134 BIBIONID^E. 



FAMILY IV. BIBIONIM. 



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

 larice muscceformes p., Meig. Scatopsides, Zett. 



Corpus magnum aut mediocre. Ocelli tres. Prothorax conspicuus. 



Mesothoracis scutum indivisum. Alee sat latae ; 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 areokt. 



The Scatopsides are united to the Bibionida, and this family 

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

 British genera. 



fnine-jointed BIBIO. 



.subcylindrical j , long DILOPHUS. 



Leleven-jointed. Palpi < 

 Antenna 4 ^ yer y ^Q^ . SCATOPSE. 



^capitate ASPISTES. 



Genus I. BIBIO. 



BIBIO, Geoffr. 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 tres. 

 Labrum breve, trigonum. Lingua lanceolata. Labium bilobatum, 

 hirtissiuium. Palpi 5-articulati, pilosi ; articulus primus brevissiimts ; 

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

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

 Antennae 9-articulatae, breves, submoniliformes, porrectae ; articuli 

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

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

 latae, non elongatae. Halteres longi. Abdomen 9-annulatum, thorace 

 multo longius. Pedes validi ; femora et tibiae canaliculata ; tibiae 

 calcaribus duabus apicalibus, anticae spina longa robusta apicali ; 

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

 supra conjuncti. Abdomen apice obtusura. Tibiaa posticae clavatae. 

 Teem. Caput ovatum, angustum. OceUi 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 



