Lepidoptera op New York and Neighboring States 197 



costal spot, beyond which is a white streak; an oblique dorsal streak lrom just 

 before tornus sometimes extended to form inner margin of dusted apex. 6.5-7.5 mm. 

 Larvae gregarious, in brownish-yellow, blotch mines on leaves of oaks, principally 

 white oak. 



50. L. macrocarpella Frey and Boll. Close to cincinnatiella; differs by the fol- 

 lowing characters: a small tuft of brown scales in apical cilia (wanting in cin- 

 cinnatiella) ; larger size (8.5-9 mm.), darker, less shining ground color, more 

 oblique, and slightly curved, dorsal arms of fascia. 



Upper side blotch on oak; each mine with a single larva. 

 Eastern, southern, and western United States, chiefly near coast. 



51. L. saccharella Braun. Fore wings ocherous; an oblique, curved, white streak 

 at base of inner margin, usually uniting with an oblique dorsal streak at basal 

 fourth; an acutely angled, slightly interrupted fascia at middle, a white costal 

 spot beyond, and a long, oblique, dorsal streak opposite; apex densely dusted. 

 5—7 mm. ■ 



Small, irregular blotches on upper side of leaves of sugar maple, and occa- 

 sionally on other maples. 



52. L. caryaefoliella Clemens. Fore wings reddish ocherous; an indistinct, oblique, 

 curved streak from base of dorsum; two ahgulated fasciae, placed as in L. cincin- 

 natiella; a third angulated fascia formed by the meeting of two, opposite, slightly 

 oblique streaks; a small, white-dusted, costal spot beyond; apex black-dusted on a 

 white ground. 6—7 mm. 



Irregular blotches on upper side of leaves of hickory and, occasionally, of 

 butternut and walnut. 



53. L. lentella Braun. Markings at base and two angulated fasciae as in pre- 

 ceding species; beyond second fascia, on costa, a broad white spot, margined on 

 each side and below with black scales; opposite it a long, oblique, dorsal streak, 

 opposite whose apex a second small, white-dusted, costal spot; apex of wing dusted 

 with black on a white ground, 6.5-7 mm. 



United States west to Arizona. 



Blotch mines on birch and hop hornbeam, often containing several larvae. 

 Epidermis much wrinkled, bending leaf into a fold. 



54. L. conglomeratella Zeller. Fore wings reddish saffron; two oblique costal 

 streaks, at one-third and one-half, respectively; a costal spot at two-thirds; a 

 narrow, white streak from base along dorsal margin nearly to tornus, then 

 deflexed and passing obliquely toward apex, forming the inner margin of the 

 apical dusting and sometimes partially obscured by the latter; a tuft .of brown 

 scales in the apical cilia. Antennae annulate with brown. 7.5-9 mm. 



New Jersey to Ohio; south and west to Texas and California. 

 Blotch mines on oak, especially live oak (Quercus virginiana) . 



55. L. ulmella Chambers. Differs from L. conglomeratella by the more oblique, 

 costal streaks, the absence of tuft of scales in apical cilia, and the white basal third 

 of antennae. 6.5-7 mm. 



Blotch mines on upper side of leaves of elm. 



56. L. quercivorella Chambers. Distinguished from both ulmella and conglome- 

 ratella by dorso-basal, white streak extending scarcely beyond the middle and not 

 connecting with the oblique, dorsal streak before tornus. 6.5-7 mm. 



A small blotch mine on upper side of leaves of oak, especially red oak (Q. rubra), 

 and usually placed near the tip of a lobe. 



57. L. platanoidiella Braun. Fore wings reddish ocherous; an oblique, costal 

 streak at one-third; angulated fascia at middle, its external dusting being pro- 

 longed backwards at angle; a pair of white streaks at apical third; a small,- white 

 spot on costa between the costal streak of the pair and the white streak forming 

 the inner margin of the apical dusting. 6.5-8 mm. 



