CATACLYSM e] 



HYDRIOMENIDAE 



207 



Antennae in S cili- 

 areole double, l>ut 



15. Cataclysme, Rb. 



Face with somewhat pi'ojecting scales, 

 ated. Palpi rough -scaled. Forewings : 

 posterior wall absent between 7 

 and 8. Hindwings : 8 anastomos- 

 ing with cell to beyond middle. 



A small genus, attaclied to the 

 European region. 



1. C. virgata, Hott. {lineolata, 

 Hb.) 19-22 mm. Forewings fus- 

 cous, densely whitish - sprinkled, ^°^^^^''"S of Cataclysm, virgata. 



with nearly straight darker striae ; median band limited by 

 nearly straight slender ochreoi;s -brown externally blackish- 

 edged fasciae, preceded and second followed by whitish streaks ; 

 a blackish discal dot. Hindwings light grey, with pale bent 

 postmedian and some darker striae. 



England to Lancashire, S. Ireland, local ; C. Europe, WC. 

 and N. Asia ; 5-7. Larva pinkish or brown ; dorsal line dark 

 green or brown ; subdorsal pale or yellowish ; spiracular blackish- 

 grey : on Galium ve7'um ; 6-9. 



16. Hydriomena, Hh. 



Face with somewhat projecting or loose scales or conical 

 tuft. Antennae in S ciliated, rarely 

 naked. Palpi rough -scaled. Abdo- 

 men sometimes crested on 2 basal 

 segments. Forewings : areole double. 

 Hindwings : 8 anastomosing with cell 

 to beyond middle. 



A very large genus, principally 

 characteristic of temperate regions in 

 both hemispheres ; it is a develop- 

 ment from Xantliorhoe. 



1. Forewings yellow or orange 



Neuration of Hydriomena jdcata. 



3. Cilia of forewings barred . 



,, ,, not barred 



4. Forewings green or olive-greenish 



„ not greenish 



„ not vellow or orange 



4. 

 Hindwings orange 36. hilineata. 

 „ pale yellowish 3. 



6. fulvata. 

 7. dotata. 

 5. 

 . 9. 



