TINEINA [uTHOcoij.ims 



Forewings : lb simple, 3-5 absent, 7 to costa, 8 absent, 10 

 absent. Hindwings ^, linear-lanceolate, cilia 4-5 ; transverse 

 vein absent between 2 and 5, 3 absent, 4 absent, 6 absent. 



A largo genus, principally European, represented less freely 

 in other parts of the Northern hemisphere, and in Australia by 

 a single species. The species are often very closely related 

 ^_— — — =~-^_ together and hard to discrimin- 



~^^^^ = " a * ' an( ^ 'k ' s possible that closer 

 f S^— 7T77[7I>-^^ study may modify our views on 



the limits of some of them ; ex- 

 periments should be made to 

 test the direct influence of food- 

 ^v plants. Imago with forewings 

 Wv '.',.' lanceolate ; in repose sitting with 

 %)) forepart somewhat raised. Larva 

 "vO stout anteriorly, usually with a 

 NeuraUonamihmiofiittoeoJWi. yellow or orange spot on 9, 

 without prologs on 10, mining in 

 leaves, seldom in bark of shoots ; tho mine is a small blotch, of 

 which one surface is silk-lined and caused to contract, thus 

 producing a hollow chamber; the contracting surface may be 

 either on the upper or under side of the leaf, but is always 

 constant in the same species. Pupa within the mine, with or 

 without a cocoon. 



1. Ground-colour of forewings clear shining white . 2. 



„ ,, not clear white . 7. 



2. Forewings with two or more angulated fasciae . 3. 



„ without two fasciae . . .4. 



3. Last fascia straight . . .4. sylvella. 



„ „ angulated . . .3. hortella. 



4. Forewings with an oblique fascia from base of costa 



1. roboris. 

 „ without such fascia . . .5. 



5. Forewings with fuscous median line from base 7. heegeriella. 



,, without basal lino . . .6. 



6. Forewings with four costal and three dorsal strigulae 



6. tenella. 

 „ „ three costal and two dorsal strigulae 



5. cramer ella. 



7. Forewings white, irrorated with fuscous, with dark 



bars . . .45. comparella. 



„ more or less ochreous, with pale 



markings . . . .8 



