54 
MICROLEPIDOPTERA OF NEW GUINEA 
Rhomboceros pulverulenta spec. nov. (figs. 2(59, 280) 
13.5 mm. Head dark fuscous-grey, a large vertical triangular, antero- 
posteriorly flattened crest on vertex, face slightly concave, white, a short 
projecting fuscous tuft below. Palpus rather long, slender, median segment 
tolerably smooth except at apex, terminal segment over x / 3 , somewhat 
obtuse: dark fuscous, upper edge of median segment and tip of terminal 
segment whitish -ochreous. Antenna short-ciliate, basal part (about 
i/ g _i/ 9 ) compressed antero-posteriorly, and moderately dilated, pale 
ochreous-grevish, ringed with blackish. Thorax dark fuscous. Abdomen 
dark grey, anal tuft paler, ochreous-grey. Legs rather dark-fuscous, tibiae 
light-ringed. Fore wing without costal fold, elongate-ovate, costa curved 
anteriorly, almost straight posteriorly, apex subobtuse, terrnen slightly 
concave above, gradually rounded beneath, dorsum little rounded. Pale 
ochreous-whitish, anterior 2 / 3 densely transversely strigulated and marbled 
with lilac-grey, posterior third marbled with light lilac and ferruginous- 
brown, markings dark brown. Basal area narrow, dark brown, edge straight , 
vertical, on dorsum forming a moderate, thick tuft of raised scales, dark 
brown on base, whitish-ochreous posteriorly; costa at and beyond 1 / i 
with a pair of rather broad suffused lilac-grey transverse short bands, more 
conspicuous and darker than marbling elsewhere; costal patch large, 
erect-triangular, from much before middle to before apex, grey-lilac, on 
costa with three subtriangular patches: first and second larger, first patch 
grey -lilac, other patches fulvous-brown, edged with dark brown; second 
patch darkest, connected with a rhomboidal dark brown spot on top of 
costal patch, which almost touches a dark brown irregular mark below 
middle of wing on end of cell: two transverse dark brown blotches on 
costa before apex; three similar slightly oblique blotches originating from 
lower half of terrnen, with acute base, lower one longest, to above middle 
of wing; an irregular ill-defined transverse series of dark brown markings 
from tornus, running halfway across wing. Cilia light fulvous, barred with 
pale ochreous, a basal series of fuscous blotches; cilia in apex whitish; 
cilia along costa rather bright ochreous, and blotched with dark brown 
opposite costal dots. Hind wing evenly ochreous-fulvous, with bronze 
shine, faintly dotted with dark grey; cilia light grey, base tinged with 
fulvous. 
Tegumen less narrowed above than in preceding species. Uncus narrow, 
top little dilated. Socius longer. Gnathos slender, hook much shorter. 
Valva narrow, dilated posteriorly, sacculus with a moderate terminal 
projection, with top curved downward. Aedoeagus very large and broad, 
gradually narrowed posteriorly, cornuti a sheaf of spines and a huge tooth 
(Slide No. 615 D, holotype). 
$ 12 mm. Head without tuft. Palpus greyish. Thorax ochreous-greyish 
posteriorly. Abdomen ochreous-grey, anal segment dark fuscous, anal tuft 
pale ochreous. Fore wing with costa gradually curved anteriorly, sinuate 
