tefhuoclystis] HYDRIOMENIDAE 



Asia ; 5, 6. Larva slender, pale ochreous or reddish-ochreous ; 

 dorsal lino and a series of spearhead-shaped blotches brown or 

 dull green ; subdorsal sometimes reddish ; head ochreous or 

 dull green : on Scabiosa, Lychnis, Ononis, Epilobiwm, etc. ; 

 8,9. 



18. T. lariciata, Frr. 21-23 mm. Differs from T. castigata 

 as follows : antennal cilia of (J 1, forcwings more elongate, 

 ground more whitish, not ochreous-tinged, striae darker, more 

 angulated, veins much marked with black, discal black spot 

 larger, oblong. 



Britain to the Hebrides, N. and W. Ireland, common ; C. 

 Europe, WC. and N. Asia ; 5, 6. Larva slender, green or 

 reddish-ochreous; dorsal line darker or brownish, anal end 

 reddish ; subdorsal sometimes brownish ; spiracular pale yel- 

 lowish or whitish : on larch and fir ; 7, 8. 



19. T. virgaureata, Dbld. (pimpinellata, Gn.) 19-21 mm. 

 Differs from T. castigata as follows : forewings distinctly ochre- 

 ous-tinged, striae less distinct except on costa, veins posteriorly 

 alternately marked with blackish and whitish, a distinct white 

 tornal dot, discal black spot larger, oval. 



England to York, Ireland, local ; WC. Europe ; 5, 6. 

 Larva slender, ochreous-yellowish ; dorsal line and a series of 

 five spearhead-shaped whitish-edged blotches darker : on flowers 

 of Solidago, Senecio, etc. ; 8, 9. 



\T. ultimaria, B., a small South European tamarisk-feeding 

 species, has been included in English lists, but without apparent 

 justification.] 



20. T. cauchyata, Diip. (pernotata, Gn.) 22-23 mm. Ab- 

 domen without markings. Eorewings light grcyish-ochreous, 

 with curved brownish-ochreous striae ; veins whitish, marked 

 with groups of scanty black scales ; fifth and sixth fasciae 

 brownish-ochreous, subterminal line whitish; a small black 

 discal dot. Hindwings as forewings, but markings less distinct. 



Once, but locality unrecorded ; C. Europe ; 6 if). Larva on 

 flowers of Solidago virgaurea ; 8, 9. 



21. T. plumheolata, Hw. 16-18 mm. Abdomen without 

 markings. Eorewings pale grey, sometimes ochreous-tinged, 

 with curved dark grey striae ; an indistinct dark grey discal 

 dot. Hindwings as forewings, but markings much more in- 

 distinct. 



Britain to Aberdeen, Ireland, common ; C. Europe ; 5, 6. 

 Larva rather stout, pale yellowish-green ; dorsal line purple- 

 reddish, dilated in middle of each segment ; subdorsal purple- 



