Griseosphinx preechari
Superficially similar to Pseudodolbina fo fo but immediately distinguishable by the presence of the field of microtrichia on the inner surface of the labial palp segment 1 and the choerocampine pilifer-palp hearing organ.
Forewing length: male: 24-30 mm; female: 25-20 mm. Antennae slightly clubbed, long, exceeding apex of forewing cell. Scales of head and body narrow, semi-erect, giving a hairy appearance. Labial palp segment 1 with apical cavity well defined. Base of proboscis exposed (as in Rhagastis, Cechetra and Cechenena). Outer apical hindtibial spur approximately half as long as hindbasitarsus and about twice as long as inner apical hindtibial spur. Hindwing upperside uniform brownish-grey.
Male genitalia: Uncus simple, apically truncate. Gnathos simple, apically slightly spatulate and rounded, with a small median dorsal point when viewed apically. Juxta cordate. Valves oval, with 16-18 stridulatory scales arranged in four irregular rows.Basal valve apodeme triangular, dorsally produced as two acutely pointed processes. Harpe sickle-shaped, dorsal edge concave, ventral edge convex, apex rounded in ventral view. Phallus with apical bilobed process; left lobe projecting ventrally, short, apically dentate; right lobe lying dorsally, broad, anterior margin dentate, surface with a number of small spines. Vesica linear, membranous, with a short sac distally on the left side, and a longer sac on the right, both projecting laterally and slightly dorsally; area around these sacs with lightly sclerotized granules.