1)2 Oi'thiiiiliafilia brachycera. 



2. S. iridatus Scop. 



1763. Mi(sca, Scop. Eiit. carn. 340, 914. — 1855. F.ow. Verli. zool. 

 hot. Ver. Wien, V, 133. — 1903. Kat. palaarkt. Uipl. 11, 3-2. — 1842. 

 Sargtis in fuscatus, Zett. Dipt. Scand. 1, 158, 3. — 1862. Schin. F. A. 1, 21. 



Male. Eyes inetallic greenish, with an iridescent band lying al)ove 

 tiie niiddle, on the upper part of the eye, its end tlius reaehing the 

 front somewhat above tbe white spot above the antenna. Front 

 inetallic green, with a pair of white spots above the antennæ. Antonnai 

 l)lackish l)rown. Thorax golden greenish, finely yellowish pubescent. 

 Abdonien more or less copper-coloured or violet, especially towards 

 the ape.x. Venter black. Abdonien with fine, pale pnbescence. Legs 

 black or brownish black with yellow knees: feniora finely pubescent. 



Fig. 25. Wing of S. iridatus. 



tibiæ and tarsi with short, yellow pul)escence. Wings somewhat 

 t'unjigated, generally slightly lighter at the base, with a pale brownish 

 stigma and blackish brown veins. Halteres yellow. 



Female. Quite agreeing with the male, only the front is broader, 

 and at the upper corner of the eye there is some violet colour: thorax 

 has shorter and more whitish pubescence, and the abdonien is generally 

 more or (juite violet. 



Length G — 1 1 mm. 



The larva is dirty brownish or greyish bruwn ; it has a length 

 of about 10—12 nnii. 



This species very niuch resenibles cHjjrarius. but it is distinguished 

 by the wing stigma not lieing blackish and the absence of the blackish 

 brown blotch on the wing; a good character is also the higher position 

 of the band on the eye, bul this is generally not lo be seen in dried 

 specimens. — As the measuremenls show, this species, like cuprarius, 

 varias much in size; Mcigen has established a species, S.nUidux (Syst. 

 Beschr. II. lOS, i) whicli is very similar to irichitiis but smaller, and is 

 said to have no liand on the eyes. Low (Verhandl. zool. bot. Ver. WHen, 

 V, 132) expresses some doubt about this species. Zetterstedt mentions 

 the species in Dipt. Scand. I, 159, O but ibid. VIII. 204f). 6 he makes of 

 the specimens mentioned in Vol. I the new species minimus, referring 

 to nitidus some specimens which he had got, except one, from Stæger 

 under the name ,S. infnscatits var. niiiiiitiis". Zetterstedt says in the 



