Pipunculus. 55 



brown or olive, pruinose, dull, but seen from in front greyish white, 

 almost silvery, especially at the humeri and sides; humeral knob 

 yellowish or whitish; the disc very sparingly with fme brownish hairs, 

 forming only dorsocentral rows and present behind the humeri, the 

 hairs at the margin of scutellum not longer. Pleura grey, posteriorly 

 whitish when seen from in front, postscutellum greyish. Abdomen 

 black, almost greenish black, shining, a little pruinose, especially 

 behind, first segment grey, dull. Abdomen is sparingly clothed with 

 short hairs, a little longer on fifth segment, all pale, first segment 

 with a couple of a little longish hairs at the sides. Hypopygium small, 

 black, somewhat pruinose, with an oblique, narrow, split-like apical 

 impression on the right side, the end claws reddish at apex. Legs 

 black, apex of femora, and base of tibiæ a little more broadly, pale 

 yellow, tarsi brownish yellow, the apical joint danker; femora greyish 

 pruinose, but hind femora shining behind; the legs haired as usual, 

 posterior femora with very small spinules in two rows below the apical 

 part, especially fine on hind femora; hind trochanter with about 

 four small bristles below at base. Wings nearly clear, stigma absent 

 and third costal segment about half as long as fourth, middle cross- 

 vein beyond the middle of the discai cell. Balteres yellow. 



Female. Similar; frons rather broad, black and shining above, 

 greyish white below above the antennæ. Hypopygium narrowly ovate, 

 somewhat shining, ovipositor about as long as the basal part, thin 

 and straigth. Anterior femora armed with a pair of bristles below 

 the base, hind trochanters armed as in the male, but the bristles 

 more hair-like; tarsi more robust than in the male, especially hind 

 metatarsi; claws and pulvilli larger. 



Length 3 or fully 3 mm. 



P. littoralis seems to be rare in Denmark, at all events only few 

 specimens have been taken hitherto, Vedbæk (Stæger), in Jutland 

 at Agger (Th. Mortensen) and at Skagen; it was taken in June; as 

 the localities show the species is exclusively a shore species. 



Geographical distribution: — The species is hitherto known 

 with certainty only from Denmark down to northern Germany (Sylt 

 and Amrum) and from England. 



Remarks: Becker united 1. c. 1900 his littoralis and minimus as 

 male and female of one species; Collin 1. c. shows, that this cannot 

 be so, and under the name of minimus he describes male and female 

 being very probably Becker's species. 



