, M.} } @article {1896, title = {Adult feeding behaviour of Lixophaga spenophori, a tachinid parasite of the New Guinea sugarcane weevil}, journal = {Proceedings Hawaii. ent. Soc.}, volume = {21}, number = {3}, year = {1974}, pages = {403-412}, type = {Article}, keywords = {Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR11100035903}, author = {Leeper, J. R.} } @article {1902, title = {Field survey, laboratory studies and establishment of Lixophaga sphenophori (Diptera: Tachinidae), a parasite of sugarcane weevil at Ramu}, journal = {Science in New Guinea}, volume = {19}, number = {2}, year = {1993}, month = {September}, pages = {97-103}, type = {Article}, keywords = {Australasian region, Dispersal, Hosts, Insect hosts, Land zones, Means of dispersal, parasite, Rhabdoscelus obscurus, Zoogeography}, isbn = {0310-4303}, url = {://ZOOREC:ZOOR13100051613}, author = {Nagaraja, H. and Kuniata, L. S.} } @article {1904, title = {Pathologies of the New Guinea sugarcane weevil grub. Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae), caused by the {\textquoteright}parasitoid{\textquoteright} cane weevil tachinid, Lixophaga sphenophori (Villeneuve) (Diptera: Tachinidae)}, journal = {Proc. Hawaii ent. Soc.}, volume = {20}, year = {1969}, pages = {579-581.}, type = {Article}, keywords = {Biology, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR10700043200}, author = {Olson, F. J.} } @article {1905, title = {Mode of entry by the {\textquoteright}parasitoid{\textquoteright} maggot of the cane weevil tachinid, Lixophaga sphenophori (Villeneure) (Diptera: Tacinidae) into the New Guinea sugarcane weevil larva, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae)}, journal = {Proceedings Hawaii. ent. Soc.}, volume = {21}, year = {1971}, month = {1970}, pages = {109-112}, type = {Article}, keywords = {parasite, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR10900037764}, author = {Olson, F. J.} } @article {1907, title = {Distribution and sampling of adults of Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae) and their damage in sugarcane}, journal = {Australian Journal of Entomology}, volume = {40}, number = {3}, year = {2001}, month = {13}, pages = {281-285}, type = {Article}, keywords = {Ecological techniques, Ecology, Habitat, Hosts, Land zones, parasite, Rhabdoscelus obscurus, Techniques}, isbn = {1326-6756}, url = {://ZOOREC:ZOOR13700066724}, author = {Sallam, Mohamed N. and Garrad, Steven W.} } @article {1908, title = {Pheromone trapping of the sugarcane weevil borer, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae): an evaluation of trap design and placement in the field}, journal = {Australian Journal of Entomology}, volume = {46}, number = {3}, year = {2007}, month = {17}, pages = {217-223}, type = {Article}, abstract = {The sugarcane weevil borer (Rhabdoscelus obscurus) is a pest of sugarcane and palm plantations in high rainfall areas of far north Queensland. Pheromone mass trapping of adult borers is an effective method of monitoring and may also impact on their population densities. Trials to evaluate different designs of pheromone trap showed the \&$\#$39;water trap\&$\#$39; to be the most effective in capturing the highest number of adult borers. The water trap is a 20 cm-diameter pot with a plastic bag inserted to hold water with pheromone lures and cane pieces held together in a plastic container suspended over the water from a square of wire mesh. Results also showed that adult borers in adjacent fields are able to sense the lures and migrate into treated fields. The sex ratio of captured borers in split-cane traps (which is a standard population monitoring tool) was male biased from February to April but was more balanced later in the year. However, the pheromone traps mainly attracted female borers all year round, except during May. Thus, we recommend pheromone traps to be deployed early in the season (November to early December) to attract the maximum number of adult females at a critical time for the population as it starts to build up. In addition, placing pheromone traps inside cane paddocks did not improve the total catch in most cases. Therefore, placing pheromone traps under the shade of trees outside the paddock or at the edge of the paddock under sugarcane can be a feasible mass trapping method that can easily be implemented by cane growers. }, keywords = {Australasian region, Collecting techniques, Ecology, Habitat, Hosts, Land zones, parasite, Population dynamics, Population structure, Rhabdoscelus obscurus, Techniques}, isbn = {1326-6756}, url = {://ZOOREC:ZOOR14310066353}, author = {Sallam, Mohamed N. and Peck, Darren R. and McAvoy, Catherine A. and Donald, David A.