18 
MICROLEPIDOPTERA OF NEW GUINEA 
Leioptilus Wallengren, 1862, tom.cit., p. 21; etc. 
Lioptilus Zeller, Stett. Ent. Ztg., vol. 28, p. 331, 1867; etc. 
Alucita Me y rick, 1890 (nee Iannis, 1758), Trans. Ent. Soc. Lond. 1890, p. 487—488 ; 
etc. 
Ovendenia Tutt, 1905, Ent. Roc., vol. 17, p. 37. 
Hellinsia Tutt, 1905, tom.cit., p. 37. 
Emmelina Tutt, 1905, tom.cit., p. 37. 
The genitalia of the British species have been described and figured by 
Pierce (1938). The male genitalia are asymmetrical, and rather uniform, 
hut the claspers, which often differ considerably in right and left valva, 
provide clear-cut specific differences. 
Key to the Papuan species of Oidaematopliorus 
1. Fore wing with second segment lanceolate, anal angle indefinite 2 
Fore wing with second segment broader, anal angle distinct 3 
2. Fore wing cleft from before s / 3 ; light brownish -fuscous, costal third light brownish ; 
white, dilated streaks: along dorsum of first segment and along dorsum of wing 
mesoleucus spec. nov. 
Fore wing cleft from near middle; ground colour creamy- white with some fuscous 
irroration towards dorsum anteriorly . probatus Meyrick 
3. Male genitalia: left valva armed with a horn at about middle, directed down- 
ward and with a subapical spike irenae-us spec. nov. 1 ) 
Male genitalia: left valva armed with a submedian small ridge and an antemedian 
transverse bluntly pointed knob directed obliquely downward; no apical spike 
lienigianus Zeller 
Oidaematophorus mesoleucus spec. nov. (fig. 4) 
fiEOog = middle, /.ev/oq = white 
(j 19 — 23 mm. Head brownish-white, collar and face light brownish. 
Antenna fuscous. Palpus short,, fuscous. Thorax creamy-white, apical 
half of tegula slightly suffused with pale brownish; pectus whitish, faintly 
tinged yellowish. Abdomen creamy-white, segments 3 — 7 more or less 
infuscated above, posterior edge of these segments creamy. Legs fuscous 
finely mixed with white below, anterior leg whitish, dark fuscous above, 
posterior tarsus whitish. Fore wing cleft from before 2 / 3 ; first segment with 
narrow, falcate apex; second segment lanceolate, without anal angle. 
Costal third to 2 / 3 of first segment light brownish, becoming pale tawny 
posteriorly; more than median third light brownish -fuscous ; dorsum of 
first segment with a creamy-white streak from base of cleft gradually 
dilated posteriorly, reaching costa at 2 / 3 of that segment, and occupying 
entire apex; another such streak along dorsum of wing from base, not 
i) We do not use colouring and markings for discrimination of these two nearly 
allied species, as lienigianus is considerably variable while irenoeus which may be 
variable as well, is represented by one single specimen. For genitalia of lienigianus 
see Pierce, Genit. Brit. Pyrales, Delt. & Plumes, p. 51, plate 28, 1938. 
