34 
MICRO LEPIDOPTERA OP NEW GUINEA 
scales towards apex above, or rather roughly scaled throughout, median 
segment moderately S-curved, terminal segment subobtuse or pointed. 
Thorax without crest. Fore wing broad, truncate, mostly with a large 
costal fold in male, either smoothly scaled and brightly coloured or snow- 
white with sparse black markings (diurnal species), or roughly scaled, 
with costa ciliate throughout, and with greyish or brownish markings 
(nocturnal species). Abdomen in male with an extremely large anal tuft, 
in female with corethrogvne r ) (fig. 24), being a large area of the seventh 
ventrite, clothed with extremely dense conspicuously coloured hairs or 
scales, forming a kind of brush around the ovipositor. 
uncus 
socius 
tegumen 
gnathos arm 
gnathos hook 
transtilla 
transtilla knob 
median projection 
penieulus 
valva 
base of sacculus 
juxta with median 
furrow 
vinculum 
ductus ejaculatorius 
cornuti 
aedoeagus, orifice 
aedoeagus, point 
Fig. 13: Zacorisca holantha Meyrick, male genitalia. (After Diakonoff, 1939). 
Male genitalia highly developed and complicated: tegumen and uncus 
very large, valva with plicate disc, semimembraneous, with extremely 
large brushes of long hairs; transtilla paired, each half consisting of a 
lateral, strongly dentate part which we call transtilla knob, as it is not 
') cf. Diakonoff, Treubia, vol. hors serie, p. 36, 1944. 
