Abstract
Species of criconematids formerly in the genus Pateracephalenema are transferred to the genus Ogma. Four new species and two new subspecies of Australian Ogma are described. Ogma feckneri n. sp. is distinguished from other described species by the long bare tail. O. sassafras n. sp. differs from related species by the longer stylet, larger number of body annules, more posterior excretory pore and higher number of annules from vulva to tail terminus. O. haguei n. sp. diifers from related species in tail shape, stylet length, number of body annules and position of vulva. O. bellum n. sp. is distinguished by the widely expanded lip region, greater number of scales per annule, and fewer body annules. O. civellae whianus n. ssp. may be distinguished by the single lip annule, and the very long stylet. O. civellae arboreum n. ssp. is characterised by the deeply fringed first annule, and the higher number of scales per annule. Further information is given about O. alticolum and O. australe. As a result of the transfer of Pateracephalanema australe to Ogma, 0. australis Andrassy becomes a junior homonym of O. australe Colbran and is therefore renamed O. andrassyi n.n. A checklist of species recorded in Australia is provided.
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