134 BIBIONID^E. 



FAMILY IV. BIBIONIDJE. 



Hirteides, Bilb. ; Zett. Bibionites, Newm. Bibionides, Westw. Tipu- 

 larioe muscaformes p., Meig. Scatopsides, Zett. 



Corpus magnum aut mediocre. Ocelli tres. ProtJiorax conspicum. 



Mesothoracis scutum indivisum. Ala sat lalse ; areola discalis nulla. 



Body large, of middling or of very small size. Ocelli three. Pro- 

 thorax conspicuous. Scutum of the mesothorax undivided. Wings mo- 

 derately broad, with no discal areolet. 



The Scatopsides are united to the Bibionida, and this family 

 will thus contain two distinct groups, each of which contains two 

 British genera. 



rnine-jointed ........ BIBIO. 



cylindrical j ~ > DlLOPUUS . 



leleven-jointed. Palpi 



. 

 Antennae 4 (j er y Sn0 rt . SCATOPSE. 



"-capitate ............... ASPISTES. 



Genus I. BIBIO. 



BIBIO, Geoifr. H. N. Ins. (1764) ; Latr. ; Oliv. ; Meig. ; Mcq. ; Curt, ; 

 Loew ; Westw. Tipula p., L. ; F. Sp. Ins. ; D. G. ; Gmel. ; Schr. ; 

 Panz. Hirtea p., F. E. S. ; Meig. Kl. Zw. ; Zett. 



Corpus validum, elongatum, magnum aut mediocre. Ocelli trcs. 

 Labrum breve, trigonum. Lingua lanceolata. Labium bilobatum, 

 hirtissimum. Palpi 5-articulati, pilosi ; articulus primus brevissimus ; 

 secundus linearis, tertio longior ; tertius et quartus subclavati ; quar- 

 tus tertio brevior ; quintus linearis, quarto longior et multo gracilior. 

 Antennae 9-articulatae, breves, submoniliformes, porrectse; articuh 

 primus et secundus sublineares, pilosi; tertius et sequentes transver- 

 si ; nonus rotundatus. Thorax subovatus, valde convexus. Alae sat 

 latae, non elongates. Halteres longi. Abdomen 9-annulatum, tliorace 

 multo longiiis. Pedes validi ; femora et tibiss canaliculata ; tibia? 

 calcaribus duabus apicalibus, antica? spina longa robusta apicali ; 

 tarsi non elongati. Mas. Caput latum, rotundatum. Oculi maximi, 

 supra conjuncti. Abdomen apice obtusum. Tibia? postica? clavata?. 

 Fcem. Caput ovatum, angustum. Ocelli parvi, remoti. Abdomen 

 apice acuminatum. 



Body stout, elongated, large or of middle size. Ocelli three, approx- 

 imate. Labrum short, triangular, membranous and pubescent at the 

 apex. Lingua lanceolate, dilated at the base, membranous and pu- 

 bescent at the apex, as long as the labrum. Labium shorter than the 

 head, membranous, bilobed, very hairy. Palpi five-jointed, pilose; 

 first joint very short ; second linear, longer than the third ; third and 



