triphaena] CARADRINIDAE IOp 



21. Triphaena, 0. 



Head rough-scaled ; eyes glabrous. Antennae in $ ciliated, 

 or bipectinated with apex simple. Thorax usuall_y with more 

 or less developed anterior and posterior crests. Abdomen not 

 crested. Middle and posterior tibiae spinose. 



Nearly correlated to the preceding genus, but much less 

 extensive, and appai'ently restricted to the northern hemi- 

 sphere. 



1. Hindwings orange . . . .2. 



,, not orange . . .4. 



2. Hindwings with base dark fuscous . . 3. 



,, ,, base not dark fuscous . 1. jtmhria. 



3. Forewings with crimson costal praesubterniinal 



blotch . . .2. ianthina. 



,, without such blotch . 3. interjecta. 



4. Forewings greenish . . .9. />ra.s?'na. 



,, not greenisli . . . .5. 



5. Subterminal line preceded by blaclv subcostal spots 4. haja. 



,, ,, not preceded by black spots • 6. 



6. Hindwings whitish . . 7. leu^or/rapha. 



,, not whitish . . .7. 



7. Orbicular suftused with whitish . . 8. hyjierhorea. 



,, not whitish . . . .8. 



8. Head dark ferruginous-reddish . . 5. sohrina. 



,, not dark ferruginous-reddish . 6. rubricosa. 



1. T. fimbria, L. 50-57 mm. Antennae in ^ ciliated. Fore- 

 wings rather narrow, ochreous-brown, variably tinged with 

 reddish or greenisli or partially suffused with wliitish-ochreous ; 

 subbasal and first lines dark ; orbicular and reniform approxi- 

 mated, edged with ochreous - ^v'hitish ; second line wliitish- 

 ochreous, preceded by a dark and followed by a pale band ; 

 subterminal pale, preceded on costa by a dark blotch enclosing 

 a black mark. Hindwings bright orange, with a very broad 

 black terminal band. 



Britain to Eoss, Ireland, common ; C. and S. Europe, Asia 

 Minor ; 7, 8. Larva reddish-ochreous, brown-dotted, becoming 

 paler laterally ; dorsal line obscurely pale ; a dark posteriorly 

 pale-edged bar on 12; spiracles pale, placed in dark spots ; 

 head brown, darkex'-reticulated : on birch, Salix, hawtliorn, 

 Rumex, etc. ; 9-5. 



2. T. ianthina, Esp. 35-41 mm. Antennae in S ciliated. 

 Forewings rather dark brown, more or less tinged with purple- 



