134 Tachinidae. 



a keel above between the antennæ. Proboscis and oral cone of medium 

 length; clypeus forceps-shaped. Antennæ inserted at about the 

 middle of the eye or a httle below, third joint from a httle longer 

 to more than twice as long as second; arista long-plumose. Thorax 

 nearly quadratic; three postsutural dorsocentrals and two præ- 

 and three postsutural acrostichals; exterior posthumeral bristle 

 placed higher than or as high as the præsutural ; a præsutural intraalar 

 bristle present. Scutellum with three to six marginal bristles on 

 each side; a pair of discai bristles or more. Two sternopleural bristles. 

 Thorax is characteristic by being clothed with dénse, felted metallic 

 coloured hairs, both on dorsum and pleura; these hairs are, however, 

 very liable to be lost, but are yet always visible, at all events on 

 pleura, and here they form long tufts at the anterior spiracle, along 

 the upper margin, down along the mesopleural suture behind the 

 row of bristles, and on pteropleura; the latter besides with a bundle 

 of black bristles above. Propleura bare, Abdomen ovate, somewhat 

 flat; excavation on second segment only present at base; bristles 

 present as marginal on fourth segment and on most part of fifth 

 segment. Fifth sternite in male cleft to base. Genitalia small, bent 

 in under venter; upper forceps narrow, cleft at apex or to middle; 

 lower forceps with arms as long as upper. Legs with not strong bristles. 

 Wings with first posterior cell narrowly open or just closed, some- 

 times short-petiolate, ending somewhat near apex of wing; discai 

 angle more or less rectangular; cubital vein with fine hairs stretching 

 more or less towards half way to medial cross-vein or farther; in 

 atramentaria (non Danish) the common stem of subcostal, radial 

 and cubital vein ciliate as in Phormia. No costal spine. Squamulæ 

 not hairy. 



The larva of P. rudis is known as parasitic in the earthworm 

 Allolobophora chlorotica (Keilin, Compt. rend. de se. de la Soc. de 

 Biol. LXVII, 1909, 201 et Proc. Ent. Soc. Washington, XIII, 1911, 

 182). 



Of the genus about a dozen European species are recorded, 

 but only four or five are well known; 3 occur in Denmark, 



Table of Species. 



1. Scutellum with three to four marginal bristles on each side; 



abdomen pruinose, more or less tessellate 2. 



— Scutellum with five to six marginal bristles on each side; 



abdomen black, shining 3. vespillo. 



