804 MICROPTERYGINA [micropteryx 



less than |. Forcwings ratlier elongate, })ale shining golden, 

 strigulated and spotted with pnrple, veins posteriorly jjurple ; a 

 rather indistinct transverse dorsal spot of ground-colour befoi-e 

 tornus, not reaching half across wing; cilia light grey; 9 

 absent. Hindwings grey, towards apex purplish-tinged. 



Britain to Sutherland, common ; NC. Europe ; 4. Larva 

 whitish; head whitish, naouth pale brown; 6-11 with small 

 projections : in blotch in leaves of birch ; 5. 



4. M. Kaltenbachii, Stt. 9-11 mm. Head fuscous, some- 

 what mixed with grey-whitish. Antennae ^. Forewings elon- 

 gate, pale shining bronzy -golden, more or less suffusedly 

 strigulated or sometimes almost wholly suft'used with reddish- 

 purple ; a rather indistinct subtriangular dorsal spot of ground- 

 colour before tornus, not reaching half across wing ; cilia 

 bronzy -grey ; 9 absent. Hindwings grey, towai'ds apex purplish- 

 tinged. 



5. England to Essex and Hereford, local ; Belgium, Germany; 

 4. Larva whitish ; head pale brown, mouth darker ; two 

 greyish-tinged marks on 2; G-11 with minute pixijections : in 

 blotch in leaA'es of hazel : 5. 



5. M. semipurpurella, Siph. {inronspicmJld, Wood) 10-15 

 nun. Head grey. ^Vutennac §. Forewings elongate, bronzy- 

 purple, more or less sprinkled with pale shining golden ; an 

 indistinct usually small transverse pale golden dorsal spot 

 before tornus, sometimes almost obsolete ; cilia bronzy -grey, on 

 dorsal spot ochreous-whitish ; 9 absent. Hindwings with hair- 

 scales except towards margins posteriorly, bronzy-grey, pos- 

 teriorly purplish-tinged. 



Britain to the Shetlands, E. Ireland, common ; N. and C. 

 Europe ; 4. Larva whitish ; head pale ochreous-brown, mouth 

 darker : in l)lotch in leaves of birch ; 5. 



6. M. Sangii, Wood. W -11 mm. Head whitish-grey-ochreous, 

 more or less mixed with dark fuscous. Antennae j. Forewings 

 elongate, bronzy -purple, with more or less numerous pale 

 shining golden irregular spots : a subtriangular pale golden 

 dorsal spot before tornus, reaching half across wing ; cilia 

 bronzy-grey, on dorsal spot ochreous-whitish ; 9 absent. Hind- 

 wings bronzy-grey, towai'ds apex purplish-tinged. 



S. England to Herts and Hereford, Durham (/), local ; not 

 recognised elsewhere ; 4. Larva grey ; head black, centre and 

 mouth brown ; 2 with two groups of black spots : in brownish 

 blotch in leaves of birch ; 5. 



7. M. unimaculella, Zett. 9-1 1 mm. Head fuscous, mixed 



