302 Syrphidae. 



that Strobl and Thaihammer have not had their species correctly 

 determint'd. S. nitens is not at all similar to nitidivollis and it is 

 much more allied to the latifasciatus-coroUæ group. It is distinguished 

 not only by its outer appearance caused by its flatter, broader and 

 distinctly marginale abdomen with the undulated bands, which do not 

 reach the margin or only just at the upper corners, but besides by a 

 multitude of minute characters, as the shorter vertex and yellow frons 

 in the male, the darker antennæ with a longer third joint and the 

 arista inserted farther from the base, the short, all black hairs at the 

 margin of abdomen, the more yellow frons of the female, the markings 

 on venter and still other characters. 



S. nitens is rather rare in Denmark ; Copenhagen, Lyngby Mose, 

 Geel Skov, Ørholm, Ruderhegn, Trørød, Nyrup Hegn, Tisvilde, Jægers- 

 pris, at Sorø; in Jutland at Horsens, Laven near Silkeborg and at 

 Rebbild near Skørping, My dates are ^k—'^^is. I have taken it in 

 woods on flowers of Gompositæ. The larva I took among Aphides 

 on Prunus in a garden at Copenhagen on ^/e, one pupated on 'Vfi and 

 the imago came on ^^/e; a pupa was taken in Ruderhegn in flood 

 refuse on ^^U, it developed on ^^k (Kryger). 



Geographical distribution: — Northern and middle Europe and 

 recorded down into Styria; towards the north to northern Sweden, 

 and in Finland; it seems upon the whole to be a rare species. 



16. S. latifasciatus Macq. 



1827. Macq. Soc. Se. Lille, 1827, 242, 28 et 1834. Sult. å Buff. I, 541, 

 32. — 1838. Meig. Syst. Beschr. VII, 132, 203. — 1901. Verr. Brit. Fl. 

 VIII, 371, 15, fig. 292. — 1907. Kat. palåarkt. Dipt. III, 66. — Scaeva 

 abbreviata Zett. 1849. Dipt. Scand. VIII, 3136, 13—14. — Syrphus affinis 

 Loew, 1840. Programm Posen, 35, 11 et Isis 1840, 571, 11. — Syrphus 

 excisus p. p. 1862. Schin. F. A. I, 311. 



Male. Vertex large, considerably longer than the eye-suture but 

 not specially narrow; it is black, yellowish pruinose behind; frons and 

 epistoma yellow, mouth edge darkened and the lower lateral parts of 

 epistoma black; the central knob may be darkened. Jowls black, 

 greyish pruinose. Vertex and frons black-haired, the former with 

 yellow hairs behind; epistoma with yellow hairs, at the sides above 

 are black hairs. Occiput grey pruinose, the hairs pale yellow below, 

 darker upwards, but there are no black hairs. Occiput is rather much 

 puffed out above so that the hinder eye-margin is broad. Eyes bare. 

 Antennæ blackish or brown, paler beneath, third joint oval; arista 

 short, shorter than the antennæ. Thorax æneous, a liltle greenish, 

 not nmch shining, generally with three more or less visible, duller 



