300 The Philippme Journal of Science ibis 



ITONIDIDIN^^ 



PORRICONDYLARI^E 



Key to the genera.* 



a\ Cross vein not parallel with costa, forming a well-marked angle there- 

 with. 

 6'. Four long veins, the fifth simple, the sixth free. 



c^. Fifth vein arising from the third near the cross vein, a super- 

 numerary vein at the basal third of subcosta Diallactes Kiefif. 



c'. Fifth vein arising from the base of the wing, no supernumerary 

 vein at the basal third of subcosta. 

 (P. Fifth vein well developed; circumfila modified to form horseshoe- 

 like appendages on opposite faces of the segment. 



(Sjm. Winnertziola Kieflf.) 

 (F. Fifth vein rudimentary, obsolete basad and apicad (Australian). 



Gonioclema Skuse.f 

 b'. Three long veins, the sixth a branch of the fifth or wanting. 



c". Wings not very long and narrow, the cross vein at an oblique angle 

 to costa. 

 d\ Fifth vein forked, the sixth a branch of the fifth. 



e\ Fifth vein close to the posterior margin and uniting therewith 

 near the basal half; palpi triarticulate; terminal clasp seg- 

 ment short Bryocrypta Kieff. 



e'. Fifth vein not close to the posterior margin, uniting therewith 

 near the distal fourth; palpi quadriarticulate. 

 f^. No supernumerary vein at base of subcosta; claws toothed; 

 terminal clasp segment greatly produced, slender. 



Didactylomyia Felt. 

 f. Supernumerary vein at base of subcosta; claws simple. 



Liebliola Kieff. and Jorg. 

 dr. Fifth vein simple, the sixth wanting. 



c\ Palpi quadriarticulate Johiisonoin3rla Felt.J 



e-. Palpi Particulate Colomyia Kieff. 



c\ Wings usually very long, narrow, the cross vein almost at right 

 angles to costa. 

 (f. Fifth vein forked, the sixth a branch of the fifth; terminal clasp 

 segment short, swollen, the claws usually simple. 



Colpodia Winn. 

 <f . Fifth vein simple, not reaching the wing margin. 



Clinophsena Kieif. 

 (P. Fifth vein simple, the sixth wanting (fossil). 



Palaeocolpodia Meun. 

 a^ Cross vein parallel or nearly so with costa and apparently a continua- 

 tion of the third vein. 



* Revised from Bull. N. Y. State Mus. (1915), No. 180. 128-30. 



t Location provisional. 



t The absence of circumfila compels the reference of this genus to the 

 Heteropezinse, though the superficial wing and antennal structures would 

 place it here. It has therefore been included in the key simply to facilitate 

 identification. 



