MICROLEPIDOPTERA OF PHILIPPINE ISLANDS 215 



with a strong bronze gloss, posterior coxa, femur and basal fourth 

 of tibia yellow whitish. 



Forewing lanceolate, narrow, pointed. Black, with a moderate 

 anthracite gloss, cilia concolorous. Hindwing fuscous purple, cilia 

 black with a suffused, faint whitish basal band. 



Male genitaha: Eighth tergite and sternite modified. Coremata 

 large, at the foot of the 8th segment. Tegumen elongate, rather 

 strong. Vinculiun slender, triangular, without saccus. Valva little 

 curved, very slender, lanceolate, base dilated, cvicuUus rounded, short- 

 bristled. Uncus slightly asymmetrical, furcate. Gnathos huge, ir- 

 regular, asymmetrical-bicuspid, left top rounded, right short-hooked. 

 Aedeagus pointed, sinuate, very slender and sclerotized. 



Female genitalia: Ovipositor moderately long. Apophyses, simple, 

 slender rods. Sterigma represented by a subquadrate plate with a 

 quadrate median incision of upper half occupying one third, and a 

 triangular one over the whole breadth of lower edge. Lower half 

 rather sclerotized, in center forming a narrow rim triangularly pro- 

 jecting forward. Ductus and corpus bursae membranous, bursa 

 simple. 



Material examined: Luzon, Manila, AprU and May, 1924, genit. 

 slides 5432 d', 55209 (R.C. McGregor). Mt. Apo, 70, 9.III.1945 

 (J.G. Franclemont), 1 d^ (GUI). Mt. Makiling (Baker) Occidental 

 Negros, La Carlota Cen., 24 (A.W. Lopez). Many specimens 

 (USNM). 



Xestocasis (Meyrick, 1914) 



Key to the Philippine Species of Xestocasis 



1. Forewing with four pale transverse fasciae X. erymnota 



Forewing with only two such fasciae X. iostroat 



Xestocasis iostrota (Meyrick, 1910) 



Figures 321, 695 



Limnoecia iostrota Meyrick, 1910, Trans. Roy. Ent. Soc. London, p. 454 (Borneo, 

 India). — Clarke, 1955, Catalogue . . . Microlepidoptera . . . Meyrick, vol. 

 1, p. 175. 



Xestocasis iostrota. — Meyrick, 1914, Suppl. Ent., no. 3, p. 54 (Formosa). 



Distribution: India, Borneo, Tonkin, Formosa, Philippine Is. 



Material examined: Negros, Victorias, Sara via, Silar, on sugar cane 

 {Saccharum dulce), VI-IX.1928, genit. slides cT 9, no. "A.B. June 17, 

 1930," 6 specimens (USNM). Mindanao, Davao Prov., east slope 

 of Mt. McKinley, 3000 ft., IX. 1946 (CNHM Philippine Exped. 

 1946-47, H. Hoogstraal), 2 9. 



