TEPHROCLYSTIS] HYDRIOMENIDAE 189 



fuscous striae ; veins partly marked with blackish and white ; 

 posterior edge of median band blackish-marked ; subterminal 

 line whitish, forming a larger white tornal crescent ; a small 

 black discal mark, partly whitish-edged ; cilia obscurely barred. 

 Hind wings grey, whitish-mixed, with darker striae ; a darker 

 discal and whitish tornal dot. 



Britain to the Hebrides, Ireland, very common ; C. Europe ; 

 5, 6. Larva tapering anteriorly, ochreous or reddish-brown, 

 white-dotted ; a dorsal series of brown marks ; spiracular line 

 yellowish, sometimes black-marked ; incisions orange : on haw- 

 thorn, Rubus, Senecio, etc. ; 7. 



11. T. oblongata, Thnb. (centaureata, F.) 19-22 mm. Thorax 

 white. Abdomen with black lateral spots on two basal segments. 

 Forewings white ; striae obsolete, on margins dark grey ; edges 

 of median band very fine, blackish, curved near costa ; subter- 

 minal line edged by pale brownish shades ; a black discal 

 crescent. Hind wings whitish ; striae dorsally, edges of subter- 

 minal line and a discal dot grey. 



Britain to Caledonian Canal, W. Ireland, common ; Europe, 

 W. Asia; 5, 6, 8. Larva slender, green or ochreous; dorsal 

 line and a series of five tridentate marks dull red, orange, 

 darker green, or absent : on flowers and seeds of many 

 Umbelliferae, Conporitae, etc ; 7, 9. 



12. T. subfulvata, Hw. 21-23 mm. Abdomen with black 

 lateral streak. Forewings brown, reddish-tinged ; costa and 

 termen (sometimes also dorsum) rather broadly grey, striated 

 with dark grey ; a black discal dot. Hind wings grey, with 

 darker striae and discal dot. 



Britain to Caledonian Canal, common ; C. Europe, NW. 

 Asia; 7. Larva slender, pale yellowish-brown, grey-brown, or 

 reddish-brown, white-dotted ; dorsal line and a series of oval 

 blotches olive -brown ; subdorsal dark brown, interrupted : 

 spiracular white : on Achillea millefolium ; 9, 10. 



13. T. satyrata, Hb. (Curzoni, Gregs.) 21-23 mm. Abdomen 

 mixed with white. Forewings fuscous or grey, somewhat 

 whitish-mixed, with darker obtusely angulated striae ; veins 

 marked alternately with blackish and white; a clear white 

 tornal dot ; a dark fuscous discal dot. Hindwings as forewings, 

 but less distinctly marked. 



Britain to Orkneys, Ireland, common (less frequent south- 

 wards) ; N. and C. Europe ; 5, 6. Larva dull green, sometimes 

 yellow-speckled ; dorsal line and sometimes a series of spear- 

 head-shaped marks darker, reddish-brown, or purplish ; spira- 



