Syrphus 295 



sides, while Zetterstedt says about thorax "nitido" and uses this 

 character as distinguish ingagainst lineola with "thorace subopaco", 

 and Verrall compares the species with vittiger without speaking of a 

 duller thorax. 



11. S. lineola Zett. 



1843. Zett. Dipt. Scand. II, 714, 16 et 1849. VIII, 3137, 16 et 1859. 

 XIII, 5093, 16 {Scaeva). — 1862. Schin. F. A. I, 309. — 1901. Verr. Brit. 

 Fl. VIII, 359, 9. - 1907. Kat. palåaikt. Dipt. III, 66. 



This species is similar to amiulatus. Male. Epistorna broader, a 

 little increasing in breadth downwards, it has the black middle stripe 

 narrower and not reaching up to the antennæ. Antennæ black. 

 Thorax dull, a little shining at the sides. Abdomen as in annulatus, 

 venter paler, the black parts only forming triangular middle spots, 

 but sometimes the venter more darkened. Legs much blacker, anterior 

 femora black with the apical part yellow, anterior tibiæ yellow with 

 faint dark rings below the middle, tarsi black, metatarsus a little paler; 

 hind legs quite black, only the knees indistinctly pale. Legs haired 

 about as in annulatus but the apical part of the anterior femora and 

 the middle tibiæ have the short hairs almost all black, and they are 

 also more numerous behind on the front tibiæ. Stigma brown to 

 blackish. 



Female. Quite similar to the male, with the usual differences, 

 and thus also to the female of annulatus, but with the same disting- 

 uishing characters as given for the male; usually the hind femora not 

 yellow at the base. 



Length 8 to almost 10 mm. 



This species may be known from annulatus by the black antennæ, 

 narrower and abbreviated epistomal stripe and dark anterior tarsi; 

 also is the epistoma broader, whlch is the most obvious in the male. 



S. iineola is like the preceding species rare in Denmark; Ordrup 

 Mose, Dyrehaven. Geel Skov, Donse, Hillerød, Tyvekrog, Nyrup Flegn, 

 Tisvilde, Nordskoven at Jægerspris; on Lolland at Maribo; on Funen 

 at Strib; in Jutland at Silkeborg, Laurberg south of Randers and 

 Rebbild near Skørping. My dates are ^-'Vr, — ^/g. 



Geographical distribution: — Northern and middle Europe down 

 into Austria, Bohemia and Styria; towards the north to northern 

 Sweden, and in Finland. 



12. S. grossulariae Meig. 



1822. Meig. Syst. Beschr. 111, 306, 48. — 1843. Zett. Dipt. Scand. II, 

 706, 7 et 1859. XIII, 5091, 7 {Scaeva). — 1862. Schin. F. A. 1, 310. — 



