pi.atyptimaI PTEROPHORIDAE 



scaled, terminal filiform. Tibiae simple or somewhat tufted on 

 centre of middle tibiae and origin of spurs. Forewings cleft 

 from §-J; 8 and 9 stalked, 11 remote. Hindwings trifid, third 

 segment with strong black scale-tooth in dorsal cilia. 



A considerable genus, quite cosmopolitan ; a development of 

 Stenoptilia. 



1. Scale-tooth of hindwings in middle of dorsum . 2. 



,, „ much beyond middle 6. 



2. Palpi and frontal tuft very long . . .3. 



„ ,, moderate . . .4. 



3. Posterior tibiae below middle-spurs wholly brown 



6. Bertrami. 

 ,, „ with white band 



7. ochrodactyla. 



4. Costal triangular spot sharply defined . . 5. 



,, ,, very ill-defined . 5. isodactyla. 



5. Apex of forewings appearing subfalcatc . 3. t/onodactyla. 



„ „ hardly sinuate . 4. Zetterstedtii. 



6. Hindwings with postmedian and small apical scale- 



teeth . . . .7. 



,, with large apical scale-tooth only 



8. rhododacti/la. 



7. Forewings reddish-fuscous . 2. acanthodactyla. 



„ pale greyish-ochreous marked with black 



1. cosmodactyla. 



1. P. cosmodactyla, lib. (punctidactyla, 11 w.) 18-21 nun. 

 Forewings pale greyish-ochreous closely striated with black ; a 

 triangular black blotch on costa beyond middle, followed by a 

 small white costal spot ; a black subtcrminal bar on segments, 

 posteriorly finely whitish-edged ; apical § of terminal cilia 

 white. Hindwings blackish ; scale-tooth very large, much 

 beyond middle, edged by whitish spaces ; a small black apical 

 scale-tooth. 



England, Argyll, S. Ireland, local ; N. and C. Europe ; 7, 

 9-5. Larva from pale green to purplish-pink ; dorsal line dark 

 grey ; subdorsal white, conspicuous ; lateral and spiraeular 

 whitish, interrupted ; head dark reddish-fuscous, almost black : 

 on Stachys, Aquilegia, Geranium, etc. ; 6, 8. 



2. P. acanthodactyla, lib. 18-21 mm. Forewings reddish- 

 fuscous, costa marked with dark fuscous, sometimes white- 

 dotted ; a dark fuscous triangular blotch on costa beyond 

 middle, usually followed by a wdiitc costal dash ; a dark fuscous 

 subtermina] bar on segments, posteriorly white-edged ; apical f 



2 p 



