TOXOPHORIN.E 



509 



TOXOPHORINiE. 



Prosfurca ending (as in Bombylin^) almost opposite the base of the 

 discal cell. Antennae usually very long, approximated at the base. 

 Thorax usually very much humped, with the head and abdomen 

 remarkably depressed; thorax (except in Edimus) with strong bristles 

 on the disc or sides. Abdomen long and tubular. 



Head moderately transverse but rounded behind the eyes, as wide as or rather 

 wider than the thorax, usually depressed and almost at a right angle with the 

 equally depressed abdomen. Face usually produced over the long and narrow 

 mouth-opening. Ocellar space with a pair of sti'ong bristles in Toxophora^ but 

 ordinarily the frons with only the usual tuft of pubescence. Occiput moi-e or less 

 inflated, and without any occipital or postocular l:)ristles (except some strong 

 bristles in Lepidophora which are placed quite out on the back of the head) ; ocelli 

 distinct. Proboscis usually long and thin, though hidden in the long mouth-opening 

 in Tmnomyza, short and thick in CyUenia, and not very long in Lepidophyra. Palpi 

 very long and thin in Toxopihora, but short in Cyllenia, Amictus, and To7namyza. 

 Eyes of the male touching or closely approximated and the front facets sometimes 

 rather enlarged, but the eyes have no indentation at the middle of the hindmargin. 

 AntenuEe porrect, closely approximated at the base, usually very long, but only as 

 long as the head in Eclmms and short in Tomomyza ; basal joint usually very 

 long and thin (much longer than the head in Toxophora) ; in Lepidophora the 

 antennae bear plume-like scales, especially on the third joint. 



Thorax so much humped, and the head and abdomen (except in Thevenetimyia) 

 each so much bent down that they are almost at right angles to one another 

 (tig. 294) ; prothoracic plates so much developed in Toxophora and Lepidophm-a 



Fig. 294. — Toxophora maculata. 



as to meet dorsally and form a sort of shield (as in Phtlopotince) between the 

 mesonotum and the head, and this shield bears several strong bristles, which in 

 Toxophora are curved ; mesonotum with strong prsesutural and (except in Eclimtis, 

 Thevenetimyia, etc.) postalar bristles, besides more or less distinct dorso-central 

 bristles. Pubescence in Toxophora and Lepidophora mainly scaly. Scutellum 

 rather large, and in Toxophora^ etc., with strong marginal bristles ; in Toxophon^a 

 and Lepidophora the disc of the scutellum forms a flattened arch right on to the 

 abdomen (as in Systropina'). 



Abdomen tubular and elongate, sometimes {Edimus, Thevenetimyia, and to a 

 certain extent Lepidophora and Amictus) very elongate and narrow, drooping from 

 the thorax (except in Edimus, etc.), and sometimes {Amictus and Cyllenia) bearing 