} } @article {1910, title = {Biological studies on two sibling species of Lixophaga (Diptera: Tachinidae), parasites of the New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval)}, journal = {Proceedings Hawaii. ent. Soc.}, volume = {21}, number = {3}, year = {1974}, pages = {485-494}, type = {Article}, keywords = {Genetics, parasite, Rhabdoscelus obscurus}, url = {://ZOOREC:ZOOR11100035917}, author = {Waggy, S. L. and Beardsley, J. W. , Jr.} } @article {1915, title = {Rhynchophorinae of southeastern Polynesia (Coleoptera: Curculionidae)}, journal = {Pacif. Insects}, volume = {10}, year = {1968}, pages = {47-77}, type = {Article}, keywords = {Biology, larvae, Nomenclature, Oceanic Islands/antarctica, Rhabdoscelus, Rhabdoscelus obscurus, southwestern Polynesia, Systematics}, url = {http://hbs.bishopmuseum.org/pi/pdf/10(1)-47.pdf}, author = {Zimmerman, E. C.} } @proceedings {1886, title = {A new pest borer on oil palm bunches in Indonesia (Rhabdoscelus obscurus Boisduval, Coleoptera Curculionidae)}, year = {2001}, month = {20/08/2001}, pages = {633-640}, publisher = {MPOB : Kuala Lumpur,}, address = {Mutiara Kuala Lumpur, Malaysia}, abstract = {Some large weevils have been reported for a long time on oil palm belonging to the Calandrini such as Rhynchophorus vulneratus (Pz.) and R. bilineatus (Mon.), respectively in West and East Indonesia, but even in association with other feeding pests these two species are without major incidence. Another very small Calandrini, 7-8 mm, is also very common on the fronds cut, attracted by fresh exudates, Diocalandra frumenti (F.). This insect is harmless, the larvae feeding only in the upper part of the tissues of the petiolar leaves, recently pruned. But now two bigger species, 12 and 14 mm, are found very numerous in oil palm plantation along with D. frumenti, Rhaboscelus maculata Gyll. already recorded in Malaysia and Rhabdoscelus obscurus Boisd. These two weevils have never been mentionned in Indonesia and the latter one is able to damage the bunches. R.maculata is living only as D. frumenti in the petiolar bases freshly cut, but R. obscurus can be found also in the living tissues of bunches boring inside the peduncule, the rachis or even the spiklets and the fruits. Damages in Sumatra in the first years of production are very variable according to the vegetal material and the cultural practices. Material with slow growth with often wounds during castration is more affected. The white grubs boring the peduncule before maturation of the fruits can provoke a decay of the upper part of the bunch, similar to a lack of pollination. Inside the rachis, after the feeding of the larvae, a large black longitudinal necrosis occurs reducing the development of the spiklets, and favouring the spread of bacteria in the soft tissues and fruits. The percentage of bunches affected can reached 21.4\% on some crossings, but in average is only 5.1\% on commercial fields, when this weevil is present. On mature palms damages are also present with the feeding cavity inside the rachis causing a frequent fracture of the bunch. The biology of this new pest has been studied, description of the adults and larvae are given. The life cycle is completed in 94 days. Until now Rhabdoscelus obscurus was known in the Pacific Islands, Papua New Guinea and Queensland. In Indonesia this pest has been only recorded in Irian Jaya and Moluccas, mostly on sugar cane, banana, coconuts and wild palms. Now this species has spread to the western part of the archipelago, and is present and well established in Sumatra oil palm plantations. Damages although still limited have to be taken into consideration and monitored. (R{\'e}sum{\'e} d\&$\#$39;auteur) }, keywords = {Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://publications.cirad.fr/une_notice.php?dk=525568}, author = {Desmier De Chenon, R. and Purnomo, R. E. and Sudharto, P. S.