TEPHROCLYSTi!-] HYDRIOMENIDAE 193 



'H'l. T. indigata, Hb. 15-19 mm. Abdomen with subbasal 

 brown band and lateral blackish spot. Fore wings rather 

 strongly elongate, grey, with faint darker angnlated striae ; 

 edges of median band obscurely blackish-marked, more strongly 

 on costa ; a strong transverse blackish discal spot. Hindwings 

 pale grey, with faint grey striae ; a dark grey discal mark. 



Britain to Caledonian Canal, local ; C. Europe ; 5, 6, 8. 

 Larva slender, pale greenish-yellow or yellow-reddish ; dorsal 

 line dull reddish-brown or fuscous, sometimes obsolete ; sub- 

 dorsal and spiracular pale yellow ; head reddish : on Pinus 

 st/lvesfris and P. abies ; 7, 9. 



27. T. constrictata, Gn. 16-19 mm. Abdomen with margins 

 mixed with blackish. Forewings I'ather elongate, grey, with 

 indistinct curved darker striae ; edges of median band fine, 

 dark fuscous, blackish-marked, forming blackish costal spots ; a 

 blackish discal mark. Hindwings light grey, with obscure 

 darker striae ; a dark grey discal mark. 



Dorset, X. England, Scotland to Ross, Ireland, local ; not 

 recorded elsewhere ; 7, 8. Larva slender, with numerous very 

 short bristles, dark green; dorsal line broad, purplish -red ; 

 spiracular greenish-yellow : on flowers of Thymus ; 8, 9. 



28. T. subciliata. On. 15-16 mm. Antennal cilia of S 2, 

 fasciculated. Abdomen with rather dark reddish -fuscous 

 subbasal ring. Forewings rather elongate, pale greyish-ochre- 

 ous, middle of disc and sixth fascia mixed with brownish- 

 ochreous ; first five fasciae formed by pairs of dark fuscous 

 angulated striae ; a blackish irregular discal, and whitish tornal 

 dot. Hindwings pale greyish-ochreous, more whitish costally, 

 with confused fuscous striae ; a grey discal dot. 



England, local ; Germany ; 7, 8. Larva rather stout, 

 yellowish-green ; dorsal line dark green or purplish ; subdorsal 

 and lateral yellow-whitish ; spiracular pale green : on flowers 

 of maple ; 5. 



29. T. pusillata, /'. 17-20 mm. Abdomen with a brown 

 subbasal band, and margins mixed with black. Forewings 

 rather elongate, very pale greyish-ochreous, with indistinct 

 curved fuscous striae : edges of basal patch and median band 

 dark fuscous, stronger on costa ; subterminal line whitish, 

 forming median and tornal dots, margins suffused with fuscous; 

 an oval blackish discal spot. Hindwdngs whitish ; edges of 

 median band, praesubterminal line, and discal dot rather dark 

 grey. 



Kent to Devon, local ; N. and C. Europe ; 5. Larva slender, 



o 



