MICROLEPIDOPTERA OE NEW GUINEA 
103 
Genotype Dieda scuticornis spec, nov., male. 
Perhaps correlated with the otherwise isolated Macarophantha Meyrick, 
from Kashmir, with the neuration perhaps chiefly differing in the inter- 
pretation of the absent veins, but also with longer palpi and a large smooth 
flap of scales on the scape of the antenna. The unique specimen of the 
present species is in a damaged condition but we describe the genus 
nevertheless, as the neuration is quite distinct and peculiar. 
Dieda scuticornis spec. nov. (fig. 813) 
13 mm. Head, palpus and thorax sordid creamy -white, the latter 
slightly mixed with pale fuscous anteriorly. Antenna creamy-white, 
moderately infuscated above. (Abdomen missing.) Anterior leg whitish- 
fuscous, tibia dark fuscous, tarsus pale-ringed (other legs missing). Fore 
wing elongate, gradually dilated, broadest at 4 / 5 , thence rather abruptly 
pointed, posterior 1 / 5 of costa and termen equally oblique. Creamy-white, 
slightly suffused with isabel-colour, markings formed by brownish irroration 
tending to form transverse strigulae; some scattered brown points below 
costa anteriorly, below fold beyond base, and along fold to beyond its 
middle ; a series of irregular transverse strigulae along dorsum from about 
1 / 4 to torn us ; indication of an almost vertical transverse brown fascia at 
3 / 4 , formed by a dot below costa and two larger brown spots: above and 
below cell, respectively; an ill-defined elongate patch of fuscous suffusion 
in disc above middle, from middle to 3 / 4 of wing. Cilia (imperfect) creamy, 
with pale golden gloss. Hind wing thinly scaled, scales hair-like; crearny- 
isabel, appearing pale bluish between veins by slight opalescence. Cilia 
pale golden-ochreous. 
Mist Camp, 1800 m, January 19, 1939. One specimen. 
LYONETIIDAE 
Key to the Papuan genera of Lyonetiidae 
1. Head roughly or loosely haired or with a tuft on vertex 2 
Head smooth 4 
2. Hind wing with reduced neuration: cell obliterate, vein 7 from base to apex, 
4 absent, 5 and 6 stalked, out of 7 Orochion gen. nov. 
Hind wing with normal neuration, vein 4 present, 5 and 6 stalked, out of dis- 
coidal vein ® 
3. Fore wing with veins 5 and 7 absent. Scape of antenna with a flap of scales 
forming a small eyecap Dolerothera Meyrick 
Fore wing with vein 5 present, 7 absent. Scape of antenna normal 
Decadarchis Meyrick 
4. Fore wing with veins 6, 7 and 8 stalked, Opogona Zeller . 
Fore wing with all veins separate Asymplecta Meyrick 
