Hellyethira khukri sp. nov.

Figures 12, 13

Diagnosis. This species is closely similar to the northern Australian species Hellyethira forficata Wells, H. radonensis Wells, and H. veruta Wells, but is recognised by the tightly twisted apical spine on the phallic apparatus; the stout, sclerotised, undivided dorsal lobe on the gonopods compared with the more slender structures in H. radonensis, and the apically divided structures in H. forficata .

Description. Male. Length of each forewing 2.1 mm (n = 2). Antennae each with 33–34 flagellomeres, flagellomeres rectangular in profile, bearing large sensilla placodea. Meso-ventral process on abdominal segment VII slender, elongate. Genitalia as in Figs 11, 12. Abdominal segment IX quadrate in ventral view; dorsal plate broad, membranous, fimbriate apically; gonopods multilobed, ventralmost lobe broad throughout length, setose, dorsal process in form of pair of stout, sclerotised forceps-like lobes, with pair of slender membranous lobes farther above them, each bearing slender apical seta; parameres curved, convergent in ventral view almost to slightly hooked apices, basally each with stout parallel apodeme; phallic apparatus terminating in a tightly twisted spine, membranous collar subapically.

Female. Unknown.

Types. Holotype. male, NORTHERN TERRITORY, Petherick’s Rainforest Reserve, 6–7.vi.2015, J. Schult, light trap (NTM).

Paratype. 1 male, data as for holotype (ANIC).

Etymology. " Khukri," the term for a Gurkha knife, being descriptive of the blade-like twist terminally on the phallic apparatus.