344 AMERICAN MICRO-IvEPIDOPTERA. 



liitliocolletis corylisella Chauibers. 



Plate XXIV, Fig. 8. 



Lithocolletis coryliseUa Chambers, Can. Ent., iii, 111, 127, 1871. — Dyar, Bull. 52, U. 



S. Nat. Mus., 1902, No. 6308. 

 Sj'n. coryliella Chambers, Can. Ent., xi, 90, 1879.^ — bifasciella Walsiugbam, Proc. 

 U. S. Nat. Mus., xxxiii, 223, 1907. 



Face, palpi and antenuse white; antennae annulate with brown above. Tuft 

 ocherous. 



Thorax and forewings reddish ocherous. A short white streak from the inner 

 angle to the fold dark margined externally. Two white fasciae dark margined 

 externally; the first at about the basal fourth, oblique, nearer the base on the 

 dorsum, and slightly convex above the fold. Second fascia at about the middle, 

 nearly erect. At the apical fourth is a white costal streak, and opposite it a 

 nearly erect dorsal streak above the cilia; both are dark margined externally. 

 In the apical portion of the wing is an oblique white streak, not extending 

 through the costal cilia, dusted with fuscous scales behind and around its apex. 

 This dusting is sometimes almost lacking. Hinder marginal line in the cilia 

 brownish, indistinct. Cilia ocherous, grayish toward the tornus. Expanse 6.5- 

 7 mm. 



Hindwings and cilia grayish, tinged with ocherous. Abdomen gray. Legs 

 whitish ocherous. 



The blotch mines on the upperside of hazel, Corylus Avierlcana 

 Walt., are very similar to those of ostryarella Chamb. However, the 

 silken chamber in which the larva hibernates is of the usual type, 

 the epidermis not being raised in a circular ridge as in ostryarella. 



The male specimen which Lord AValsingham described as bifas- 

 ciella Cham, is one of the series from the Beutenmiiller collection, 

 bearing the record number 118, and bred on Corylus, and identical 

 with specimens of coryliseUa Cham. 



Liilliocolletis sesciilisella Chambers. 



Plate XXIV, Fig. 9. 



Lithocolletis icsculisella Chambers, Can. Ent., iii. 111, 1871. — Walsingham, Ins. 



Life, ii, 53, 1889.— Busck, Proc. Ent. Soc. Wash., v, 190, 1903. 

 Syn. xsculella Eiley, Smith's List Lep. Bor. Am., 109, 1891. 



Antennae whitish, banded above with dark brown. Face and palpi white. 

 Tuft ocherous, whitish behind. Thorax and forewings reddish ocherous. A 

 whitish streak on each side of the thorax is continuous with a slightly paler 

 shade on the forewings, from the inner angle to the fold. Two white jjosteriorly 

 dark margined fascise. The second, at about the middle of the wing, indistinctly 

 obtusely angled near the costa, with its dorsal arm nearer the base. The first 

 fascia, half way between this and the base of the wing, is broken near the costa. 

 Its dorsal arm is more oblique and diverges from the second fascia. At the 

 beginning of the cilia is a small costal spot, and ojiposite it a longer almost per- 

 pendicular dor.sal streak, both black margined behind. Apical black dusting 

 more or less dense, and edged internally by an oblique white streak, sometimes 



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