388 Tachinidae. 



at Varde, Greisdal, Hov, Laven, Albøge on Djursland, and Sæby, 

 and finally on Bornholm at Hasle; the dates are "/g — ^/m- I have 

 taken it in copula on ^J^. It occurs in and at woods, often on Umbelli- 

 fers. As hosts are known Vanessa polychloros^ Stilpnotia salicis, 

 Lymantria dispar, Malacosoma neustria, Lasiocampa guercus and of 

 Tenthredinids Tenthredella flavicornis, Tenthredopsis coqueherti (non 

 Danish) and campestris, Rhagogaster viridis and Tenthredo arcuata. 

 Nielsen has (Vidensk. Medd. fra Dansk naturh. Foren. 68, 1917, 30) 

 treated its biology; he bred it from an undetermined Tenthredinid 

 larva, taken on clover in September; the parasite hibernated in the 

 first larval stage in the half pupa of the host, and the imagines came 

 in June next year. It is interesting that the larva, though it does 

 not go out of the egg and then bore in as the other Tachina larvæ, 

 but goes out of the bottom of the egg direct in the host, yet uses the 

 hole as a primary breathing opening. One of our specimens is bred 

 from Orgyia ericae, not hitherto known as host for it. 



Geographical distribution: — Europe, towards the north to 

 northern Sweden; also known from Japan. 



84. Tpicliolyga Rond. 



Medium sized or somewhat large species of black colour with 

 pale pruinosity. The genus is nearly related to, and in most respects 

 similar to Tachina. Frontal bristles strong, descending down on the 

 cheeks with five or six bristles to below the middle or to the lower 

 third. Vibrissæ not much ascending, to about one third of the height. 

 Eyes densely hairy. Epistoma a little retreating, a little reflected 

 below, almost not prolonged below the large vibrissa. Antennæ 

 inserted well above middle of the eye, third joint somewhat more 

 than twice as long as second; arista with second joint a little elongated. 

 Palpi a little flattened. Thorax quadratic; four postsutural dorso- 

 centrals and three præ- and tliree (sometimes four) postsutural 

 acrostichals; a præsutural intraalar bristle, placed rather inwards, 

 not on a line with the postsutural. Three sternopleural bristles. Ab- 

 domen with only marginal bristles. Genitalia small, mainly as in 

 Tachina. Hind tibiæ with a distinct, somewhat dense anterodorsal 

 row of medium sized and somewhat equal bristles, with one or a 

 couple of longer bristles; claws and pulvilli in male strongly elongated. 

 Wings as in Tachina, but without costal spine. 



The best known species, sorbillans, is parasitic on a number of 



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