Pipunculus. 53 



middle cross-vein at about the first foiirth of the discai cell. Halteres 

 yellow. 



Female. Similar; frons black and shining above, grey on the 

 lower half; abdomen with a large lateral yellow spot on third and 

 foiirth segment and venter mainly yellow. Hypopygiiim small, the 

 basal part ovate, blackish and shining, the short, reddish ovipositor 

 of about the length of the basal part, thick at the base. Front femora 

 without spot. Claws and pulvilli much enlarged. 



Length 3,5 mm, 



P. maculatus is rather rare in Denmark, Charlottenlund (Stæger), 

 Hald near Viborg and on Bornholm in Almindingen (H. J. Hansen) 

 and at Hammeren (the author); in the latter place it was taken in 

 some numbers in a small wood, swarming low on Vaccinium myrtillus; 

 my dates are from the last days of July to ^^/s. I have seen Zetter- 

 stedt's specimens of fulvipes, they are identical with maculatus. 



Geographical distribution: — Europe down into France, towards 

 the north to northern Sweden. 



22. P. semimaculatus Beck. 

 1897. Beck. Berl. Entom. Zeitschr. XLII, 91, 52, Taf. II, Fig. 19 et 1900. 

 XLV, 240, 52 et 1921. Wien. Ent. Zeitg. XXXVIII, 162, 163. - 1910. Kertész, 

 Cat. Dipt. VII, 381 {Dorylas). 



Male. Eyes nearly touching but a very narrow, black frontal 

 stripe visible between them; vertex black, shining, frons and epistoma 

 whitish. Occiput grey below, black and somewhat shining in the upper 

 half. Antennæ with the third joint brownish yellow, it is pointed, 

 but it is not so long as in maculatus. Thorax black and shining, almost 

 not pruinose, humeral knob of the same colour; the disc very sparingly 

 with fme hairs, present only as dorsocentral rows and behind the 

 humeri, the hairs at the margin of scutellum not longer. Pleura and 

 postscutellum slightly greyish and somewhat shining. Abdomen 

 black, shining, first segment grey, at the lateral hind corners of third 

 and fourth segment indefmite reddish spots. Abdomen not pruinose, 

 but, however, with a very short greyish pubescence and very sparse 

 longer, fme hairs, at the sides of first segment a conspicuous fan of 

 long, yellow^ hairs. Hypopygium large, conical, piceous on the right 

 side, it is somewhat pruinose and has a small, round apical impression, 

 the end claws reddish. Legs yellow^, anterior femora with a very small, 

 blackish patch at the base above on anterior side, hind femora with 

 a similar, still weaker patch above near the middle, last tarsal joint 



