HYl'OCHALOIA] PHYCITIDAE 



in $ minutely ciliated, with thickened and slightly roughened 

 sinuation above base. Labial palpi very long, porrected, with 

 appressed scales, terminal joint moderate, somewhat pointed. 

 Maxillary palpi rather short, tolerably filiform, apex loosely 

 scaled. Forewings : 4 and 5 approximated. Hindwings : cell 

 reaching J, 4 and 5 stalked, 7 closely approximated to 8 to 

 middle. 



Includes about thirty nearly allied species, almost confined 

 to C. and S. Europe and C. Asia. Imago with forewings elon- 

 gate, posteriorly dilated, costa hardly arched. The only known 

 larva of the genus feeds on the roots of Umbelliferae. 



1. H. ahenella, Hb. 20-29 mm. Forewings greyish-ochreous 

 or brownish -ochreous, much mixed with dark fuscous, some- 

 times reddish -tinged ; first and second lines cloudy, darker. 

 Hindwings rather dark fuscous. 



Britain to the Clyde, on dry grassy bank?, rather local ; 

 Europe, Asia Minor ; 6, 7. 



8. DIORYCTRIA, Z. 



Face smooth. Antennae in $ ciliated -dentate, with some 

 rough scales on stalk above base. Labial palpi moderately 

 long, arched, ascending, with appressed scales, terminal joint 

 short, pointed. Maxillary palpi very short, loosely scaled. 

 Forewings : 4 and 5 closely approximated. Hindwings : cell 

 reaching J, 3 sometimes out of 5, 4 and 5 stalked, 7 closely 

 approximated to 8 to middle. 



A small genus, ranging over the European region and N. 

 America. Imago with forewings narrow, rather dilated, costa 

 moderately arched, termen little oblique. 



First line preceded by a light reddish-brown fascia 



1. splendidella. 

 without such fascia . . 2. abietella. 



1. D. splendidella, HS. (sylvestrella, Rag.) 28-32 mm. Fore- 

 wings silvery-grey, blackish -sprinkled ; first and second lines 

 strongly blackish-edged, first preceded by a light reddish-brown 

 fascia becoming blackish towards costa and blackish -edged 

 anteriorly ; a light discal spot, preceded and followed by dark 

 fuscous suffusion. Hindwings light fuscous, darker terminally. 



Norfolk, Cheshire, local but probably overlooked ; C. and 

 SW. Europe, Japan, presumably also in intervening regions ; 

 6, 7. Larva pale greenish ; dots black ; head reddish-brown ; 

 plate of 2 blackish -brown : beneath bark of Pinus sylvestris, 

 causing a lump of resinous exudation ; 4-6. 



2 B 