} } @article {1884, title = {Rhabdoscelus obscurus. [Distribution map]. (Distribution Maps of Plant Pests, 2001, December (1st revision), Map 280)}, year = {2001}, abstract = {A new distribution map is provided for Rhabdoscelus obscurus (Boisduval) Coleoptera: Dryophthoridae Attacks sugarcane (Saccharum officinarum), coconut (Cocos nucifera), oil palm (Elaeis guineensis) and sago palm (Metroxylon sagu). Information is given on the geographical distribution in ASIA, Christmas Island, Indonesia, Irian Jaya, Maluku, Nusa Tenggara, Sulawesi, Japan, Bonin Islands, Honshu, Malaysia, Sarawak, Taiwan, NORTH AMERICA, USA, Hawaii, OCEANIA, American Samoa, Australia, New South Wales, Queensland, Cook Islands, Fed. States of Micronesia, Fiji, French Polynesia, Guam, Marshall Islands, Nauru, New Caledonia, Niue, Northern Mariana Islands, Palau, Papua New Guinea, Samoa, Solomon Islands, Tonga, Vanuatu. }, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://www.cababstractsplus.org/DMPP/Reviews.asp?action=display\&openMenu=relatedItems\&ReviewID=15405}, author = {CAB International} } @article {1883, title = {Cane weevil borer, Rhabdoscelus obscurus (Coleoptera:Curculionidae), a pest of palms in northern Queensland, Australia.}, journal = {PRINCIPES}, volume = {35}, year = {1991}, pages = {199-207}, chapter = {199}, abstract = {

In recent years the cultivation of ornamental palms (Arecaceae) has increased markedly in northern Queensland. Consequently, several insects have become important pests, particularly Rhabdoscelus obscurus (Boisduval), the cane weevil borer. The larvae of this beetle feed on various species of palms, making the plants unsaleable. Death or lodging of the trees may also result. This paper documents its pest status, derived from information in the literature and from consultation with lcoal growers.

}, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://era.dpi.qld.gov.au/521/}, author = {Halfpapp, K. H. and Storey, R. I.} } @article {1882, title = {Aggregation Pheromones of Two Geographical Isolates of the New Guinea Sugarcane Weevil, Rhabdoscelus obscurus }, journal = {Journal of Chemical Ecology}, volume = {26}, year = {2000}, pages = {2763-2780}, chapter = {2763}, abstract = {The aggregation pheromones were studied from two geographical isolates (Hakalau, Hawaii, and Silkwood, Queensland, Australia) of the New Guinea sugarcane weevil, Rhabdoscelus obscurus. Coupled gas chromatographic-electroantennographic detection (GC-EAD) and GC-mass spectrometric (MS) analyses of Porapak Q volatile extract from male and from female Hawaiian R. obscurus revealed a single EAD-active, male-specific candidate pheromone, which was identified as 2-methyl-4-octanol (1). Corresponding volatile analyses from male and from female Australian R. obscurus consistently revealed three EAD-active, male-specific candidate pheromone components that were identified as 1, (E2)-6-methyl-2-hepten-4-ol (rhynchophorol) (2), and 2-methyl-4-heptanol (3). In field experiment 1 in Hakalau, Hawaii, traps baited with a stereoisomeric mixture of synthetic 1 (3 mg/day) plus sugarcane captured more weevils than did traps baited with 1 or sugarcane alone or no bait, indicating that 1 is the pheromone of the Hawaiian R. obscurus population. In field experiment 2, conducted in Silkwood, Australia, traps baited with stereoisomeric mixtures of synthetic 1, 2, and 3 (3 mg/day each) plus sugarcane caught more weevils than did unbaited traps or traps baited with 1, 2, and 3 or sugarcane. Testing candidate pheromone components 1, 2, and 3 in experiments 2-5 in all possible binary, ternary, and quaternary combinations with sugarcane, indicated that 1 and 2 in combination, but no singly, are pheromone components of the Australian R. obscurus population. Weevils from several locations in Australia and Hawaii could not be differentiated using traditional morphological characters or ultrastructural comparisons with scanning electron microscopy (SEM). However, comparisons of mtDNA sequences (cytochrome oxidase I; regions I1 to M4; 201 base pairs) revealed 5.5\% variation between the Hawaiian (N = 2) and the Australian (N = 4) samples. There was no intrapopulation variation in sequence data from the weevils from Hawaii versus Australia, suggesting that they are sibling species.
