Phora. 195 



three); wings not or slightly yellow at base, the indication of the anal 

 vein less distinct, and seventh vein reaching the margin. 



Length 2,2 — 3 mm. 



Ph. aterrima is common in Denmark; Damhussø, Hellerup, Holte, 

 Birkerød, Hillerød, on Langeland at Lohals, on Ærø, on Funen at 

 Odense, in Jutland at Hejls soiith of Kolding, Jelling, on Fanø and 

 at Løkken; my dates are ^^s — V9. I have taken it in copula on Ve 

 and ^V?. My male specimens have been examined by Pater Schmitz. 



Geographical distribution : — Europe, towards the north to Lap- 

 land; further it goes down into North Africa and it occurs also in 

 North America. 



5. Ph. holosericea Schmitz. 

 1920. Schmitz, Jaarb. Natuurh. Genootsch. Limburg 1919, 121, Fig. 4. 



Male. Frons twice as high as broad, of equal breadth, the hairs 

 short; third row of bristles rather convex, the inner bristles somewhat 

 shorter than the others. Thorax with the hairs somewhat short and 

 dense. Hypopygium with the left arm of forceps with a fissure dividing 

 it into an upper and a lower lobe, both løbes are shagreened and 

 rugose, the upper lobe has a convex hind margin, and as the rugosity 

 is produced to the very margin, this is slightly crenelated; the lower 

 lobe distinctly hairy. Legs black, front tibiæ paler, brownish yellow 

 on the dorsal and anterior side, they are shorter than the tarsi; the 

 four last joints of front tarsi dilated, about as broad as the end of 

 tibia, the fourth joint very slightly longer than broad; the hairs below 

 hind femora short, the basal process not small, somewhat rounded, 

 with some hairs on the anterior side; middle tibiæ with one anterior 

 bristle below the base and with four to five dorsal bristles, hind tibiæ 

 with one anterior bristle at the upper third. Wings clear and colourless, 

 at most very slightly yellowish at base, thick veins brown, costa 

 black, thin veins pale brownish; costa reaching beyond the middle, 

 about 0,52 — 0,53 of the wing-length; 1 shorter than 2, about as 8 — 11; 

 costal cilia somewhat short, generally shorter than in aterrima-^ fourth 

 vein as in aterruna; the indication of anal vein short, not reaching 

 to the middle, seventh vein weak, nearly straight and abbreviated 

 at the end. 



Female. Similar to the male with the usual differences; middle 

 tibiæ (in my mated female) with three dorsal bristles; wings with 

 1 about equal to 2. 



13* 



