304 Syrphidae. 



over the margin above. Femora paler, about the basal fourth of 

 anterior fernora black, hind femora quite yellow or black at the 

 very base, 



Length 7,6 to fully 9 mm. 



The larva and pupa are similar to those of nitens, likewise clothed 

 with fine spines, which are still more distinct than in nitens; there 

 are also the same bristles. The pupa has a length of 6 mm. 



This species is similar to nitens, but is as a rule smaller; when 

 the scutellum is quite yellovv-haired this distinguishes it, when not it 

 is known in the male by the larger vertex and the broader hinder 

 eye-margin without black hairs. The female is at once known by the 

 want of frontal dust spots. In bolh sexes the abdominal bands are 

 broatier, generally less undulate, the spots on second segment lying 

 nearer the hind margin and the fifth segment quite yellow with only 

 a black middle spot. 



6'. latifasciatus does not seem to be common in Denmark; Frede- 

 riksberg, Damhussø, Utterslev Mose, Ordrup Mose, Dyrehaven, Lyngby 

 Mose, Ruderhegn, Donse, Nyrup Hegn; on Lolland in Dødemose west 

 of Nysted; in Jutland at Horsens and Randers, and on Bornholm at 

 Rø. My dates are ^/e — ^^/s. It is curious that the imago is only 

 taken somewhat rarely, while the pupa is more common than most 

 other Syrjtj/m.s-pupæ; the pupa has been taken in flood refuse in 

 Ruderhegn on '^^U, developing on ^^\^ — ^^U (Kryger), and in Damhus- 

 mosen, Utterslev Mose and in Jutland at Randers, developing in April 

 and May (Schlick). A larva was taken in Ruderhegn in flood refuse 

 on ^^/3, it developed on ^^/4 (Kryger). 



Geographical distribution:— Northern and middle Europe dovvn 

 into France and probably also in Italy; towards ttie north to northern 

 Sweden; it occurs also in North America. 



17. S. corollae Fabr. 



1794. Fabr. Ent. Syst. IV, 306. 106 et 1805. Syst. Antl. 250, 8 {Scaeva). 

 — 1822. Meig. Syst. Beschr. III, 304, 46. — 1^43. Zett. Dipt. Scand. II, 

 720, 23 et 1849. VIII, 3138, 23 el 1855. XII, 4657, 23 {Scaeva). - 

 1862. Schin. F. A. I, 306. — 1901. Verr. Biit. Fl. VIII, 381, 19. - 

 1907. Kat. palåarkt. Dipt. 111, 62. — Scaeva olitoria Fall. 1817. Dipt. Suec. 

 Syrph. 43, 12. — S. lacerus Meig. 1822. Syst. Beschr. 111, 301, 41. — 

 S. fulvifrom Macq. 1827. Soc. Se. Lille 1827, 240, 24 et 1834. Suit. å 

 Buff. 1, 540, 19. — 1838. Meig. 1. c. VII, 132, 101. — 6\ crenatus Macq. 

 1827. 1. c. 243, 29 et 1834. 1. c. I, 541, 23. — 1838. Meig. 1. c. VII, 

 133, 104. — 1862. Schin. F. A. I, 312. 



Male. Vertex somewhat large, longer than Ihe eye-suture, black, 

 greyish behind ; frons and epistoma yellow, the front mouth edge and 



