270 TIPULID.^. 



Genus I. TRICHOCERA. 



Trichocera, Meig. Zw. i. 211 (1818); Mcq. ; Westw.; Curt.; Zett. ; 

 Gim. ; Stog. ; Eoss. (V.) Tlpula p., L. ; D. G. ; Geoff. ; F. ; Schr. ; 

 Gmel. Limonia p., Latr. 



Corpus elongatum, fere nudum, mediocre aut parvum. Caput parvum, 

 rotundatum ; frons lata. Oculi rotundi, remoti. Proboscis brevis. 

 Palpi 4-avticulati, exserti, cylindrici, incurvi ; articuli secuudus et ter- 

 tius sequales ; primus brevior ; quartus longior, apud medium iuflexus. 

 Anteniice 14-articulatse?, porrectre, setiformes, thorace longiores ; 

 articuli primus et secundus validi, breviusculi ; primus cylindricus ; 

 secuudus cyathiformis ; tertius et sequeutes oblougi, vix pubescentes. 

 Prothorax brevis. Thorax valde convexus. Scutellum parvum. Alae 

 sat latcC, incumbentes, nudcC ; stigma nullum. Abdomen gracile, 

 subliueare, segmentis octo. Pedes longiusculi, graclles, nudi, in- 

 ermes ; coxse breves ; tibife vix calcaratse. Mas. Abdomen apice 

 obtusum, forcipe brevi. Foem. Abdomen stylis duabus analibus ar- 

 cuatis divergentibus. 



Body elongated, dull, nearly bare, of moderate or rather small size, 

 generally cinereous or brown. Head small, rounded, not sessile, lower 

 than the thorax. Pront broad. Eyes round, remote. Proboscis short. 

 Pal]3i four-jointed, exserted, curved downward, cylindrical ; second and 

 third joints a little longer than the first ; fourth still longer, bent in 

 the middle, so as apparently to consist of two joints. Antenna? fourteen- 

 jointed ?, porrect, setiform, a little longer than the head and the thorax ; 

 first and second joints ratlier short and stout ; first cylindrical ; second 

 cyathiform ; third and following joints oblong, very minutely pubescent. 

 Prothorax short. Thorax very convex, almost gibbous in front, with 

 an angular transverse suture. Scutellum small. Metathorax semicir- 

 cular, slightly depressed. Wings rather broad, incumbent, bare ; stigma 

 obsolete ; mediastinal vein ending at four-fifths of the length of the 

 wing; subcostal ending at hardly in front of the tip; radial and cubital 

 springing from a common petiole, which proceeds from the subcostal 

 at two-fifths of the length ; radial forked before one-third of its length ; 

 its fore fork connected by a short transverse veinlet with tlie subcostal ; 

 cubital connected close to its base by a transverse veinlet with the first 

 externo-medial ; first and third externo-medial veins springing from a 

 common petiole at a little before two-thirds of the length ; first externo- 

 medial forked at hardly beyond half its length, connected again with 

 the third externo-medial by a veinlet whose angle emits the second ex- 

 terno-medial ; subanal forming towards its tip an angle, and there con- 

 nected by a veinlet with the third externo-medial ; anal and axillary 

 veins complete, the latter very short ; discal areolct pentagonal, llal- 

 teres very long. Abdomen with eight segments, slender, nearly linear, 

 slightly depressed, minutely pubescent. Legs elongated, slender, bare, 

 unarmed ; coxse not elongated ; tibiaj hardly armed with apical spurs. 



