148 



Syrphidae. 



small, black ring below the middle, tarsi yellow with the last joint 

 black, front metatarsus a little darkened above and hind metatarsus 

 blackish. Legs alraost all yellow-haired; only the hairs behind the 

 front femora and towards the end of middle femora more or less 

 black, and sometimes the short hairs on the anterior side of hind 

 tibiæ black; hind femora distinctly black setulose below and hind 

 metatarsus slightly thickened. Wings yellowish tinged most towards 

 the base and anterior part; upper angle at the upper marginal cross- 

 vein acute. Squamulæ white with a white fringe. Halteres pale yel- 

 lowish, sometimes with the knob slightly darkened. 



Female. Frons somewhat broad, slightly widening downwards, 

 with narrow lateral but no middle channel; it is yellow-haired but 

 with dark hairs at the ocelli, sometimes black-haired. Antennæ with 



Fig. 72. Antenna of C. pagana 9, from the inside. X 75. 



the third joint very large. Thorax with short, decumbent pubescence, 

 varying as in the male from yellow to black. Abdomen shining with 

 yellow, longish, erect hairs at the sides, especially towards base; in 

 the middle the hairs are short and depressed, and often more or less 

 dark on the hind parts of second and third segments and in dark 

 specimens they may be black on fourth and fifth segments. Legs 

 chiefly as in the male or slightly paler, sometimes the anterior tibiæ 

 quite yellow; hind femora only slightly setulose below the apex. The 

 wings may be more distinctly tinged. 



Length 6—8,5 mm. 



As Loew correctly remarks the eyes in the male of this species 

 show some scattered hairs; they are more distinct in some specimens 

 than in others. 



C. pagana is common in Denmark; Amager, Ordrup Mose, Erme- 

 lund. Dyrehaven, Lyngby Mose, Hareskov, Geel Skov, Hillerød, Bose- 



