STIGMONOTID^— ASTHENIA. 179. 



tint from the body-colour to pale grey or greenish-grey^ 

 with a blackish border behind ; anal plate dark grey or 

 blackish with a band of the same colour across the anal flap: 

 across the back of each segment is a pair of white belts, 

 sharply outlined and like enamel, 



June till August in the fresh galls of Andricus terminalis 

 (oak-apple) and A. ramuli (woolly gall), devouring the 

 internal substance of the gall. When full grown it quits the 

 young gall and spins up in bark, rotten wood, or the 

 old galls of Cynips Ugnicola, a.ss\iming the pupa state almost 

 immediately. 



Pupa light brown, thoracic organs very glossy. In a 

 silken cocoon in a small cavity gnawed in the woody sub- 

 stance to which the larva resorted. ' 



The moth frequents oak woods, and may occasionally be 

 beaten out of oak-trees and biishes, but ordinarily drops 

 straight to the ground ; ib flies naturally, and briskly, on 

 very still days, in the afternoon sunshine, and has been 

 found casually to frequent sallow-bloom at night. Rather 

 local and not very common, yet found in Kent, Surrey, 

 Sussex, Hants, Dorset. Wilts, Somerset, Berks, 'Herts, 

 Essex, Suffolk, Norfolk, Cambs, Gloucestershire, Hereford- 

 shire, Cheshire, Lancashire, Yorkshire, and Cumberland; 

 and in Scotland in the Edinburgh district, Perthshire and 

 the Clyde Valley ; but I find no record for Wales or Ireland, 

 Abroad it inhabits the South of France, Belgium, Holland 

 Alsace, Germany, Lower Austria, and Scandinavia. 



7. A. argyrana, ^rt&.— Expanse | to | inch (10-13 

 mm.). Fore wings black-brown marbled with white, and 

 with a broad white oblique dorsal blotch ; hind wings smoky 

 brown, the male with a broad white stripe down the front 

 area, 



Antennge, palpi, and head dull black-brown; thorax 

 similar but with white shoulder lappets; abdomen dull 



