4 6 



WAKO NAKAHAKA. 



etc. It differs from Nciironcma in having fewer radial sectors, from 

 Megalomus in having three series of gradate veinlets in forewing, and from 

 Drepaneptcryx in the forewing being not falcate at apex. 



Ninguta deltoides (Navas) 



Megalomus deltoïdes Navâs, Rev. Russ. d'Entom., ix, p. 397, fig. 1 (1910). 

 Nu7gula deltoïdes Navas, I.e., xii, p. 420 (1912). 



Head fulvous with a ^-shaped fuscous mark on vertex ; palpi yellowish, 

 last joint of maxillary palpus fuscous black. Antenna: yellowish, more 

 or less suffused with fuscous ; basal joint enlarged and spotted with fuscous. 



Prothorax ferruginous, covered with long yellowish hairs, with two 

 blackish longitudinal stripes above. Meso- and metathorax also ferrugi- 

 nous, irregularly irrorated with fuscous. 



Legs yellowish ; femur I with a fuscous mark near its end ; tibia I with 

 two distinct blackish marks ; tibia II with a blackish mark in middle. 



Forewing broad, tinged with light fuscous ; apical and hind marginal 

 areas densely clouded with fuscous ; a distinct deltoid white mark at the 

 middle of hind marginal area. Neuration yellowish, spotted and striped 

 with fuscous ; costal crossveins branched ; 3-5 radial sectors ; gradate 

 veinlets blackish ; outer gradate series runs almost parallel to the outer 

 magin of the wing. 



Hindwing hyaline, with marginal area slightly tinged with fuscous ; 

 pterostigmatic region fuscous brown ; neuration mostly yellowish. 



Abdomen ferruginous, somewhat fulvous at apex. The last ventral 

 segment of the male hairly, and produced into a large subgenitalplate. 



Measurements : 



Length of body 8-9 mm. 



Lengh for forewing 11-13 mm. 



Width of forewing about 5 mm. 



Length of hindwing 9-10 mm, 



Habitat : There exists in my collection a single female specimen 



