44 PHILIPPINE DIPTERA, II 



Abdomen shining black, smooth; second, third, and fourth 

 segments in the male with a narrow yellow hind border, a 

 little dilated toward the middle; male genitalia black. In the 

 female the abdomen entirely black, at end only with a broad 

 yellowish membranous patch at base of the ovipositor; the last 

 with the basal segment depressed, black. Legs black, even on 

 the coxae; the four posterior tibia? with a middle yellowish ring 

 and yellowish bases, all the tarsi whitish, with blackish ends. 



Wings with numerous dark spots on the basal half, a broad, 

 middle brown band from stigma to the hind border interrupted 

 on lower half by hyaline spots, and a broad, complete brown 

 band from apex of the marginal cell to the middle of the hind 

 border of the second posterior cell ; in the hyaline space between 

 these two bands a series of spots forming a narrow, irregular 

 band united with the narrow fuscous border of the hind cross 

 vein; in the hyaline apical part of wing there are also three or 

 four dark spots, forming one or two irregular and shortened 

 bands. First posterior cell distinctly dilated outward; anterior 

 cross vein on the middle of the discoidal cell; anal cell much 

 shorter than the second basal cell, with the terminal vein 

 straight. 



LUZON, Laguna, Mount Maquiling (Baker) . 



186. Pterogenia parva sp. nov. 



Closely allied to P. tristis, but distinguished by the yellow noto- 

 pleural stripe, the shining dorsum of mesonotum, and the longer 

 plumose arista. 



Female. Length of body, 4 millimeters ; of wing, 4. Head as 

 in P. tristis, but the frons narrower and more elongate, being 

 about twice as long as broad, and black with, a narrow yellow 

 vertical band; a broader yellow supra-antennal band; and two 

 yellow spots before the middle. Yellow lower borders of eyes 

 broader ; face with only two black spots at end of the antennal 

 grooves; third antennal joint entirely yellow; feathers of the 

 arista twice as broad as the third antennal joint; prselabrum 

 yellow; palpi black. Mesonotum and scutellum shining black, 

 punctulate, with short black pubescence; humeral calli yellow, 

 like a notopleural stripe extending to the root of wings ; pleura 

 altogether shining black and black-haired. Halteres yellowish. 



Abdomen entirely shining black, even on the base of the ovi- 

 positor, smooth; ovipositor black, depressed. Legs black, but 

 the hind tibiae almost entirely yellowish, without differently 

 colored ring; tarsi whitish, with blackish ends. 



Wings as in P. tristis, but the dark spots of the basal less 



