162 



STRATIOMYID^ 



SARGINiE. 



Colour brilliant metallic green in all the European species. 



Abdomen with only five or six obvious segments (fig. 134.) Discal 

 cross-vein connecting the discal cell with the prsef urea ; discal cell emitting 

 three veinlets and not emitting the upper branch of the postical vein, 

 because the lower cross- vein is present; thoracal squamse developed. 

 Scutellum unarmed in all European genera. Antennse with a long arista 

 in all European genera. 



Fig. 13i.—Sargus cuprarins S- x 5J. 



Head semicircular ; neck elongated and very fragile in dry specimens (especially 

 in Sargios). Eyes large, sometimes not touching in the male. Antennae in European 

 genera with a long thin arista, which is inserted at the extreme base of the apical 

 annulation of the fiagellum and which consequently appears to be subapical. 



Thorax unarmed, but with moderately dense though inconspicuous pubescence ; 

 metapleurse with rather long shelter hairs. Scutellum Avithout any marginal spines 

 in the European genera. 



Abdomen with only five or six obvious segments, long and parallel-sided in 

 Sargus, but short and rounded in Microchrysa. 



Legs simple in European genera • tibice without any spurs. 



Wings (fig. 134) witii the costal vein extended obviously beyond the end of 

 the lower branch of the cubital fork, but not reaching to the wing-tip ; radial vein 

 rather short, slightly curved vipwards, and ending near the subcostal, and its 

 divergence from the cubital vein occurring some distance after the discal cross-vein, 

 so that the discal cross-vein connects the discal cell with the prsefurca and the 

 radial vein seems to emit two short forks to the costal vein ; cubital vein forked, 

 the upper branch being short and only about a quarter as long as the lower branch, 

 and both branches ending in the wingmargin before the tip of the wing ; discal cell 

 commencing opposite to or only just after the origin of the prajfurca and connected 



