FAMILY TIPULID-E THE CRANTE FIJES 41 



18. Wings with macrotrichia in apical cells. ..Tipula: Trichotipula Alexander 

 Wing-s with cells glabrous Tipula: Tipula Linnaeus 



19. Wings with tip of Ri+; atrophied, giving the appearance of a long 



fusion back from margin of veins R, and anterior branch of Rs; 



free tip of Sc.. preserved (21, 22, 23) (Cylindrotomin^) 20 



Wings sometimes with tip of R,.; atrophied (some Limoniini) but not 

 giving the appearance of a long fusion backward from margin of 

 veins R, and anterior branch of Rs; free tip of Sc2 preserved in 

 many species of tribe Limoniini, lacking in other tribes in this 

 fauna (24 to 44) (Limoniinie) 24 



CYLINDROTOMIN^: GENERA 



20. Head and intervals of mesonotal praescutum with numerous deep 



punctures; a deep median groove on prtescutum. . . . Triogma Schiner 

 Head and intervals of mesonotal praescutum smooth; no median 

 praescutal groove 21 



21. Three branches of Radius reach the margin, Ri« being presei'ved as 



a distinct element Phaiacrocera Schiner 



Two branches of Radius reach the margin, Ri^:: being entirely 

 atrophied, giving the appearance of a long backward fusion of 

 veins R, and anterior branch of Rs (21-23) 22 



22. Four branches of Media reach the margin (21) . .Cylindrotoma Macquart 

 Three branches of Media reach the margin 23 



23. Wings with crossvein r-m present; outer end of cell 1st Mj almost 



always closed by a single transverse vein, cell M, being present, 

 sessile to short-petiolate; cells 2nd M- and Ma confluent by atrophy 

 01' partial atrophy of distal section of vein M^; antennae nearly 

 simple, the lower face of individual segments not produced (22, 



23 ) Phalacrocera Schiner 



Wings with crossvein r-m usually shortened to quite obliterated by 

 the approximation or fusion of veins R4+.-, and Mi+;.; outer end of 

 cell 1st Ms closed by two transverse veins, these being M and the 

 basal section of Ms; cell M, lacking, cells 2nd M^. and M3 distinct; 

 antennae strongly nodulose, especially in male, the individual flagel- 

 lar segments nearly cordate Liogma Osten Sacken 



TRIBES OF LLMONIIN^ 



24. Eyes hairy; wings with vein Sci very long, Sc? lying basad of origin 



of Rs (2, 30). (Pediciini) ". . . 41 



Eyes glabrous; wings with Sci short or of moderate length, when 

 long (some Eriopterini), Sc2 lying distad of origin of Rs; where 

 Sc2 lies basad of origin of Rs (some Limoniini, Eriopterini), the 

 entire vein Sc is shortened 25 



25. Wings with free tip of Sca often present; veins Rj and R-, fused to 



margin, only two branches of Rs being present; antennae usually 

 with 14 (Limoniaria) or 16 segments; (4-10, 24-29) (Limoniini).. 27 

 Wings with free tip of Sc- atrophied; veins R4 and Rr, separate, the 

 former usually transferred to the upper branch, R2+3, to form a 

 distinct element R;+s.4; usually with three branches of Rs present 

 (except in Atarba, Elephantomyia, Styringomyia, Teucholabis, Go- 

 nomyia and Toxorhina, where Rj is captured by R^^s, as above); 

 antenna; usually with 16 segments; (31-44) 26 



