title: Elhamma Walker (Lepidoptera: Hepialidae) revisited: adult morphology, assessment of recently proposed synonyms and descriptions of two species.
abstract: I revise the Australian-New Guinean ghost moth genus Elhamma. Two recent synonymies are assessed, and two new species from New Guinea, E. grehani sp. nov. and E. viettei sp. nov. are described. I provide an updated diagnosis for the genus and conclude that the presence of only 2 M-veins in the hind wing in both sexes (when females are known) and a strongly cup-shape juxta in the male genitalia are unique diagnostic characters among Hepialidae. I give a detailed description of the adult morphology based on male E. australasiae, and provide a key to all known species based on adult male characters.
authors.affiliation: Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, United Kingdom; Email: t.simonsen@nathist.dk.
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Simonsen
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D001315:Australia; D049628:Body Size; D005260:Female; D008297:Male; D009036:Moths / Q000033:anatomy & histology* / Q000145:classification* / Q000254:growth & development; D009929:Organ Size