94 



THE ENTOMOLOGIST. 



Povionaria. 



Small translucent 



Fairly large; glaucous 

 green, more opaque 



Isabellce. 



Lapponaria. 



As in pomonaria 



Young larva. 



Second instar 



Full-grown 



Black, with white 

 spots and bars 



Usual form of genus 



Short, stout ; pattern 

 decided ; texture 

 coarse ; colour yel- 

 lowish 



Food. 



Oak — most 

 trees 



forest 



Greenish ; no spots, 

 &c. 



Green ; striped to 

 mimic larch needles 



Pattern nearly the 

 same as in pomonaria 

 Ground purplish. 



Larch — refuses other 

 foods 



^s in pomonaria, but 

 with more white spots 

 on spiracular stripe 



As in pomonaria 



Longer; skin texture 

 fine ; stripes degraded 

 as in zonaria 



Birch, Erica, Myrica 

 gale, many trees and 

 shrubs 



Red brown, 

 polished 



rather 



Yellower brown 



A.S in pomonaria — 

 shorter 



Antennae .... Tip clear 

 Collar Broad white 



Thorax Pattern as in descrip 



tion of isabellce, but 

 coarser, and colours 

 less decided ; whole 

 much paler 



Fore wings . . 'Long — tip rounded 



Fringes .White ; black spots at 



ends of veins ; fairly 

 ! broad 

 Valves of geni- Tip rounded, as 

 talia I hirtaria 



Tip clear 



Narrow white 



Pattern as described. 

 Red median stripe 

 and white outlines 

 of patagia very clear 



As in pomonaria 



Narrow ; black 



As in pomonaria, but 

 narrower 



Pectinations 



cated at tip 

 Black 



indi- 



Much broader. No 

 pattern, medio dorsal 

 red stripe clear ; fur 

 paler laterally 



Shorter and broader ; 

 tip angular 



Broad ; silky dark fus- 

 cous, like zonaria 



Tip with definite 

 angle as in zonaria 



Antennae 



Thorax and 

 abdomen . . 



Wings 



Whole outline Long 

 of insect 



Rather thin ; black 



Colour black, irregu 

 larly speckled with 

 rusty scales. Hairs 

 short pale 



Rudimentary, very 

 short, with rusty 

 scales and few pal 

 hairs 



Thick ; pale 



Scales redder, simi 

 larly scattered. Few 

 pale scales. Hairs 

 much longer and 

 paler 



Much longer ; scales 

 redder, but some 

 almost white scales 

 present. Hairs much 

 longer 



As in pomonaria 



Thin; black 



Red scales definitely 

 massed in a broad 

 median stripe down 

 both thorax & abdo- 

 men ; hairs pale short 



Variable in size, but 

 never so long as 

 in isabclla:. Hairs 

 darker and shorter 



Shorter and rounder 



