476 The Philippine Journal of Science mm 



Male.— Length, excluding rostrum, 4.6 millimeters; wing, 

 5.4. Rostrum elongate, brownish black. Antennae dark brown. 

 Vertex between the eyes broad, dark brown, the anterior por- 

 tion and a narrow margin adjoining the eyes light gray. 



Mesonotal pnescutum yellowish gray with three conspicuous 

 dark brown stripes; scutum dull gray, the lobes brown; re- 

 mainder of the mesonotum dark gray. Pleura dark gray, the 

 dorsal sclerites indistinctly darker; sternites more plumbeous. 

 Halteres testaceous. Legs with the coxae and trochanters pale 

 brownish testaceous; remainder of the legs dark brown, only 

 the femoral bases narrowly paler. Wings pale grayish subhya- 

 line; veins pale brown. Venation: Sc x ending a short distance 

 beyond the origin of Rs, Sc 2 a slightly greater distance before 

 this origin; basal deflection of <X about one-fifth its length 

 beyond the fork of M. 



Abdomen dark brown, only the hypopygium paler. 

 Habitat. — Formosa. 



Holotype, male, Tattaka, altitude about 7,400 feet (about 2,250 

 meters), August 18, 1921 (T. Esaki) . 



Genus TAIWANOMYIA novum 



Antennae elongate, in the male twice as long as the body, in 

 the female extending to beyond the wing root, 16-segmented. 

 Tuberculate pits elongate-oval, lying close together a short dis- 

 tance back from the cephalic margin of the praescutum. Tibiae 

 spurred; claws small, simple; empodia distinct. Wings with 

 Sc long, Sc x ending a short distance before r-m, Sc 2 a short 

 distance from the tip of Sc, ; Rs angulated or spurred at origin; 

 R 2+3 very long, about equal to or longer than its fork ; r close 

 to the fork of R 2+3 and about twice its length from the tip 

 of R t ; deflection of R 4+5 very long, subequal to Rs; cell M t 

 lacking; outer deflection of M 3 long and arcuated; basal deflec- 

 tion of Cu x from one and one-half to nearly twice its length 

 before the fork of M; vein 2d A ending beyond the level of 

 the origin of Rs ; arculus complete. Ovipositor with all valves 

 long and straight, the sternal valves a little exceeding the 

 stouter tergal valves. 



Genotype, Taseocera fragilicomis Riedel, of Formosa. 



Riedel failed to detect the tibial spurs and placed this fly 

 in the tribe Eriopterini. The genus is a very isolated one, and 

 no immediate relatives can be indicated. The chief venational 



