Syrphus. 323 



Ørholm, Hillerød, Tyvekrog, Nyraad near Vordingborg, Faxe Lade- 

 plads; on Langeland at Lohals; on Funen at Middelfart; in Jutland 

 at Horsens, Silkeborg, Hald near Viborg and Sæby. My dates are 

 10/5 — 23/9_ j|- occurs on Umbelliferæ and other flowers in woods and 

 thickets; I have often seen the males hovering beautifuUy over roads 

 in woods on somewhat sunny piaces, about ten teet from the ground. 

 Geographical distribution: — Europe down into Italy; towards the 

 north to southern Lapland. 



25. S. auricoUis Meig. 



1822. Meig. Syst. Beschr. 111, 318,64. — 1843. Zett. Dipt. Scand. II, 

 743, 46 (Scaeva). — 1862. Schin. F. A. 1, 311. — 1901. Verr. Brit. Fl. 

 VIII, 397, 25, fig. 303. — 1907. Kat. palåarkt. Dipt. III, 59. — Scaeva umhella- 

 tarum p.p. 1817. Fall. Dipt. Suec. Syrph. 44, 15. — Sijrphiis decorus Meig. 

 1822. 1. c. III, 319,66. — 1862. Schin. F. A. I, 308. — S. Iris Meig. 1822. 

 1. c. III, 320, 67. — Scaeva Iris 1843. Zett. Dipt. Scand. II, 761. — S. modestus 

 Meig. 1822. 1. c. III, 323, 72. — 1862. Schin. F. A. I, 308 et 311. — 

 S. macilentus Meig. 1838. 1. c. VII, 135,109. — Scaeva maculicornis Zett. 

 1843. 1. c. II, 736, 38 et 1849. VIII, 3142, 38 et 1859. XIII, 5098, 38. — 

 Syrphus maculicornis 1862. Schin. F. A. I, 308. — Scaeva cinctipes Zett. 

 1859. 1. c. XIII, 6000, 46—47. — 1860. Malm. K. V. och V. Samh. Gote- 

 borg Handl. VII, 41. 



Male. Vertex elongate triangular; frons yellowish grey or more 

 grey pruinose, sometimes a little æneous, above the antennæ a black, 

 shining lunule with an orange lunule beneath; epistoma yellow, some- 

 times rather dark, all yellow or greyish yellow pruinose, the central 

 knob brownish or blackish, somewhat shining; mouth edge and lower 

 side corners more or less but indifmitely blackish. Jowls yellow or 

 more or less grey. Vertex and frons black-haired; epistoma with black, 

 downwards yellow hairs. Occiput yellowish grey pruinose, the hairs 

 whitish below, yellow upwards; above a row of some dark, over- 

 hanging hairs. Eyes bare. Antennæ yellowish red or brown, third 

 joint black above; the third joint is oval; arista fuUy as long at the 

 antennæ, bare. Thorax greenish æneous, brightly shining, sometimes 

 somewhat purplish ; it is clothed with yellow hairs, longest behind, 

 Scutellum yellow, a little æneous, with long, black hairs. Abdomen 

 long and narrow, parallel-sided, generally narrower than thorax, some- 

 times of the same breadth; it is duil black, a little shining at base 

 and apex; there are three pairs of yellow spots {maculicornis), or the 

 spots on third and fourth segments connected in front to deeply in- 

 cised bands (auricolUs) ; the spots on second segment are oblique, 

 pyriform; they begin near the lower corner and stretch forwards and 

 inwards, at the same time being broader, ending roundly about in the 



21* 



