7 4 LEPID O P TEP^ A . 



dark grey ; the dorsal vessel in some specimens is partially 

 visible as a red line ; spiracles round and black and 

 surrounded by a pale ring (Dr. J. H. Wood). August 

 to April on sallow (Salix caprca') and rarely on willow ; 

 inside a young shoot which it causes to swell in a sym- 

 metrical manner into a long-ovate gall-like enlargement, 

 out of which the pith and some portion of the woody tissue 

 is eaten ; the frass being closely packed away in the upper 

 end of the burrow. Dr. Wood states that the whole length 

 of the mine has never exceeded, and seldom reached the 

 length of one inch, and the substance removed is so small 

 that he is inclined to think that the larva derives a con- 

 siderable portion of its nourishment from the sap which 

 it probably licks up from the walls of its chamber. In 

 the hollow of this chamber it finally assumes the pupa 

 state, but on one occasion the pupa was found, by Mr. J. E. 

 Collin, to inhabit the gall of Cccidomyia salicis, a minute gall- 

 gnat parasitic on the sallow. 



The moth sits usually in sallows in the daytime, and may 

 be occasionally beaten out of them and secured, but is not 

 active b}- day ; in the late afternoon and at sunset it flies of 

 its own accord — often quite out of reach — over them. 

 Apparently found only in and about woods, preferring the 

 open portions where trees are few and the ground is damp ; 

 very local and usually scarce but found in Kent, Surrey, 

 Sussex, Hants, Dorset, Wilts, Middlesex, Essex, Cambs, 

 Huntingdonshire, Herefordshire and Worcestershire. So 

 far as I know that is the extent of its range in these 

 Islands. Abroad it is found through Central Europe, Spain 

 and Piedmont. 



Genus 15. ROXANA. 



Antenna thick, ciliated ; palpi short, broadly tufted, 

 carried horizontally beneath the head ; thorax smooth ; 



