@article {9950,
	title = {Host location behaviour by two Cephalonomia spp. (Hymenoptera: Bethylidae) wasps associated with the coffee berry borer Hypothenemus hampei (Coleoptera: Curculionidae: Scolytinae)},
	journal = {International Journal of Tropical Insect Science},
	volume = {28},
	number = {4},
	year = {2008},
	month = {December},
	pages = {179-184},
	type = {Article},
	abstract = {The host location behaviour of two closely related bethylid parasitoids was investigated under laboratory conditions. Although both species of parasitoid attack the coffee berry borer (CBB) Hypothenemus hampei Ferrari, they differ in their diet breadth. In Y-tube olfactometer bioassays, we investigated the behavioural responses of Cephalonomia stephanoderis (Betrem), a parasitoid with a narrower diet breadth, and Cephalonomia hyalinipennis (Ashmead), a parasitoid with a wider diet breadth, to the coffee-CBB complex volatiles. The results revealed that the responses differed for the two species. In single- and dual-choice tests, C. stephanoderis was attracted to volatiles emitted by CBB-infested coffee berries, dust/frass and CBB immature stages, whereas C. hyalinipennis was not attracted to any cues from plant-host complex offered.},
	keywords = {Hypothenemus hampei},
	isbn = {1742-7584},
	author = {Chiu-Alvarado, Pilar and Rojas, Julio C.}
}
@article {9951,
	title = {Behavioural responses of bethylid parasitoid species of the coffee Berry borer to chemicals cues from host and non-host dust/frass},
	journal = {BioControl (Dordrecht)},
	volume = {56},
	number = {1},
	year = {2011},
	month = {Feb},
	pages = {45-53},
	abstract = {The bethylid wasps Cephalonomia stephanoderis Betrem and Prorops nasuta Waterston are parasitoids of the coffee berry borer, Hypothenemus hampei (Ferrari), the most serious insect pest of coffee worldwide. Recent studies on the host location behaviour of these parasitoids have shown that females are attracted to volatile compounds released by immature stages and dust/frass of H. hampei. Also, these studies have reported that the locomotory behaviour of parasitoids is influenced by contact chemical cues from host dust/frass. In this study, we investigated the responses of females of both species to volatiles and contact cues from dust/frass from different sources. Volatiles from dust/frass from H. hampei-infested coffee and maize infested with Sitophilus sp were attractive to P. nasuta females. In contrast, C. stephanoderis females were only attracted to the volatiles from dust/frass from H. hampei-infested coffee. Volatiles from an artificial diet used for rearing H. hampei were not attractive to females of both species. The effect of methanolic extracts from dust/frass from different sources on the patch-searching time of parasitoids was analysed using the Ethovision software. P. nasuta females spent more time in the patches treated with extracts of dust/frass from H. hampei-infested berries, artificial diet, and from maize infested with Sitophilus sp than on patches treated with dry coffee extract or solvent control. C. stephanoderis females spent more time on patches treated with dust/frass extracts from H. hampei-infested berries and artificial diet than on patches treated with an extract of dust/frass from maize infested with Sitophilus sp, an extract of dry coffee, and methanol control.},
	keywords = {Hypothenemus hampei},
	isbn = {1386-6141},
	author = {Chiu-Alvarado, Pilar and Rojas, Julio C.}
}
@article {9949,
	title = {Attraction of Prorops nasuta (Hymenoptera: Bethylidae), a parasitoid of the coffee berry borer (Coleoptera: Curculionidae), to host-associated olfactory cues},
	journal = {Annals of the Entomological Society of America},
	volume = {102},
	number = {1},
	year = {2009},
	month = {January},
	pages = {166-171},
	abstract = {The parasitoid Prorops nasuta Waterston (Hymenoptera: Bethylidae) is a wasp of the coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera: Curculionidae). In this study, the attractiveness of different volatiles to P. nasuta was studied in the laboratory using a Y-tube olfactometer. Female wasps were attracted to coffee berry borer-infested coffee berries but not to uninfested or artificially damaged berries. Full-grown larvae and pupae, and dust/frass of H. hampei isolated from infested berries, were attractive to parasitoid females, whereas immature coffee berry borer and dust/frass originating from coffee berry borer reared on an artificial diet were not. Adult coffee berry borer, derived from both infested berries or artificial diet, were not attractive to parasitoids. Females of P. nasuta did not show a preference for volatiles released from unparasitized versus parasitized hosts independent of the time since parasitization. Wasp attraction was influenced by the amount and age of dust/frass but not by the density of immature larvae. These findings show that host searching behavior of P. nasuta is mediated by chemical cues emitted from the coffee berry-H. hampei complex.},
	keywords = {Hypothenemus hampei},
	isbn = {0013-8746},
	author = {Chiu-Alvarado, Pilar and Barrera, Juan F. and Rojas, Julio C.}
}
