538 Syrphidae. 



with short but soinewhat erect, yellow hairs, longer than in sahulonum. 

 Scutelliim with the margin fmely serrated, it is coloured and haired 

 as thorax, at the margin the hairs a little longer. Pleura æneous with 

 somewhat longish, white hairs. Abdomen æneous, coarsely punctate, 

 not very shining except at the sides and apex; it has three pairs of 

 lunules or oblique bands as in sabulonum-, the lunules are a little 

 greyish or almost bluish white and the spaces which they cover are 

 a little impressed ; abdomen is clothed with short hairs, which are 

 black except at the base, on the lunules, at the sides and on the 

 apical part of fourth segment, where they are pale; they are longer 

 at the sides and on the apical half of fourth segment; at the basal 

 corners of abdomen they are longest. Genitalia yellow-haired. Venter 

 a little æneous, with longish, pale hairs. Legs blackish æneous, the 

 knees and the basal part of the tibiæ reddish or yellowish; the three 

 basal joints of the middle tarsi often more or less yellowish and on 

 the hind tarsi they may be pale towards the ends; hind femora con- 

 siderably thickened, with two rows of short, strong spines below on 

 the apical part, the posterior row continued to or beyond the middle, 

 the anterior row present only on the apical third or fourth; hind tibiæ 

 conspicuously dilated from near the base to the apex, and hind meta- 

 tarsi thickened, especially at the base ; the legs more long-haired than 

 in sabulonum. and rather densely haired; the hairs somewhat long on 

 all femora, on hind femora both above and below, longest below and 

 here also some bristly hairs present; the tibiæ somewhat fringed above; 

 the hairs are whitish ; at the apex of hind tibiæ on the posterior side 

 are some long, yellow, bristly hairs. Wings a little greyish or brownish 

 tinged; cubital vein curved a little down over the first posterior cell; 

 middle cross-vein very oblique, placed after the middle of the discai 

 cell. Stigma pale brown. Squamulæ and fringes whitish. Halteres 

 yellow. 



. Female. Similar; vertex and frons broad, widening downwards; 

 they are æneous, the frons more or less broadly grey pruinose along 

 the eye-margins, and sometimes also thinly on the middle; the hairs 

 pale but black across the ocelli and just above the antennæ. Third 

 antennal joint broader, almost as high as long. 



Length 6,5 — 8,5 mm. 



E. strigatus is not rare in Denmark though it can scarcely be 

 termed common: Copenhagen in gardens, Charlottenlund, Ordrup Mose, 

 Tisvilde, Lynæs, at Sorø; on Lolland at Maribo and in Kældskov and 

 Dødemose west of Nysted and here rather common; on Langeland 

 at Lohals; on Funen at Langensø; in Jutland in Hø Skov at Aarhus 

 and at Thisted. My dates are ^*^/5 — ^^/s. It occurs in fens and in 



