264 U.S. NATIONAL MUSEUM BULLETIN 2 57 



Material examined: Luzon, Manila, in flower buds of Caesalpinia 

 pulcherrima, 23.1.1918, 1 cocoon on dried leaflet, with empty exuvium 

 sticking out (USNM). 



Lithocolletis Iliibner, 1825 



Lithocolletis triarcha Meyrick, 1908 



Lithocolletis triarcha Meyrick, 1908, Joum. Bombay Nat. Hist. Soc, vol. 18, 

 p. 811 ( 9 , Bengal, cotton leafminer) ; 1912, in Wytsman, Genera Insectorura, 

 fasc. 128, p. 8; 1921, Ann. Transvaal Mus., vol. 8, p. 121 (S. Africa). Max- 

 well-Lefroy, 1909, Indian Insect Life, p. 537. — Fletcher, 1921, Mem. Dept. 

 Agric. India, Ent. ser., vol. 6, p. 137, pi. 33 (life history, India)— 1933, 

 Imp. Counc. Agric. Res., Sci. Mon., no. 4, p. 40. — Clarke, 1955, Catalogue 

 . . . Microlepidoptera . . . Meyrick, vol. 1, p. 314. 



Distribution: India, South Africa. 



Food plant: Cotton (Gossypium) (leaf miner). 



Material examined: Luzon, May 1931 (V. Aldaba), 17 specimens, 

 pasted, "Lithocolletis triarcha Meyr. A.B. det. 1931." Negros, 

 Victorias, 24.VII.1928, "leaf miner in cotton" (W.D. Pierde). 3 speci- 

 mens (1 cf,2 9) (USNM). 



Lyonetiidae 



Key to the Philippine Genera of Lyonetiidae 



1. Forewing with apex turned upwards or downwards; head normal. 



Decadarchis 

 Forewing with apex normal; head flattened, often a fillet on vertex. 



Opogona 



Opogona Zeller, 1853 



Key to the Philippine Species of Opogona 



1. Forewing j^ellow with posterior half dark fuscous-grey . . . O. dimidiatella 

 Forewing pale yellow, with two costal, one dorsal and one discal small dark 



marks O. icterica 



Forewing purple with a yellow transverse band O. flavofasciata 



Opogona icterica Meyrick, 1915 



Opogona icterica Meyrick, 1915, Exotic Microlepidoptera, vol. 1, p. 360 (cT, 

 Mindanao). — Clarke, 1955, Catalogue . . . Microlepidoptera . . . Mey- 

 rick, voL 1, p. 166. 



Distribution: Philippine Is., Mindanao. 



The type specimen is in the British Museum (Natural History). 



