Stratiomyiiilae. 61 



Tahle of Sjiecies. 



1. Legs cliiefly blackish; front narrow, the white spots above 



the antennæ narrowly separated in the middle 2. 



— Legs chiefly yellowish; front rather broad, the whitish spots 



above the antennæ widely separated in the middle 3. flavipes. 



2. Wings with a distinct dark blotch from the stigma down- 



wards 1 . cuprarius. 



— Wings without any dark blotch 2. iridatus. 



1. S. cuprarius L. 



1761. 3Iusca, Linn. Fn. Suec. 1853. — 1842. Zett. Dipt. Scand. 1. 157. 

 1. — 1855. Low, Verh. Zool. bot. Ver. Wien. V. 131. — 1862. Schin. F. A. 

 1, 21. — Ut03. Kat. palaarkt. Dipt. II, 30. 



Male. Eyes metallic greenish witii an iridescent band in the 

 middle, llie inner end of which is going ju.st to the white spot on 

 the front. Front metallic green, above the antennæ a pair of white 

 spots. Antennæ blackish brovvn. Thorax golden green, finely pale 

 haired. Abdomen generally metallic green at the base. towards the 

 apex being violet or copper-coloured. Venter greenish black. Abdomen 

 finely, chiefly pale pubescent. Legs black or brownish black; the 

 knees yellowish: the base of the posterior metatarsi generally more or 

 less yellowish. Feniora finely pubescent, tibiæ and tarsi densely 

 clotlied with siiort, yellow pubescence. Wings slightly yellowish at 

 the base, at the apical half fumigated, with a blackish stigma and a 

 distinct blackish fumigation reaching from the stigma downwards; 

 the veins blackish brown. Halteres yellow. 



Female. With exception of the broader front the female agrees 

 quite with the male, also in the coloration of the eyes but the band 

 is lying a little higher; the thorax has a shorter and more whitish 

 pubescence, and abdomen is generally more violet. 



Length 6 — 10,6 mm. 



The larva is dirty whitish, it has a length of about 9— 10 mm. 



As the measurements show the species may very much in size, 

 that is to say there may occur exceptionally small specimens. Zetter- 

 stedt has established a species, S. niibeciilosus, in which the base of 

 the hind tarsi should be quite dark, without any lighter colour, and 

 for this species a smaller size was given, but the character is not 

 valid, as cuprarius may have sometimes quite dark hind metatarsi 

 and tilis may be found both in small and in larger specimens. 



S. cuprarius is very common and known from many localities 

 all over Denmark; it is very frequent in gardens. My dates are ^^/c — ^'/s. 



Geograpical distribution : — Most parts of Europe, towards north 

 to the nortiiernmost Scandinavia; it also occurs in Nortii America in 

 Canada and New Jersey. 



