YPONOMEUTA] 



PLUTELLIDAE 



697 



Larva yellowish-grey ; spots black : on Sedum telephium ; 6, 7, 

 9, 10. 



4. ORTHOTAELIA, *SV/>//. 



Head with appressed hairs. Antennae ;.;, in $ serrate, 

 shortly ciliated, basal joint without pecten. Labial palpi long, 

 recurved, second joint with appressed scales, terminal longer 

 than second, acute. Maxillary palpi very short, filiform. 

 Abdomen elongate. Fore wings : 7 and 8 separate, 8 to apex. 

 Hind wings over 1, oblong-ovate, cilia ^; 3 and 4 connate, 6 

 and 7 nearly parallel. 



Includes only the single species. Imago with forewings 

 elongate, rather narrow, termen straight, little oblique. 



1. 0. sparganella, Thnb. 21-28 mm. Forewings whitish- 

 ochreous to reddish-ochreous, usually more or less suffused with 

 dark purplish -fuscous, especially on a longitudinal discal streak 

 dilated posteriorly, veins often marked with pale streaks ; often 

 several dark fuscous dots on fold, and a suffused dark spot in 

 disc at . Hind wings ochreous-whitish to whitish -grey, lower 

 half of termen suffused with grey. 



England to York, rather local ; N. and C. Europe ; 7, 8. 

 Larva grey or whitish ; head reddish-brown ; 13 much flattened : 

 in stems and leaves of Sparganium, Iris, Poa aquatica, etc. ; 5, 6. 



5. CEROSTOMA, Latr. 



Head with appressed or loose hairs. Antennae -f, sometimes 

 rough -scaled above towards base, in simple, basal joint 

 usually with flap of dense scales. 

 Labial palpi long, recurved, 

 second joint with projecting tuft 

 of scales beneath, terminal longer 

 or shorter than second, some- 

 times roughened in front, acute. 

 Maxillary palpi moderate or 

 short, filiform, porrected. Fore- 

 wings : 2 and 3 sometimes 

 stalked, 7 and 8 sometimes 

 stalked. Hindwings over 1, 

 elongate -ovate, cilia f -1 ; 3 and 

 4 sometimes approximated, 6 and 

 7 stalked. 



A northern temperate genus of some extent. Imago with 

 forewings elongate, more or less narrow, apex often produced or 

 falcate, termen very oblique : antennae porrected in repose. 



Neuration and head of Cerostoma 

 rudiatcUo. 