}, keywords = {Rhabdoscelus obscurus}, issn = {0098-0331 }, doi = {10.1023/A:1026437809875}, url = {http://www.springerlink.com/content/q7r8j3v10m001777/}, author = {Giblin-Davis, R. M. and Gries, B. and Robertson, L. N. and Hara, A. H. and Gries, G. and Charles W. O{\textquoteright}Brien and Pierce, H. D.} } @article {1881, title = {New Guinea Sugarcane Weevil (Rhabdoscelus obscurus Boisduval)}, year = {2000}, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://www.ctahr.hawaii.edu/adap/Publications/ADAP_pubs/2000-9.pdf}, author = {Schreiner, I.} } @article {1880, title = {Field Response of Guam Populations of the New Guinea Sugarcane Weevil, Rhabdoscelus obscurus (Boisduval) (Coleoptera: Curculionidae), to Aggregation Pheromones and Food Volatiles}, journal = {Micronesica}, volume = {37}, year = {2004}, pages = {57-68}, chapter = {57}, abstract = { Lures of aggregation pheromones of the Australian and Hawaiian populations of New Guinea sugarcane weevil, Rhabdoscelus obscurus (Boisduval), with other semiochemicals were used to clarify the identity of the weevil population in Guam. In a field experiment at eight different locations (Dededo, Tumon, Yigo, Hag{\r a}t{\~n}a, Mangilao, Yona, Agat and Malesso), plastic bucket traps baited with the lure of the Australian R. obscurus population in combination with a food volatile compound (ethyl acetate) and cut sugarcane captured significantly more weevils (total of 348) than traps baited with pheromone lure of the Hawaiian R. obscurus population in combination with food volatile and cut sugarcane which caught a total of 128 weevils. Traps baited with lure containing only the food volatile and cut sugarcane or only cut sugarcane captured significantly fewer weevils (total of 36 and 30, respectively) than those baited with pheromone compounds. Data from trap catches indicate that the Guam population of R. obscurus responded significantly more to the pheromone lure of the Australian population than to pheromone lure of the Hawaiian population indicating that the Guam R. obscurus population is related more closely to the Australian population. Trap catches at the Tumon and Dededo locations were greater than those in Yigo, Yona, Mangilao, Hag{\r a}t{\~n}a, Agat, and Malesso. Rainfall had a low correlation with trap catches at all locations except at Yigo where it positively correlated to the Australian population lure treatment. Semiochemical based trapping in weevil management has potential either in mass trapping or as part of an IPM program. A future line of work is also proposed for the control of weevil borers based on these initial results. }, keywords = {Dryophthoridae, Rhabdoscelus, Rhabdoscelus obscurus}, url = {http://www.wptrc.org/userfiles/file/Micronesica-2004.pdf}, author = {MUNIAPPAN, R. and BAMBA, J. and CRUZ, J. and REDDY, G. V. P.} }