252 NOTODONTINA [APLASTA 



mosing with 12. Hindwings : 6 and 7 stalked, 8 approximated 

 bo cell towards base, diverging from middle. 



Includes only the one European species. It is a somewhat 

 isolated type, of uncertain affinity. 



1. A. ononaria, Fuesl. 22-27 mm. Head brownish-ochreous. 

 Forewings light ochreous, strigulated with ferruginous ; second 

 line formed by a cloudy darker suffusion ; subtermiual indis- 

 tinctly pale ; terminal band somewhat darker. Hindwings as 

 forewings, but markings hardly indicated. 



Kent, apparently a casual only ; WC. and S. Europe, Asia 

 Minor, Syria; 5, 6. Larva stout, clothed with stiff short 

 down ; dull green, dorsal line darker, spiracular obscurely 

 lighter : on Ononis spinosa ; 9-4. 



3. ERANNIS, Hb. 



Face with appressed scales. Tongue obsolete. Antennae in 

 d serrate, ciliated with very long fascicles. Palpi very short, 

 rough -scaled. Thorax somewhat 

 hairy beneath. Femora glabrous. 

 Forewings: 11 sometimes anasto- 

 mosing with 12 or 10. Hindwings: 

 6 and 7 stalked, 8 anastomosing 

 with cell to beyond middle. 9 

 apterous, with large anal tuft. 



A very small genus, confined to 

 the European region and North 

 America. Larva with rudimentary 

 prolegs on 9. 



1. E. aescularia, Schiff. 29-33 

 mm. Head brownish. Forewings 

 brown or brownish-ochreous, sprin- 

 kled with blackish ; first and second 

 Neuration of Erannis aescularia. ii nes serrate, whitish, internally 

 margined with blackish -fuscous marks in serrations; a dark 

 fuscous linear discal mark, and oblique apical streak. Hind- 

 wings pale whitish-fuscous ; a dark fuscous discal dot ; second 

 line faintly whitish, curved. 



Britain to Perth, Ireland, common (unfrequent in Scotland) ; 

 0. Europe ; 3, 4. Larva yellowish -green ; dorsal line dark 

 green, yellow -edged ; subdorsal, lateral, and subspiracular 

 yellowish : on oak, elm, etc. ; 5, 6. The $ moth strews hairs 

 from the anal tuft over her eggs. 



