A new species of Trichoptera from Finnish Lapland 



Asynarchus productus. 



By 



Eenneth J. Morton. 



Blackish; hairs yellowish; antennae with long basal Joint, 

 fuscous with testaceous annulations; warts of head, margins of 

 eyes above, pronotum, warts of mesonotum and wing callosities 

 reddish testaceous; underside including palpi and legs dusky te- 

 staceous; pleura of thoracic segments blackish, coxae fuscescent; 

 spines of legs black. 



Fore-wings pather broad, apex dilated, margin parabolic; 

 discoidal cell broad, straigth on anterior margin, much longer 

 Ihan footstalk. P' and 5**^ apical cellules subequal, longer than 

 the three cellules between them, closed by oblique nervules and 

 therefore somewhat acute at base; 2°'^ and 4*^^ truncate at base, 

 2°"^ broader than 4*''; 3^'^ angulate at base, nearly equal in length 

 with 2''^ and 4'''. These wings are pale grey, with a shght testa- 

 ceous finge, virorated with pale dots which are most numerous 

 in the apical region; pterostigma very strongly marked, very 

 dark brown, traces of which colour are also evident in the in- 

 tercubital and post-costal areas and at the anal angle; a large 

 pale crescentic marking at the anastomosis; a large two-coloured 

 spot at the thyridium, externally fuscous divided by a pale ner- 

 vure, internally pale; there is also a large pale spot at the ter- 

 mination of the 7^^ apical sector; neuration pale except in the 

 Upper part of anastomosis where it is fuscous, hairs blackish 

 longer on posterior cubitus and post-costa; pubescence of meni- 

 brane blackish mixed with golden. 



Hind-wings with discoidal cell very similar to that of fore 

 wings. P' and S"""^ apical cellules nearly equally long and longor 



