FORMOSAN Adllo.MYZIDAK. 8B5 



weak; discal selula* Aveak, about S irregular rows between anterior dorso- 

 centrals. Abdomen ovate: ovipositor stout. Leffs slender; tibia* without 

 setulae. Second costal division 1 U times as k)ng as first ; third, one-thii'd as 

 long as first ; ajX'X of costa at end of third vein and as far from apex of wing, 

 measuring round the margin of wing, as the length of first costal division: 

 fourth vein ending at wing tip. 



Length: r25 mm. 



Type: Tainan. May. l!tl-2. 



Paratyi)e: Takao. April :>:]. li»07. 



Phytomyza subaffinis n. sp. 



Female: Black. Head yellow; ocellar region, antenna*, and arista black; 

 palpi brownish. Entire thoiax densely covered with gray pollen. Abdomen 

 glossy black with the dorsum slightly gray dusted, and the posterior margins 

 of the segments narrowly yellow. Legs black, knees narrowly yellow. Wings 

 slightly grayish, veins distinct, Inownish, fourth slightly less conspicuous than 

 fifth, first and third very distinct, though not thickened. Squamte and their 

 fringes grayish. Halteres pale yellow. 



Frons two-fifths the head width: orbits distinct, each about one 

 half as wide as center sti'ipe ; thiee pairs of orl)itals present, which decrease 

 in length anteriorly, and in addition to these there are a few hairs 

 nearer to the eye margin; antennte of moderate size, third joint rounded; 

 arista thickened, tapering to shgthly beyond middle, bare, its length equal 

 to that of frons; cheek one-third as high as eye, marginal hairs distinct, 

 vil)iissa well differentiated. Mesonotum with 4 pairs of strong dorso-centrals, 

 whi(di do not decrease much in length anteriorly : disc between the dorso- 

 centrals bare, or rarely with one or two scattered setulae: no bristles 

 between the posterior dorso-centrals. Abdomen elongate, surface with a 

 few short hairs; ovipositor stout, as long as the last segment. Legs slender; 

 tibice unarmed. Wings more elongate than in spicafa, but the costal divi- 

 sions similar. 



Length: LTo— •2-5 nun. 



Type: Chip-Chip, February. 



Paratypes: Taihoku. Apiil. 1!»1'2: Chip-Chii». February. 1912. '.] spe- 

 cimens; Tainan. February. 



Male: Similar to the female in color and cluetotaxy. The hypopygium 

 is large and rather pi-ominent, its form very similar to that of the species 

 in Agw}fui:((. 



Alloty[)e: Tainan. February. 



