ohrysoohsta] ELACI1 ISTIDAE 677 



terminal shorter, acute. Posterior tibiae rough-haired. Fore- 

 wings with scale-tufts on surface; lli furcate, 5 absent, 7 and ft 

 stalked or coincident, 7 to costa. Hindwings jj, lanceolate, 

 cilia 8-4 ; 5 and G or (> and 7 sometimes stalked, transverse vein 

 sometimes partly absent. 



A small genus, at present not satisfactorily identified outside 

 the European region. Imago with forewings elongate-lanceolate. 

 Larva feeding in bark, fruit, or shoots of trees or shrubs. 



1. Forewings partly orange . . . .2. 



,, not orange . . . .3. 



2. Costa broadly black to about middle I. bvmaculella. 



,, only black at base . . .2. linncella. 



3. Head orange-yellow . . 3. aurifrontclla. 



,, not yellow . . . . .4. 



4. Head white .... 5. atra. 



,, not white . . . .5. 



5. Forewings with four large scale-tufts . 6. rhamniella. 



,, „ two scale-tufts . . 4. vinolentella. 



1. C. bimaculella, II w. 10-12 mm. Head and thorax metallic 

 brassy-black. Antennae with apex white. Forewings bronzy- 

 blackish ; an elongate orange blotch towards base below middle; 

 a large orange blotch occupying apioal half of wing except 

 margins, extending to costa at | ; silvery-metallic scale-tufts 

 above dorsum before middle, below middle of costa, and beyond 

 tornus. Hindwings dark bronzy-fuscous. 



England to Westmoreland, scarce and local ; Germany, 

 Austria; 6, 7. 



2. C. linneella, CI. 10-13 mm. Head and thorax metallic 

 brassy -black. Antennae with apex white. Forewings bright 

 orange ; base black, emitting a fine silvery-metallic costal streak 

 to J, and a shorter projection in disc ; dorsum slenderly, termen 

 and apical J of costa more broadly bronzy-blackish ; a silvery- 

 metallic scale-tuft above dorsum before middle, another below- 

 middle of costa, and a third beyond tornus; a silvery-metallic 

 costal dash about f . Hindwings dark bronzy-fuscous. 



Kent, Middlesex, Gloucester, N. Ireland, very local but 

 common where it occurs ; C. Europe, Asia Minor ; 7, 8. Larva 

 yellow - whitish ; head pale brown: in bark of Tilia, especially 

 in towns; 10-. r ). The imago rests on the trunks. 



8. C. aurifrontella, lib. (flavicaput, Hw.) 11-14 mm. Head 

 orange-yellow. Palpi yellow, basal half blackish, terminal joint 

 very short. Forewings purplish-black ; plical and second discal 

 stigmata black, raised. Hindwings dark fuscous. 



