2 PEOCEEDINGS V. S. NATIONAL MUSEUM vol.74 



Abdomen yellow, somewhat brownish above, the basal joint much 

 shorter and broader than in Adapsilia -flaviseta^ the remaining seg- 

 ments also shorter. The posterior or apparent sixth segment is 

 nearly twice as long as all the rest of the abdomen, compressed, and 

 at the tip turned downward; the first abdominal segment has a 

 cluster of long hair on each side near its tip ; the following segments 

 are more hairy in the middle, while the posterior has dense long hair 

 all over, which becomes a little more delicate apically. All of the 

 hair of the abdomen is brown or blackish. 



Legs yellow, femora somewhat thickened, the hind femora with 

 two or three partial rows of conspicuous bristles on the upper side 

 of the apical third. 



Wing subhyaline with a dark shadow on the fork on the origin of 

 the second vein, narrow dark margins on the cross veins and an 

 infuscation of the tip beginning at the hind cross vein. The third 

 vein ends exactly in the tip of the wing, the costa continuing very 

 slightly beyond it, the fourth vein bends rather strikingly backward 

 near the margin of the wing and becomes almost evanescent, its last 

 section is more than double the preceding, the distance between iho, 

 cross veins being about three-fourths of the length of the hind one. 



Length, in the normal curved position. 5.2 mm. 



Described from two females bred from ruteline beetles of the genus 

 Adoretus at T^ihoku, Formosa, by D. T. Fullaway. 



7yp^._Female, Cat. No. 40984, U.S.N.M. 



Genus ADAPSILIA Waga. 



Adapsilia Waga, Ann. Soc. Ent. Fr., vol. 11, 1842, p. 280. 

 ADAPSILIA FLAVISETA, new species 



In Hendel's key to the genus- the species would go in the first 

 division, with the scutellum hairy on the disk, but readily separates 

 from the two species included there by Hendel. It differs from both 

 in having the wing infuscated throughout except the second basal 

 and anal cells and the basal portion of the discal ; the color is deepest 

 between the second and third veins and a little behind the third. 

 The second vein has an appendage as in niagnicomis^ which, how- 

 ever, has a transverse infuscated band on the wing. 



It is more closely related to triiiotata De Meijere,^ which, however, 

 is considerably paler in color, with the pleurae chiefly yellow and 

 a different color pattern in the wing. 



Female. — Head dark reddish brown, facial carina, inner part of 

 facial ridges, epistoma, and a triangular spot below the eye shining 

 black. Back of head opaque black except along the eye and a semi- 



^Archir fiir Naturgeschichte, vol. 79, 1918, p. 81. 

 s Tijdsch. Entom., vol. 57. 1914, p. 182. 



