Trichoparia. 447 



stripe velvet brown or brownish black. Frontal bristleg descending 

 to end of second antennal joint. Vibrissæ ascending nearly quite up, 

 somewhat strong. Orbits with sparse black hairs; cheeks with fine 

 hairs on inner half; jowls black-haired. Occiput grey, with black 

 hairs behind postocular bristles and with pale hairs below. Antennæ 

 black, long and linear; arista thickened in fully the basal half, second 

 joint somewhat elongated. Palpi blackish. Thorax black, grey prui- 

 nose, with four black stripes, the median narrow, abbreviated quite 

 behind, the lateral interrupted at the suture; scutellum dark. Thorax 

 with quite short black hairs; three præ- and three postsutural acrosti- 

 chals. Abdomen blackish, the three last segments greyish yellow to 

 brownish pruinose with shifting dark spots, according to view, and 

 scarcely leaving narrow hind margins, but a more or less distinct 

 middle line black. Abdomen is black-haired, with bristles as in blanda. 

 Legs black; middle tibiæ with two anterodorsal bristles; claws as 

 long as fifth tarsal joint. Wings slightly tinged but rather yellow 

 at base; veins yellow to brown; first posterior cell narrowly open or 

 just closed; discai angle obtuse; posterior cross- vein nearer the angle 

 than the medial cross-vein. Squamulæ dark yellow. Halteres yellow 

 to red. 



Female. Similar; frons a little broader. Front tarsi with the four 

 last joints dilated. 



Length 7 — 8 mm. 



7". seria is very rare in Denmark, only one specimen, a male, 

 is known, taken in Jutland at Sønderborg on ^"/e (Wtistenei). The 

 species is known as bred from Ctenophora pectinicornis and Xiphura 

 atrata and var. ruficornis. 



Geographical distribution: — Europe down into France; towards 

 the north to southern Sweden. 



3. T. decorata Zett. 



1849. Zett. Dipt. Scand. VIII, 3237, 69—70 et 1859. XIII, 6089, 69—70 

 (Tachina). — 1907. Kat. palåarkt. Dipt. III, 400 (Degeeria). — 1924. Stein, 

 Arch. f. Naturgesch. 90, 6, 147, 3. 



Male, This species is very similar to seria. Frons broader than 

 the eye, only a little protruding. Cheeks narrower than in seria^ 

 especially below; jowls not one half of the height of the eye. Frontal 

 bristles descending to insertion of arista. Vibrissæ less ascending 

 than in seria. Cheeks with fme hairs along inner margin, mainly in 

 one row. Occiput black-haired, with only few pale hairs below in the 



