xui, D, 6 Felt: New Philippine Gall Midges 311 



fir^ The first antennal segment not toothed, the mesonotum with 

 two lines of golden scales, the wings with smoky spots, 



iridescent Lasiodiplosis Kieff. 



/^ Costa not scaled. 



g'^. Third vein uniting with the margin at the apex of the wing. 

 h^. Third vein interrupting the margin. 



i''. Basal clasp segment not lobed; ovipositor long, slender; 



wings hyaline Contarinia Rond. 



f . As in Contarinia, except that the wings are spotted. 



Stictodiplosis Kieff. 



i'. Basal clasp segment with a triangular lobe basally; 



ovipositor short and with a semicircular ventral 



piece Procontarinia Kieff. and Cec. 



A". Third vein not interrupting the margin at its union 

 with costa. 

 i\ Ventral plate not longer than the dorsal, bilobed; ter- 

 minal clasp segment large, pubescent; ovipositor 



long Thecodiplosis Kieff. 



f. Ventral plate linear, much longer than the dorsal, 

 emarginate; terminal clasp segment slender, smooth; 



ovipositor slightly produced Sitodiplosis Kieff. 



g'-. Third vein uniting with the margin beyond the apex of 

 the wing. 

 /(\ Terminal clasp segment of the male short, thick, pubes- 

 cent; fourteenth antennal segment of the female with 



a large conical appendage Stephodiplosis Tav. 



/r. Terminal clasp segment moderately long, not pubescent; 

 fourteenth antennal segment of the female without a 



conspicuous appendage Syndlplosls Riibs. 



d\ Some flagellate antennal segments of the male cylindrical. 

 6\ Palpi quadriarticulate. 



c\ All the flagellate antennal segments of the male cylindrical. 

 cP. Claws toothed, curved at almost right angles. 



e\ Circumfila low; terminal clasp segment slender, the lobes of the 



dorsal plate rounded Holobremia Kieff.* 



d-. Claws simple. 



e\ Ventral plate a little longer than the dorsal plate; terminal 

 clasn segment short, plainly swollen near the middle. 



Geisenheyneria Rubs.* 

 e^ Ventral plate linear, emarginate apically, much longer than 

 the dorsal plate; terminal clasp segment slender. 



Monodiplosis Riibs.* 

 e^ Dorsal plate divided, the lobes triangular; ventral plate a little 

 longer, linear, rounded; terminal clasp segment somewhat 

 enlarged, slightly arched; ovipositor not produced. 



Stroblophila Kieff. 

 c'. Terminal flagellate antennal segments cylindric. 



d\ Circumfila with a length one-half the setse, the stems shorter 

 than the nodes, those of the two terminal segments wanting 



"■' Location provisional. 



