220 Syrphidae. 



in the female with its characteristic spots and quite black fifth segment. 

 — In Kat. palåarkt. Dipt. quadratus Stæg. is placed as a synonym to 

 scutatus Meig. == quadratus Macq., but this is erroneous; Verrall says 

 (1. c. 280) ". . . in the Copenhagen collection the exponent of P. quadratus 

 was a female F. peltatus'^ ; how Verrall has come to this I do not 

 understand, but he must have committed some mistake, for in our 

 collection (= Stæger's collection) there were eleven specimens under 

 quadratus, two males and nine females, and these were all angustatus^ 

 except one female which was scutatus. Zetterstedt also mentions that 

 he had received the species from Stæger partly as sp. n. (II, 762), 

 partly as quadratus (VIII, 3155); also Stæger's description 1. c, shows 

 with fuU evidence that his quadratus is angustatus, but at that time 

 he had only the female. 



P. angustatus is somewhat rare in Denmark; Lersø, Ordrup Mose 

 (Stæger), Nordskoven at Jægerspris; on Langeland at Lohals (the 

 author) and in Jutland in Nørholm Skov at Varde (Kryger), at Frijsen- 

 borg and Thisted (the author). The dates are ^/e — ^^/s. 



Geographical distribution : — Northern Europe and recorded down 

 into Styria; towards the north to northern Sweden, and in Finland. 



11. P. sticticus Meig. 



1822. Meig. Syst. Beschr. III, 332,86 (Syrphns). - 1862. Schin. F. A. 

 I, 292 (Melanostoma). — 1901. Verr. Brit. FL VIII, 297, 15, fig. 256. — 

 1907. Kat. palåarkt. Dipt. III, 46. — P. spathulatits Rond. 1857. Dipt. ital. 

 Prodr. II, 121, 7. — P. compUcatus Beck. 1889. Berl. ent. Zeitschr. XXXIII, 

 172, 155. 



Male. Frons æneous, shining but dull or dullish black on the 

 upper part; epistoma bluish black, very slightly dusted, shining; it is 

 somewhat produced, a little keel-shaped with the central knob pro- 

 minent. Vertex, frons and epistoma black-haired. Occiput slightly 

 greyish pruinose, the hairs below yellow but the long hairs above all 

 black. Antennæ blackish brown, third joint inconspicuously paler 

 beneath the base. Thorax dark æneous, clothed with somewhat long, 

 yellowish brown hairs. Pleura with long, dark yellow hairs. Abdomen 

 dull black, shining at extreme base and apex, with three pairs of 

 small, æneous, a little hoary spots; the basal spots small, somewhat 

 indislinct, lying in the middle of the segment at the side margin, the 

 two other pairs somewhat subquadrate, lying at the basal corners, all 

 widely separated in the middle and confluent with the side margin; 

 fifth segment a little æneous at the basal corners. Abdomen has short 

 hairs, longer at the sides and towards the base; they are yellow on 

 the spots and at the sides, but black on all the black parts. Venter 



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