392 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



Family TIPULIDAE. 



KEY TO SUBFAMILIES AND TRIBES. 



1. Last segment of the maxillary palpi elongate, whiplasli-like ; uasus usually 



distinct; antennae u.sually with 13 segments; Sc almost alwa.vs ending in 

 R; ni-cu present or obliterated by the usually slight fusion of Cui on Ms. 

 (In Brachypretnna, Sc is unusually long and ends in costa and the fusion 

 of Cui and Ma is rather extensive, but the antennae are 13-segmeuted, the 



palpi elongate, and the nasns distinct) Tipulinae 2. 



Last segment of the maxillary palpi short ; no distinct na.sus ; antennae 

 usually with 14 or 16 segments; Sc ending in C but connected with R by 

 Scu; m-cu obliterated by the long fusion of Cm, on Mz. (Pedicia has the 



palpi elongate but all other features are essentially Limnobiine.) 



Limnoliiinae; Cylindrotominae 4. 



2. Vein R2 obliterated by atrophy, or (Bracliypremna) , the second anal vein 



very short, not more than one-third the length of the first anal vein ; 



legs very long and slender Dolichopczini (p. 393). 



Vein R 2 present for its entire length ; second anal vein longer, about one- 

 half of the length of the first or more; legs usually shorter and stouter__3. 



3. Antennae without verticils ; flagellum of the male antennae pectinate 



Ctenophorini (p. 394). 



Antennae verticillate ; flagellum of the male antennae not pectinate 



TipuUni (p. 395). 



4. Four branches of radious reaching the wing margin. (In Gonomyia blanda,. 



R 2 runs close to 72 1 at the margin so but three branches appear to attain 



the margin) w. , 5. 



Two or three branches of radius reaching the wing margin 9. 



5. Tibiae spurred at tip 6; 



Tibiae without spurs at tip Erioptcrini (p. 416). 



6. Antennae with from 6 to 10 segments Eewatomini (p. 428). 



Antennae with more than 10 segments 7. 



7. Sci beyond the origin of Rs LimnopTiiUni (except Via) (p. 423). 



SCi before the origin of Rs 8: 



8. Antennae 17-segmented ; wings entirely pubescent 



Ula {LimnopMUni) (p. 423). 

 Antennae with from 13 to 16 segments Pediciini (p. 429). 



9. Tibiae spurred; an apparent fusion of Ri+s+a to the wing margin, so that 



but two branches of the radius are present Cylindrotominae (p. 432). 



Tibiae without spurs (In the genera AUtrha and Elcphantomyia of the 

 Antochini, the tibiae bear small spurs, but the venation is not as in the 

 Cylindrotominae.) Veins Ri and R2*3 not contiguous at their tips. 



10. Antennae with 12, 15 or 16 segments; claws usually without teeth on their 



lower side, or at most with a single subbasal tooth 11. 



Antennae with 14 segments; claws with teeth on their lower side 



LimnoMini (p. 407). 



11. Crossvein r lacking; Sc ending before the origin of the short Rs; 72 2+3 

 upcurved at the end ; R *+» bent strongly toward the wing apex, producing a 

 trumpet-shaped cell 72 3,* cell 1st If 2, if present, pointed at its inner end. 



Leiponeura (genus Onnomyia) (p. 420). 



Crossvein r present or lacking; if the latter, Sc ends far beyond the origin 



of Rs; R2*3 not strongly upcurved at the end; Rt+i not bent strongly 



toward the wing apex; inner end of cell 1st M2, if present, not pointed 



AntocMni (p. 413). 



