A now spGGies of Trichoptera from Finnish Lapland 



Asynarchus productus. 



By 



Kenneth 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 palher broad, apex dilated, margin parabolic; 

 discoidal cell broad, straigth on anterior margin, much longer 

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

 ihe 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 påle grey, with a slight testa- 

 ceous tinge, virorated with påle döts 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 

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

 spöt at the thyridium, externally fuscous divided by a påle ner- 

 vure, internally påle; there is also a large påle spöt at the ter- 

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

 upper part of anastomosis where it is fuscous, hairs blackish 

 longer on posterior cubitus and post-costa: pubescence of mem- 

 brane blackish mixed with golden. 



Hind-wings with discoidal cell very similar to I hat of före 

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



