DIASTICTIS] SELIDOSEMIDAE 259 



America ; 6, 7. Larva white ; dorsal line dark green, finely 

 black-edged; subdorsal rosy-brown, dark - edged ; three brown 

 lateral lines ; a spiracular series of yellowish marks : on 

 Vaccinium and Pinus sylvestris ; 4, 5. 



2. D. wauaria, L. (wavaria, F.) 25-30 mm. Head grey- 

 whitish. Forewings grey-whitish, strigulated with grey ; four 

 dark fuscous costal marks, second usually joined with black 

 V-shaped discal mark; termen suffused with light brownish. 

 Hind wings with ground as in forewings ; a dark grey discal 

 dot. 



Britain to Ross, Ireland, common; N. and C. Europe, N. 

 America; 7, 8. Larva grey -green or lead -grey, with black 

 spots ; dorsal surface yellower ; a spiracular yellow black- 

 spotted line, sometimes interrupted ; head grey, black-spotted : 

 on currant and gooseberry (Ribes) ; 5, 6. This larva seems to 

 mimic the abundant and distasteful larva of the gooseberry 

 sawfly (Nematus ribesii). 



3. D. roboraria, Schif. 48-52 mm. Head whitish sprinkled 

 with fuscous, face fuscous. Forewings whitish or fuscous- 

 whitish, densely sprinkled with fuscous and black ; lines waved ; 

 first, median, and second blackish-fuscous, median and second 

 approximated and thickened dorsally; subterminal pale, an- 

 teriorly partly dark - margined ; a dark fuscous discal mark 

 before median. Hindwings as forewings, but first line absent, 

 median straighter, second remote, not thickened, discal mark 

 beyond median. 



England to York, not common ; C. Europe, N. Asia ; 7. 

 Larva purplish -brown or ochreous- brown, with variable indi- 

 cations of pale markings ; 6 (sometimes also 4) with two sub- 

 dorsal prominences, 12 with slight dorsal ridge ; head bifid : on 

 oak; 8-5. 



4. D. consortaria, F. 43-50 mm. Differs from D. roboraria 

 as follows : wings more brownish-tinged, median and second lines 

 hardly thickened dorsally, discal mark linear, whitish, margined 

 with dark grey. 



5. England to Leicester, not common ; C. Europe, WC. and 

 N. Asia, Japan ; 6, 7. Larva greenish-grey ; dorsal line darker ; 

 lateral paler ; 6 with two subdorsal prominences ; 12 with slight 

 dorsal ridge : on oak ; 8, 9. 



3. ECTROPIS, Ifb, 



Face nearly smooth or with somewhat projecting scales. 

 Tongue developed. Antennae in <$ with two short acute pro- 



