01663nas a2200181   4500008004100000020001400041245007300055210006900128260000900197300001200206490000700218520106900225653002101294100002401315700002101339700002401360856009701384       2009                        eng d  a1388-554500aPhoretic dispersal of entomopathogenic nematodes by Hylobius abietis0 aPhoretic dispersal of entomopathogenic nematodes by Hylobius abi  c2009  a419-4270 v113 aPhoresis is a strategy in which one organism (the phoretic) attaches to another (the host) for the implied purpose of dispersal and is valuable for small flightless invertebrates with limited mobility. Previous work has shown that the relatively immobile larvae of Hylobius abietis (the large pine weevil) are highly susceptible to entomopathogenic nematodes (EPN) and support nematode reproduction whereas adults do not. Here, we demonstrate that the infective juveniles (IJ) of two species of EPN, Heterorhabditis megidis and Steinernema carpocapsae, can use the resistant but highly mobile adults of H. abietis for phoretic dispersal. The ability to use adult H. abietis for phoresis depended on nematode species and habitat (sand vs peat) and there was no evidence of sex-biased dispersal in S. carpocapsae for which the IJ are dioecious. We hypothesise that phoretic dispersal may be a significant mechanism to avoid sibling competition and inbreeding in EPN, which produce tens of thousands of offspring at point sources in a relatively impenetrable habitat.10aHylobius abietis1 aKruitbos, Laura, M.1 aHeritage, Stuart1 aWilson, Michael, J.  uhttps://weevil.myspecies.info/phoretic-dispersal-entomopathogenic-nematodes-hylobius-abietis01953nas a2200205   4500008004100000020001400041245018800055210006900243260000900312300001200321490000700333520113800340653002901478100002101507700002801528700001801556700001501574700002401589856013401613       2009                        eng d  a1388-554500aAcrostichus rhynchophori n. sp. (Rhabditida: Diplogastridae): a phoretic associate of Rhynchophorus cruentatus Fabricius and R. palmarum L. (Coleoptera: Curculionidae) in the Americas0 aAcrostichus rhynchophori n sp Rhabditida Diplogastridae a phoret  c2009  a669-6880 v113 aAcrostichus dauer larvae (JIII) were recovered during dissections of the palmetto weevil, Rhynchophorus cruentatus, from southern Florida, and the palm weevil, R. palmarum, from Colombia, Costa Rica and Trinidad. Based upon morphological and molecular studies, the four isolates are conspecific and are described herein as A. rhynchophori n. sp. Acrostichus rhynchophori n. sp. is characterised by narrow, flap-like dorsal tooth, female gonads not reflexed to the level of the vulva, male spicule and gubernaculum morphology, i.e., spicule with small and indistinct manubrium embedded in lamina/calomus complex, strong expansion just posterior to manubrium and smoothly curved and smoothly tapered lamina/calomus complex, and gubernaculum with claw-like anterior end in lateral view and three distal branches in ventral view. The new species is distinguished from A. superbus by morphology of the spicule and gubernaculum. Type specimens of four other Acrostichus species, originally described from bark beetles from North America, i.e., A. concolor, A. gubernatus, A. ponderosus and A. taedus, were re-examined and photo-documented.10aRhynchophorus cruentatus1 aKanzaki, Natsumi1 aGiblin-Davis, Robin, M.1 aZeng, Yongsan1 aYe, Weimin1 aCenter, Barbara, J.  uhttps://weevil.myspecies.info/acrostichus-rhynchophori-n-sp-rhabditida-diplogastridae-phoretic-associate-rhynchophorus-cruentatus