320 LASIOCAMPINA 



clothed with hairs, all prolegs developed. Pupa in a dense 

 firm oval cocoon above ground. 



Odonestis and Gastropacha are correlated early types j 

 Clisiocampa and Eriogaster are developments of Odonestis, and 

 Lasiocampa of Eriogaster. 



TABULATION OF GENERA. 



1. Forewings with rounded dorsal prominence on Ib 



5. GASTROPACHA. 

 without dorsal prominence . . 2. 



2. Hindwings with 7 from angle . 3. CLISIOCAMPA. 



from upper edge of cell . 3. 



3. Hindwings with one or more pseudoneuria . 4. 



without pseudoneuria . 1. LASIOCAMPA. 



4. Palpi short . . . .2. ERIOGASTER. 



long . . . .4. ODONESTIS. 



1. LASIOCAMPA, Schrk. 



Palpi short. Forewings : 6, 7 8 approximated at base, 9 to 

 termen. Hindwings : 6 from angle of cell, 7 from upper margin 

 before middle, 8 connected or anastomosing shortly with 7. 



A small genus, apparently confined to the European region. 

 The imago flies in hot sunshine. 



Hindwings with yellowish fascia . . 1. quercus. 



without yellowish fascia . . 2. trifolii. 



1. L. quercus, L. (roboris, Schrk.; callunae, Palmer) 52-74 

 mm. Forewings in deep reddish-brown, in $ deep ochreous, 

 sometimes tinged with reddish - brown ; a white dark-edged 

 discal spot ; a sinuate postmedian ochreous-yellowish fascia, 

 variable in width. Hindwings as forewirigs, but without discal 

 spot ; fascia sometimes extending to termen. 



Britain to the Orkneys, Ireland, common, but apparently 

 less so than formerly ; Europe, WC. and N. Asia ; 7. Larva 

 black, hairs light brown, on sides darker brown ; lateral line 

 white, more or less interrupted often series of red or 

 whitish marks beneath this ; subdorsal red or whitish 

 spots on 3 and 4 ; spiracles white : on hawthorn, Calluna, 

 etc.; 9-5. 



2. L. trifolii, Esp. 42-68 mm. Forewings dull grey-reddish ; 

 a white or whitish dark-edged discal spot ; second line curved 

 or subsinuate, obscurely ochreous- whitish, in < dark -edged 

 anteriorly ; terminal area in $ irrorated with pale yellowish. 

 Hindwings grey-reddish, lighter in $ . 



