Eurnerus. 541 



1843. Zett. Dipt. Scand. II, 865, 5 et 1859. XIII, 6036, 5. — 186^. Schin. 

 F. A. I, 362. — 1907., Kat. palåarkt. Dipt. III, 136. 



Male. Very similar to strigatus; head of similar shape but the 

 vertex narrower, bluish black, yellow-haired. Eyes touching for a short 

 distance, slightly whitish-hairy, but however, more hairy than in strigatus. 

 Antennæ of about the same size, third joint scarcely as large; the 

 basal joints blackish, the third red or brownish red; the antennæ 

 greyish white pruinose; the arista inserted at a little distance from 

 the base. Thorax black or dark æneous, the usual two grey lines 

 faint or very faint; it is clothed with short, erect, yellow hairs. 

 Scutellum more bluish than in strigatus, with yellow hairs, finely 

 serrated at the margin. Abdomen as in strigatus but the fourth seg- 

 ment with a somewhat broad, yellowish hind margin, broadened in 

 the middle; it is also haired in the same way but the hairs on the 

 apical part of fourth segment black and not long, but a little erect. 

 Genitalia larger, black-haired ; the fourth ventral segment with a more 

 narrow incision in the hind margin and the margins of the incision 

 cleft into teeth, the apical corners with dense, black hairs. Legs mainly 

 as in strigatus and haired in the same way ; tarsi blackish ; hind femora 

 slightly less thickened but armed below as in strigatus. Wings brownish : 

 stigma brown or pale brown; cubital vein and medial cross-vein as 

 in strigatus. 



Female. Likewise similar to the female of strigatus but disting- 

 uished by the red antennæ and the black-haired apex of abdomen ; 

 the fourth abdominal segment without yellow hind margin. Antennæ 

 with the third joint very large, roundish. 



Length 6,5 — 7,5 mm. 



E. ruficornis is very rare in Denmark, we have only four speci- 

 mens from earlier time, taken at Sorø, no doubt by Jacobsen; no 

 date is given. 



Geographical distribution: — Europe down into Spain and Italy; 

 towards the north to middle Sweden. 



43. Ferdinandea Rond. 



(Chrysochlamys Walk.) 



Species of medium size and of more or less bright æneous colours, 

 with pruinose stripes on thorax. Head somewhat semiglobular, broader 

 than high and broader than thorax, slightly excavated behind. Eyes 

 touching in the male, separated in the female, hairy ; in the male the 

 facets are slightly enlarged on the front part towards the suture. 



