TIPULID.E. 3.'5 



ANTOOIIINI. 



1. Ixostruin at least as long as tliu licad, sonu'tinics very long; no marginal 



cross-vein. ........... '2 



liostruni shorter than the head. ....... 4 



2. Wings without submarginal cell Toxouiuiixa Loew. 



AVings with a submarginal cell. ....... C 



0. Kostruni not much longer than the head. . Rhampiiiiha Meigen. 

 Kostruin the length of the whole body. ELErHANxoMViA Osten Sacken. 



4. Discal cell open. .......... 5 



Discal cell closed. .......... 



6. Second basal cell considerably shorter than the first, the great cross- 



vein more proximal than the origin of the second vein; three 

 posterior cells. .... Diotisepha Osten Sacken. 



Second basal cell of about the same length as the first. 



Ellipteua Schiner. 



C. No marginal cross-vein whatever. . . . Atarua Osten Sacken. 

 Marginal cross-vein present. . . . . . . . . 7 



7. First longitudinal vein ends in the costa nearly opposite the inner end 



of the submarginal cell 8 



The first vein ends in the costa far Ijcyond the inner end of the submar- 

 ginal cell. .... DiCRANOPTYCHA Ostcu Sackcu. 



8. Submarginal cell as long or but little longer than the first posterior cell. 



Teucholaris Osten Sacken. 

 Submarginal cell much longer than the first posterior cell. 



Antocha Osten Sacken. 



ElilOrXKHINI. 



1. Five posterior cells. .... Ci.adura Osten Sacken. 

 Four posterior cells. ......... 2 



2. 'J'he inner marginal cell has almo>l tiie shape of an equilateral triangle. 



Cryptolabis Osten Sacken. 

 IniHT marginal cell of the usual shai)e. ...... o 



M. Wings coiisi>icu()Usly hairy on the whole surface or along the veins. 4 

 Wings not conspicuously hairy, veins bare or nearly so.* . . 



4. Wings hairy on the whole surface. . EiiYPiioi.opurs Kolenati. 



Wings hairy along the veins only. ...... 5 



* Antennal joints subreniform and nodose; the eyes nearly contiguous 

 above and below (Central America). . Sigmatomera Osten Sacken. 



