FOKMOSAN AGROMYZIDAE. 321 



the sides tapering iimcli to the apex ; ovipositor projecting, circular in cross 

 section, not elongated. Legs strong, mid til)ia with distinct posterior bristles. 

 Wing venation as fig. 12. 



Length: 2"75— 3'5 mm. 



Locahty: Pilam, August, 1912. 



Paratypes: Takao, April and May, 1912. Three females. 



\-2. Agromyza latipennis n. sp. 



Male: Black, shining. Apex of proboscis brownish. Halteres yellow, 

 the knobs white. Legs black, the tibiae and tarsi brownish-black. SquamaB 

 brown, the margins and the fringes dark brown. Wings clear veins black. 



Frons slightly less than one third the width of the head, almost paral- 

 lel-sided, orbits slightly differentiated from the central stripe, glossy at 

 the bases of the bristles, otherwise subopaque; ocellar triangle distinct, 

 glossy ; four pairs of orbital bristles present, the two upper pairs backwardly 

 directed the tw'O lower pairs inwardly directed, the bristles decreasing much 

 in length anteriorly, the anterior pair mere hairs, orbits otherwise bare; 

 antennae above the average in size, third joint rounded at apex, distinctly 

 pilose ; arista tapering, rather thick, the pubescence distinct though short ; 

 length of arista equal to from its base to upper orbital bristle ; face distinctly 

 retreating; cheek linear, slightly higher posteriorly. Mesonotum w4th 3 

 pairs of dorso-centrals, the anterior pair weak ; cephalad of the anterior pair 

 of bristles there is sometimes a setulose hair stronger than the discal setulae, 

 which is posterior to the suture; the pair of bristles between the posterior 

 dorso-centrals distinct ; discal setulae rather numerous, about 8 rows between 

 the anterior dorso-centrals. Abdomen short and broad, the surface with 

 rather long brownish hairs ; hypopygium glossy black. Legs normal in shape ; 

 the tw^o bristles present on the posterior surface of the mid tibia. Wing very 

 broad, veins fine and very distinct : fig. 18. 



Length : l"2o mm. 



Locahty: Takao, 300 m. alt., March 31, 1907. 



Female: Similar to the male in coloration and chaetotaxy ; the ovi- 

 positor is highly glossy, and distinctly protruding. In size slightly larger 

 than the male. 



Allotype and paratype : Same data as the type. 



1 3. Agromyza koshunensis n. sp. 



Male: Black, shining. Frontal lunule white pollinose; center stripe of 

 frons opaque, orbits and ocellar region shining; antennae and palpi black: 



Aniialej: Musoi Xationalis Huiinarui. XII. -A 



