38 Orthorrhapha brarhycera. 



a narrow yellow strijje from the hiuneral cailus to thc wing-root ; 

 postalar callus with a small, yellowisli spot. Scutelliim and spines 

 yellow, the latter darkeiied at the tips. Postscutellum biack. Abdomeu 

 black with a small semicircular .spot at the apex. Venter black. Legs 

 yellow. hind femora more or Icss darkened in the middle nearest to 

 the apex. Wings hyaline, anterior veins brownish yellow, stigma very 

 slightly yellowish. Halteres wiiitish yellow, i)eduncle a little darker. 



Female. Eyes nearly bare with a reddish band a little above the 

 middle. Front and face black, on eacli side of the lower i)art of the 

 inner eye-margin. from the eye-band downwards, is a yellow. white 

 haired stripe and above it a small yellow spol; liinder eyo-margin 

 broåd, black; on each side of the vertex an oblique, yellow strijie from 

 the upper eye-corner inwards to the ))ack of the head: on the lower 

 part of the hinder eye-margin is a yellow spot. Thorax with sliort. 

 whitish {)ubescence. 



Length 4.5— 5 mm. 



This species is easily distingiiished from tiie closely related O. leonina 

 by the design of the abdonien and the colouring of the head in the 

 female, and also by the brown antennæ with yellow basal joints and 

 the almost quite yellow legs. 



O. terminata is very rare in Denmark as there has only been 

 taken three specimens. all females. on Bornholm at Hasle on the 

 1";« 1870 by iVIr. Schlick. 



Geograpliical distribution : — Middle Europe down to Austria, it is 

 not known farther nortli Ihan Bornholm. 



6. O. formosa Meig. 



1822. Meig. Svst. Beschr. 111. 127. 5. — 1842. Zett. Dipt. Scand. 1. 

 145, 5. - 1857. Loew, Berl. Ent. Zeilschr. I, 26. - 1862. Schin. F. A. 

 I, 10. - 1903. Kat. palaarkt. Dipt. II. 12. 



Male. Eyes sparingly and very short haired, the facets in the 

 lower part smaller than above, a reddish band on the dividing line. 

 Front not ascending to the middle of the head. eye-suturo rather long. 

 Frontal triangle and face black. Antennæ black, sometimes slightly 

 lighter at the base. Thorax shining black, sparingly pubescent ; a large 

 side spot, including the hnmeral callus, yellow, the spot reaching back- 

 wards, below the wing-root, towards the hind coxæ, and below it. on 

 the pleura, a yellow spot; postalar callus largely yellow. Scutellum 

 yellow, postscutellum black. Abdomen black, on the third and fourtli 

 segments more or less triangular side spots, connected with each otiier 

 along the side margin and connected with the yellow hind margin of 

 the fifth segment; the yellow colour may also reach forwards along 



