Paraiotonchium muscadomesticae n. sp. (Tylenchida: lotonchiidae) a Parasite of the House Fly (Musca domestica) in Brazil and a Key to Species of the Genus Paraiotonchium
AbstractParaiotonchium muscadomesticae n. sp., a parasite of the house fly, Musca domestica L., is described and illustrated from material collected in Brazil. The life cycle of P. muscadomesticae is similar to that of P. autumnale (Nickle), consisting of alternating gamogenetic and parthenogenetic generations. Paraiotonchium muscadomesticae n. sp. can be distinguished from P. nicholasi Slobodyanyuk, P. autumnale (Nickle) Slobodyanyuk, and P. crassirostris (Yatham & Rao) Siddiqi by the shorter body length of young heterosexual females, 652 g.m (530-709) for P. muscadomesticae compared to 750 [mu]m or more (801-1,050) for the others. Paraiotonchium muscadomesticae is close to P. nicholosi but differs from it by V ratio and spicule length (V = 80-84; spicule = 16-21 p.m in P. muscadomesticae compared to V = 73-78; spicule = 25-35 [mu]m in P. nicholasi). Paraiotonchium muscadomesticae and P. nicholasi differ from all species of this genus by the absence of a bursa on males of these two species. Key words: biological control, Brazil, Diptera: Muscidae, entomogenous nematode, life cycle, light microscopy, morphology, Musca domestica, nematode, Paraiotonchium muscadomesticae, parasite, scanning electron microscopy, taxonomy, Tylenchida: lotonchiidae.
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