90 
MICROLEPIDOPTERA OP NEW GUINEA 
Gelechiidae and the Cosmopterigidae. They are entirely absent in the 
Stenomidae. 
The male genitalia are of a simple and uniform type, with only slight 
differences between the genera. Tegumen rather short, triangular. Uncus 
and gnathos both triangular, strong, porrect, together forming a pair of 
tongs, gnathos often embossed towards the apex above. Small lateral 
haired knobs below the base of the uncus represent the socii. Valva 
simple, elongate-ovate or pointed, thinly bristled, harpe mostly developed 
as a sclerotized continuation of the median part of the edge of the saccvdus, 
running longitudinally over the disc of the valva and often forming a 
strong blunt hook; sacculus broad, folded over the valva. Vinculum 
strong, pointed or ovate. Juxta sclerotized, under a blunt angle to this fits 
a very strong anellus, which is often shaped as a large and bulbate sheet, 
rolled around the aedoeagus and enclosing this distal ly altogether. 
Aedoeagus is a strong, slender, narrow tube slightly and gradually 
tapering apically, telescoping within the juxta. A cornutus is seldom 
present. 
The female genitalia are of the Oecophorid type. Ovipositor rather 
broad, erect, lobes simple; it is extensile over the length of the eighth 
segment, which is mostly shorter than the ovipositor itself; postapophyses 
long. Ostium wide, seldom modified, limen mostly a broad weak trans- 
verse plate, emarginate in the middle, dorsal wall of ostium formed by 
one, two or three broad, densely haired lobes. Ductus bursae simple or 
with a moderate tubular colliculum in its proximal half, distal half some- 
times spiraled. Bursa copulatrix ovoid, mostly simple. 
1 . 
3. 
5. 
6 . 
7. 
Key tot he Papuan genera of the Xyloryctidae 
Fore wing with a costal scale-projection before and beyond middle, and ap- 
pearing to be excavate between these projections. Fore wing with veins 2 and 
3 separate, 8 absent Aeria [Stephens 
Fore wing with costa normally scaled, not seemingly excavate .... 2 
Fore wing with vein 7 absent GalKcopris Meyrick 
Fore wing with all veins present " 
Fore wing with closing vein between 3 and 4 inwardly oblique, between 5 and 
6 very weak, cell appearing to be open, veins 7 and 8 stalked Pansepta Meyrick 
Fore wing with closing vein not thus 4 
Fore wing with vein 2 from angle, veins 3 — 5 approximated, 6 and 9 approxi- 
mated (7 and 8 separate) Eriogenes Meyrick 
Neuration of fore wing not thus 5 
Hind wing with veins 6 and 7 remote 6 
Hind wing with veins 6 and 7 closely approximated, connate or stalked; vein 
8 often connected with cell by a bar 7 
Hind wing with vein 7 to costa; cell closed Phthonerodes Meyrick 
Hind wing with 7 to termen; cell partially open Stachyneura Diakonoff 
Fore wing with veins 8 and 9 out of 7 8 
Fore wing with vein 9 separate b 18 
x ) In Cryptophasa thiobapta (Meyrick), vein 9 sometimes out of 7. 
