734 TINEINA [lithocolletis 



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

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

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



A large 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- 



— — ^^^~^^^^^^ ^te, and it is possible that closer 

 "TTTTTZS-^'^ study may modify our views on 



^^- — the limits of some of them ; ex- 



/^ periments should be made to 



^^^^^^^^=-____^__ test the direct influence of food- 



^ o^^v plants. Imago with forewings 



ym;i lanceolate ; in repose sitting with 



^C^' forepart somewhat raised. Larva 



'^^vo stout anteriorly, usually with a 



Neuration and head of Lt</iocoWe<is vellow Or orano'e spot OU 9 



faginella. -^ ^ i rT ■ ■ • ' 



Without prolegs on lU, minmg ui 

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

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

 producing a hollow chamber ; the contracting siirface may be 

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

 constant in the same species. Pupa within the mine, wath 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. syheUa. 



,, ,, 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. heegerieUa. 



„ without basal line . . .6. 



6. Forewings with four costal and thi'ee dorsal strigulae 



6. tenella. 

 „ ,, three costal and two dorsal strigulae 



5. cramerella. 



7. Foi'ewings white, irrorated with fuscous, with dark 



bars . . . 45. comparella. 



„ more or less ochreous, with pale 



markings . . . .8 



