Syrphus. 285 



sides. Occiput greyish pruinose, sornewhat æneous and shining above, 

 the hairs yellovv, with some few black above. Eyes pale brownish- 

 hairy, but the hairs rather short. Antennæ black, third joint very 

 slightly pale just beneath the base; the third joint short ovate; 

 arista as long as the antennæ. Thorax æneous, not much shining, 

 the two greyish lines on the middle just visible; it is clothed with 

 yellow hairs. Scutellum yellow or slightly brownish, black-haired. 

 Pleura yellow-haired. Abdomen black, sornewhat shining, with three 

 pairs of yellow, sornewhat semicircular spots; the first pair lie on the 

 middle of the segment, they are well separated and less semicircular; 

 the second and third pairs lie near the front margin of the segments, 

 they have a straight or very slightly concave anterior margin and a 

 convex hind margin, and they go very near to each other in the 

 middle, or (in one of my specimens) really touch at the upper inner 

 corner; they go all over the side-margin; the fourth segment has a 

 broad, the fifth a narrow, yellow hind margin, the latter also small 

 spots at the basal corners. The hairs nearly quite follow the ground 

 colour, but are pale at the base; at the sides they are black unless 

 at the base and on the bands. Venter coloured somewhat like dorsura, 

 but pale at the base ; it has longish, pale hairs. Legs blackish, anterior 

 femora with apex or about the apical third yellow, anterior tibiæ yel- 

 lowish with more or less distinct, blackish rings about the middle, 

 and browned towards the end; the hind knees may be somewhat 

 pale. The hairs on femora yellow, but black towards the apex of 

 the anterior femora : the short hairs on hind femora and on the tibiæ 

 black, on front tibiæ partly pale. Wings a little tinged, Squamulæ 

 whitish yellow, Halteres yellow. 



Length about 9,6 mm. 



This species is distinguished from Innulatus by the not isolated 

 abdominal spots, and from venustus by the blacker antennæ and black- 

 haired scutellum; from both the short-haired eyes distinguish it. 



S. macularis is rare in Denmark, I possess only two specimens, 

 both females, taken in Tyvekrogen on ^^k 1908 (the author); they 

 were taken on Gompositæ, I believe on Taraxacum. 



Geographical distribution:— Northern and middle Europe down 

 into Austria and Bohemia; towards the north to northern Sweden. 

 It is also recorded from North America. 



Remarks; This species is not well known; Verrall thinks that the 

 specimens mentioned by Zetterstedt in VIII, where the author says "Oculi 

 tenuissime hirti" and mentions some variations, f. inst. with the antennæ 

 being pale beneath, may belong to his punctulatus, and then only 

 the single male specimen described by Zetterstedt in II should be 



