SYSTEMATIC PART 
ALUCITIDAE 
This family is especially interesting owing to the wide distribution of 
many of its species, several of which are even cosmopolites. The number 
of species in the present collection is surprisingly small; but the more 
striking is the relatively large number of new forms. We have taken pains 
to compare our specimens with descriptions of many species outside the 
Indo-Malayan and Papuan-Australian regions but still had to describe 
not less than one genus and six species as new out of the ten species 
collected by the Expedition. 
1 . 
2 . 
3. 
4. 
5. 
6 . 
7. 
8 . 
9. 
10 . 
11 . 
12 . 
Key to the Papuan genera of the Alucitidae J ) 
Hind wing entire (Agdistinae) Steganodactyla Walsingham 
Hind wing trifid 2 
Third segment of hind wing with only one anal vein; female frenulum with 
single bristle; cilia usually with tufts of black scales (Platyptiliinae) . . 3 
Third segment of hind wing with more than one anal vein; female frenulum 
with several bristles; cilia without scale-tufts (Alucitinae) 13 
Fore wing trifid 4 
Fore wing bifid 5 
Fore wing with first cleft from about middle . . . Hexadactyla Fletcher 
F ore wing with first cleft from beyond middle .... Deuterocopus Zeller 
Fore wing with one or more costal veins absent 6 
Fore wing with all costal veins present, if veins 10 and 11 coincident, then 
veins 8 and 9 stalked 9 
Fore wing with vein 3 present, well -developed ..... Exelastis Meyrick 
Fore wing with vein 3 absent or obliterate posteriorly 7 
Fore wing with vein 7 present Trichoptilus Walsingham 
Fore wing with vein 7 absent 8 
Abdomen uniformly coloured; fore wing with a strong scale-tooth on dorsum 
beyond cleft Diacrotricha Zeller 
Abdomen variegated ; fore wing without scale-teeth on dorsum 
Cosmoclostis Meyrick 
Fore wing with veins 9, 10 and 11 out of 8 . . . . Tetraschalis Meyrick 
Fore wing with vein 11 not out of 8 10 
Fore wing with veins 9 and 10 out of 8 Fletcherella, new genus 
Fore wing with voin 10 not out of 8 11 
Fore wing with veins 10 and 11 stalked or coincident 
Sphenarches Meyrick 
Fore wing with veins 10 and 11 separate 12 
Hind wing without black scales in dorsal cilia; frons often with horny cone; 
fore wing with anal angles of segments weak Stenoptilia Hubner 
Hind wing usually with black scales in dorsal cilia; frons without homy cone; 
fore wing with anal angles of segments usually prominent . . Platyptilia Hubner 
b Partially adopted from Fletcher, Catal. Ind. Ins., vol. 20, pp. Ill— IV, 1931. 
