Allophora. 93 



Syrphus subcoleoptratus Fabr. (nec Linn.) 1775. Syst. Entom. 764, 9 et 1781. 

 Spec. Ins. II, 423, 11. -- Syrphus affinis Fabr. 1794. Ent. Syst. IV, 284, 24 et 

 1805. Syst. Antl. 218, 4 (Thereva). — A. ohscuripennis Meig. 1. c. 1838. VII, 

 289, 3. ^ 1862. Schin. F. A. I, 403. 



Male. Head very broad, double as broad as high; frons narrow 

 above, but rapidly widening downwards; face very broad, the inner 

 eye-margins S-like curved; the frons somewhat protruding. Ptilinal 

 suture about rectangular, the arms of it short, stopping high above 

 the jowls. Orbits downwards and cheeks very broad; jowls likewise 

 broad, but rather horizontal. Orbits black, greyish pruinose; cheeks 



Fig. 12. Wing of A. hemiptera ^ yar.vittata. 



and jowls whitish or a little yellowish; frontal stripe dark red. Only 

 a pair of small indistinct ocellar bristles present. Frontal bristles 

 small and fme, slightly marked against the hairs, reaching to lunula. 

 Vibrissæ ascending about to insertion of arista, outwards from them 

 the vibrissal ridges hairy. Orbits somewhat densely black-haired; 

 jowls with white hairs. Occiput grey, darkest above, with yellowish 

 hairs. Antennæ blackish brown, the basal joints reddish, third joint 

 a little longer than second; arista almost bare, thickened at base. 

 Palpi yellow to blackish. Thorax black, the disc slightly bluish grey 

 pruinose, at the sides more pruinose and grey; there are four black 

 stripes, the median abbreviated behind and also the lateral some- 

 what abbreviated. Scutellum yellow, somewhat whitish pruinose. 

 Thorax densely haired with black hairs, in front of the suture partly 

 or quite reddish. Pleura with dense and long golden reddish hairs. 

 No sternopleural bristles. Abdomen red with a broad dark middle 

 line, or it is black with only reddish sides; the black part with an 

 æneous or violet shine; it is black-haired or with more or fewer 

 yellow hairs at the sides, but the lateral margin is black-haired; 



