218 U.S. NATIONAL MUSEUM BULLETIN 25 7 



Aurivillius, Lepidopterorum Catalogus, pars 13, p. 13; 1914, in Wytsman, 

 Genera Insectorum, fasc. 165, p. 12; 1914, Entom. Mitt., Suppl. 3, p. 56 

 (Formosa). — Maxwell-Lefroy 1909, Indian Insect Life, p. 537. — Imms and 

 Chatterjee, 1915, Indian Forest. Mem., vol. 3, pt. 1, pi. 32, pi. 7, fig. 23; 

 1917, Rep. Proc. 2nd Ent. Meeting Pusa, p. 96. 



Distribution: Throughout India and Ceylon; Formosa. 



Material examined: Luzon, Agoo, La Union, 1.V.1945 (J.G. 

 Franclemont), 1 9, genit. slide 5133 (GUI). 



The specimen has somewhat faded markings; the yellow of the 

 background is also less vivid than in the examples from India at 

 my disposal (genit. shde 51349, Pusa). The collar is pale ochreous 

 instead of yellow. Still, the Indian specimens are rather variable as 

 to the markings. Therefore, I am satisfied that the present specimen 

 does not represent a distinct subspecies. The female genitaha are 

 identical mth those of the female from Pusa. 



Trichothyrsa Meyrick, 1912 



Trichothyrsa bicolorella (Sauber, 1902) 



Figures 821, 835-836 



Eretmocera bicolorella Sauber, 1902, in Semper, Schmetterlinge Philippinischen 

 Inseln, vol. 2, p. 698 (cf ? , Luzon). 



Trichothyrsa bicolorella. — Meyrick, 1913, in Aurivillius, Lepidopterorum Cata- 

 logus, pars 13, p. 19; 1914, in Wytsman, Genera Insectorum, fasc. 165, 

 p. 24. 



Distribution: Philippine Is., Luzon. 



Lectotype, cf , herewith selected, Luzon, genit. slide 5871 (SMF). 



Male genitalia: Uncus bifid, strongly sclerotized, hairy. Gnathos 

 robust, closely appressed to uncus, sclerotized on upper surface, top 

 ending in a down-curved thorn. Valva with sacculus half reduced 

 to a narrow cuspidate blade. Cucullus part of valva long, slender, 

 clavate and hairy at base and top. Aedeagus slender, sclerotized, 

 sinuate. 



Aegeriidae 



The systematics of this most fascinating group are still in a state of 

 considerable confusion. A worldwide revision of the family, based 

 also on the genital characters, is badly needed. The study of the 

 Aegeriidae is greatly hampered by the scarcity of tropical material 

 available and by its usually poor condition. These insects are difficult 

 to collect, the larvae being borers of living lignous plants while 

 the adults usually do not come to light traps. They fly in daytime 

 and are so vigorous that they damage themselves easily after capture. 



