387 



quite black. Thorax rugosely punctured, parapsidæ somewhat 

 evanescent, metathorax area superomedia fivesided, open below 

 and confluent together with area posteromedia. Abdomen shin- 

 ing, black. Second segment slightly longer than third. Legs 

 red, femora and trochanters black, terebra short, not, or only 

 very slightly excerted. Tegulae black, wings hyaline, areola 

 rather small, closed. 



Length 8 — 10 mm. 



This species is easily known by its black colour, and by 

 the colour of the legs which are red from the trochanters. It 

 is allied to L. frigida, but differs besides by its size by its 

 black palpi and tegulae, and by the colour of the hind tibiae. 



It is this species that Deichmann alludes to when men- 

 tioning parasites on the larva of Dasychira groenlandica (4. 102). 



The larva of L. Deichmanni lives as an internal parasite 

 in the ISiTva. of Dasgchira. When the parasitic larva is fuUgrown, 

 the host is quite emptied and the parasite does not come out 

 of the hosts skin but makes its cocoon inside it, which con- 

 tracts somewhat but otherwise keeps its form. The cocoon fills 

 the entire larva skin, which is stretched tight over it, and is of a 

 pointed oval shape and parchmentlike, and of a brownish colour. 

 The parasite larva also bores a hole through the Lepidopterous 

 larva underside and attaches it to the surface with a white spin. 



When the parasite is fully developed it bores a hole on 

 the upper side of the cocoon and hosts skin, and then emerges. 

 Ratzeburg ^) mentions the larva of L. carbonaria Ratz., that 

 is parasitic on Orgyia antiqua L., and spins its cocoon in the 

 same way to the surface. 



A large number of specimens have been brought from 

 Hekla Havn, all or the most have been bred, 14. 5.-7. 6. 92. 



Geographical distribution: Only known from Green- 

 land. 



^) Ichneumonen d. Forstinsecten J, 1844, p. 93. 



