132 



Syrphidae. 



1, C. maculata Fall. 



1817. Fall. Dipt. Suec. Syrph. 52, 6 (Eristalis). — 1822. Meig. Syst. 

 Beschr. III, 295, 34 (Syrphus). — 1843. Zett. Dipt. Scand. II, 780, 4 

 {Eristalis). — Loew, Verh. zool. bot. Gesell. Wien, Vil, 616, 27. — 1862. 

 Schin. F. A. I, 278. — 1894. Beck. Nov. Aet. Leop. Garol. Akad. LXII, 366, 

 29, Fig. 158. — 1901. Verr. Brit. Fl. VIII, 212, 1, figs. 212, 214—216. — 

 1907. Kat. palåarkt. Dipt. III, 32. 



Male. Eyes bare, the suture quile short. Frons distinctly yel- 

 lowish grey pruinose, but with an elevated, shining triangle and this 

 with a longitudinal furrow. Vertex and frons black-haired, the middle 

 frontal triangle bare. Epistoma strongly hol- 

 lowed below the antennæ, very produced but 

 slightly descending; the central knob and upper 

 mouth edge united ; the epistoma greyish yellow 

 pruinose, most below the antennæ, the pro- 

 truding knob shining. Eye-margins rather broad, 

 densely yellowish pruinose, with dark hairs, 

 Occiput black, grey pruinose along the eye- 

 margin, with yellow hairs which are long above 

 and below, short in the middle and here partly 

 dark; besides there are some long, black hairs 

 above. Antennæ orange red, the basal joints 

 darker, third joint about circular, but higher 

 than long; arista brown, paler at the base, apparently bare. Thorax 

 black, somewhat shining, clothed with short, somewhat decumbent 

 yellow hairs; black scutellar marginal bristles short; the downwards 



Fig. 56. Head of 

 C. maculata d". 



Fig. 57. Antenna of C. maculata d", from the outside. X 75. 



turned fringe below the margin of scutellum short and inconspicuous. 

 Pleura greyish pruinose, with longish hairs. Abdomen duU black, with 

 a pair of grey, subquadrate spots on second, third and fourth segments 

 towards the anterior margin; it is clothed with shortish pubescence, 

 yellow on the grey spots, black on the black parts; it is longer on 

 the sides towards the base. Venter black, somewhat shining, with 



•1. 



J 



