198 



Syrphidae. 



the two basal joints of middle tarsi more or less yellowish or brownish. 



Front tibiæ almost not dilated towards apex, the apex white; front 



tarsi with the two basal joints strongly dilated, forming together an 

 oval disc, the first joint about three times as long as 

 second, which latter is a little narrower; the disc is 

 white with four black spots below, two on each joint, 

 and some dark markings ; the three apical joints blackish 

 brown. Front and middle trochanters with a large 

 brush of short, black spines ; femora with long hairs in 

 the usual way, longest on the antero-ventral side of 

 hind femora; they are mainly pale, only black towards 

 the apex behind front femora; middle femora with 

 some short bristles on the antero-dorsal side in the 

 1^ apical half; tibiæ with short, pale hairs, anterior tibiæ 



with long, black hairs on the posterior side in the 

 apical half, somewhat few on the middle tibiæ, hind 

 tibiæ with a few long, black or yellow hairs on the 

 antero-dorsal side in the middle; front metatarsus with 

 a black ciliation at the posterior margin; hind meta- 

 tarsus strongly dilated with the ventral side straight, 

 the dorsai arched. Wings more or less yellowish or 

 slightly brownish tinged, sometimes almost hyaline. 

 Squamulæ whitish to brownish, with a darker margin 

 and a yellow fringe. Halteres whitish or yellow. 



Female. Frons yellow pruinose like epistoma, with 

 Fig. 99. yellow hairs, longest and black in front of the ocelli, 



P. manieatus (J, gometimes almost all black. Thorax duller than in the 



ng ron eg ^^^\q j-j^g sides and a narrow stripe at each side paler 



from below. . '■ . p 



^ 2Q prumose, and between the latter generally a pair of 



faint stripes, but the stripes somewhat varying; thorax 



and scutellum all yellow-haired and shorter-haired than in the male. 



Abdomen more shining than in the male, the spots less elongated, 



especially second and third pairs; fifth segment with distinct spots. 



Legs simple, anterior tarsi blackish, hind metatarsi slightly thickened. 



Length 8—10 mm. 



P. manieatus is common in Denmark ; Amager, Vesterfælled, Lersø, 

 Damhussø, Ordrup Mose, Ermelund, Dyrehaven, Lyngby Mose, Birke- 

 rød, Tyvekrog, Trørød, Nyraad near Vordingborg, Frederikssund, Eg- 

 holm at Skelskør; on Lolland at Maribo, Strandby and in Kældskov 

 and Merrits Skov; on Fejø; on Langeland at Lohals; in Jutland at 

 Horsens, Gjerlev near Randers Fjord, Frederikshavn and on Læsø, 

 finally on Bornholm in Almindingen. My dates are ^^/s — ^"/o. It occurs 



