320 Syrphidae. 



paler than in the male. anterior legs quite yellow and hind femora 

 with a broad, blackish ring at or near the apex. 



Length 9 — 10,5 mm. 



The puparium is whitish, marbled with greyish brown, especially 

 at the sides and forming triangles on the anterior part of the dorsum ; 

 also the ventral side is marbled, but along the sides is a white, 

 undulated line; it is much attenuated behind and the attenuation is 

 more sudden than in halteatus; the posterior spiracular process not 

 long, yellow, cleft at the apex; the length is 6 mm. 



S. cinctellus is not rare in Denmark, but it does not belong to 

 the most common species ; Charlottenlund, Ermelund, Bagsvær, Geel 

 Skov, Ørholm, Ruderhegn, Donse, Tyvekrog, Tisvilde, Nyraad near 

 Vordingborg ; on Lolland in Egholm Skov and Dødemose west of Ny- 

 sted; on Langeland at Lohals; on Funen; in .Jutland in Greisdal and 

 Højenbæk Dal at Vejle, at Horsens, Silkeborg. Frijsenborg and Rebbild 

 near Skørping, and on Bornholm at Rønne and Læsaa. My dates 

 are "'le — ^^h. It occurs in woods and thickets on leaves and flowers; 

 I took a pupa in Charlottenlund on the stem of a tree on ^Vt, it 

 developed soon after. — I possess a male specimen from Bornholm 

 being in all respects S. cinctellus but with the spot above the antennæ 

 yellow; the specimen belongs to the most pale-legged. 



Geographical distribution: — Northern and central Europe down 

 into Austria and Styria, and also recorded from Corsica and Spain; 

 towards the north to northern Sweden, and in Finland. 



24. S. cinctus Fall. 



1817. Fall. Dipt. Suec. Svrph. 45, 18 {Scaeva). — 1822. Meig. Svst. 

 Beschr. III, 318, 65. — 1843. Zett. Dipt. Scand. II, 741, 44 et 1849. VIII, 

 3143, 44 et 1859. XIII, 5099, 44 {Scaeva). — 1862. Schin. F. A. I, 312. 

 — 1901. Verr. Brit. FL VIII, 394, 24. — 1907. Kat. palåarkt. Dipt. III. 

 62. — S. placidus Meig. 1822. Syst. Beschr. III. 322, 70. — 1862. Schin. 

 F. A. I, 312. 



This species is rather like cinctellus but is smaller, especially 

 shorter. Male. Vertex more elongate than in cinctellus and frons and 

 epistoma narrower, less than one third of the breadth of the head, 

 the central knob not elongate as in cinctellus. Frons either quite 

 yellow, or it has a black lunule, tridentate in front, above the antennæ, 

 but this lunule has an orange lunule beneath not found in cinctellus; 

 the frons may also be greyish pruinose above; epistoma yellow, yel- 

 lowish white pruinose, the knob bare; the epistoma may be more or 

 less darkened about the mouth edge and on the lower lateral parts. 

 Jowls yellow or grey and in accordance with the narrow epistoma 



