boletobia] PLUSIADAE 147 



1. B. fuliginaria, L. 23-29 mm. Forewings dark fuscous; 

 first and second lines pale oelireous, internally dark-edged, 

 second dentate ; a darker discal mark ; subterminal lino pale 

 ochreous, subdentatc. Hindwings as forewings, but first line 

 obsolete. 



Kent, Sussex, Middlesex, Worcester, scarce and local ; N. 

 and 0. Europe, Asia Minor, N. Asia ; 7. Larva blackish ; 

 dorsal and supraspiracular dots orange : on fungus (a blackish 

 species of the family Miisccdines) growing on rotten wood ; 

 5, 6. 



2. Abthia, lib. 



Head loosely scaled, with frontal tuft. Antennae in <J 

 ciliated, with long bristles at joints, sometimes with a thicken- 

 ing below middle. Palpi long or very long, ascending or re- 

 curved, thickened with tolerably appressed scales, terminal joint 

 loosely scaled above, pointed. Thorax smooth-scaled. Abdomen 

 not crested. Tibiae with appressed scales ; anterior tibiae in <J 

 sometimes with long expansible hair-pencil. Hindwings: 5 

 parallel to 4. 



Includes a few species inhabiting temperate portions of the 

 northern hemisphere. Pupa in a slight cocoon. 



1 . Forewings with entire dark fuscous subterminal lino 2. 



,, without such line . . .3. 



2. Subterminal line running to apex . . 3. nemoralis. 



,, ,, „ to costa 2. iarsipennalis. 



3. First and second lines whitish-ochreous . 1. emortualis. 



„ „ ,, dark brown . 4. derivalis. 



1. A. emortualis, Schiff. 23-27 mm. Forewings pale 

 ochreous finely sprinkled with brown ; first and second lines 

 hardly curved, whitish-ochreous; a whitish-ochreous discal 

 mark. Hindwings as forewings, but first line absent. 



S. England to Oxford and Essex, scarce and local ; C. 

 Europe, N. Asia; 6, 7. Larva without developed prologs on 

 7 : on oak ; 9, 10. 



2. A. tarsipennalis, Tr. 27-30 mm. Antennae in $ with a 

 thickening below middle. Anterior tibiae in $ with long hair- 

 pencil. Forewings light brown ; first and second lines dark 

 fuscous, first curved, second sinuate-curved; a curved dark 

 fuscous discal mark; subterminal line straight, dark fuscous, 

 pale-edged posteriorly. Hindwings pale fuscous ; a bent dark 

 fuscous posteriorly pale-edged subterminal line. 



Britain to the Clyde, W. Ireland, common ; 0. Europe, N. 



