Levipalatum texanum n. gen., n. sp. (Nematoda: Diplogastridae), an androdioecious species from the south-eastern USA

摘要: Summary – A new species of diplogastrid nematode, Levipalatum texanum n. gen., sp., was isolated from scarab beetles (Coleoptera: Scarabaeidae) in Texas and baited soil Virginia, USA. gen. is circumscribed by stomatal pharyngeal morphology, namely a long, hooked dorsal tooth connected to ‘palate’ projecting anteriad mediad, subventral telostegostomatal ridges denticles, the radius pharynx bulging anteriad. The males are distinguished most other Diplogastridae frequent presence ten pairs genital papillae. Phylogenetic relationships inferred 11 ribosomal protein-coding genes fragment small subunit rRNA gene strongly support L. sp. be sister group Rhabditolaimus, which lacks all stegostomatal characters diagnosing genus. expands comparative studies radiation feeding morphology that anchored on model organism Pristionchus pacificus .T he phylogenetic position indicates case convergent evolution hermaphroditism Diplogastridae.