250 U.S. NATIONAL MUSEUM BULLETIN 25 7 



Forewing sometimes with anal area strongly dilated in male, normal 

 in female. Veins 2 and 3 stalked in male, distant in female. Veins 

 7 and 8 stallced, 7 to costa in the two sexes. 



Hindwing sometimes with anal area strongly dilated in male, normal 

 in female. 



Male genitaUa (platycypha) : Uncus big, bipartite, horns diverging, 

 each with a median thickening followed by a sinuate slender hook. 

 Gnathos apparently represented by a big vertical plate covering the 

 whole tegumen from the ventral side, upper portion of this plate with 

 a deep excision, in and behind which tuba analis is situated; lobes of 

 the plate flanking the excision are truncate above and at the sides; 

 transtilla, forming the base of the gnathos plate, is a simple transverse 

 band. Valva as in Ethmia, with a more or less isolated dorsal sclerite 

 representing the costal part, and the valva proper, with a swollen 

 sacculus bearing a triangular process before base; sacculus is over 1, 

 with a slender apical hook; cucuUus represented by a small, isolated 

 sclerite, forming the second (dorsal) hook of the valva. Anellus 

 rather short, heavy and tubular with a narrowed apical part, base 

 open ventrally. Anellus lobes long and slender, their bases shifted 

 to bases of valvae. Aedeagus moderate, rather slender, base strongly 

 curved. 



The first and the second abdominal segments each contain a pair of 

 expansible brushes of modified scales. 



Female genitalia have a strongly sclerotized, inverted V-shaped 

 sterigma as described with A. magnificella (Sauber) below. 



The genus is closely related to Ethmia. 



Key to the Philippine Species of Agrioceros 



1. Males 2 



Females A. magnificella, new combination 



2. Antenna thickened with long hairlike white cilia A. platycypha 



Antenna simple A. magnificella, new combination 



Agrioceros platycypha Meyrick, 1928 



Figures 386, 744-745 



Agiioceros platycypha Meyrick, 1928, Exotic Microlepidoptera, vol. 4, p. 418 (1 d', 

 "Kabuntug," Philippine Is.). — Clarke, 1955, Catalogue . . . Microlepidop- 

 tera . . . Meyrick, vol. 1, p. 251; 1965, op. cit., vol. 5, p. 417, pi. 206, figs. 

 1-ld, holotype figured). 



Distribution: Phihppine Is., Mindanao. 



Material examined: Leyte, Bm-auen, V.1915 (B.P. Clark, donor), 

 "28," ''Agrioceros platycypha Meyr., paratype." "d^ genitalia on 

 slide A.B. May 10, 1927" (USNM) (the specimen is not cited in the 

 original description and apparently was not sent to Meyrick.); 1 cf . 



The male genitalia are described with the genus above. 



