190 William T. M. Forbes 



third pale golden. A pale golden basal streak parallel and close to costa for one- 

 fourth, thence deflexed and passing into golden apical part. In apical part three 

 white costal streaks and two dorsal streaks, the first at tornus, opposite first costal. 

 Black apical dot. 5-6 mm. 



Ohio; New Jersey. 



An underside miner in leaves of red and silver maple. 



4. L. quercialbella Fitch. Distinguished from the preceding by the straight basal 

 streak parallel to fold, darker margins to white streaks, and slightly darker color 

 and larger size. 7 mm. 



An underside miner in leaves of oak. 



5. L. clemensella Chambers. White; apical half of wings golden, with four costal 

 and three dorsal, dark-margined white streaks, the dark margin of the first costal 

 streak oblique and produced along costa toward base; first dorsal at tornus opposite 

 second costal. Black apical spot. 6-6.5 mm. 



Underside miner in leaves of sugar maple. 



6. L. argentifimbriella Clemens. Costal and dorsal streaks as in L. clemensella; 

 in addition, a long, golden, basal streak, margined with dark brown along its 

 lower edge. 6.5-7 mm. 



An underside miner in leaves of oak, especially white oak. 



7. L. lucidicostella Clemens. Differs from the preceding by the pale, unmargined, 

 golden, basal streak and the partial suffusion of the wing with gold below the fold. 

 6.5-7 mm. 



An underside miner in leaves of sugar maple. 



8. L. albanotella Chambers. Head white, with a few brownish scales; thorax 

 white. Fore wings pale golden brown with a broad, white, dark-margined, basal 

 streak; four white costal streaks, the first very oblique; opposite it, a broad 

 white dorsal streak, dark-margined on its upper edge, is continued as a broad 

 band along dorsal margin to base, where it is confluent with the basal streak; 

 two posterior dorsal streaks; a black apical spot. 6-7.5 mm. 



Ohio; Kentucky; Texas. 



Rather small, tentiform mines on underside of leaves of oaks; usually at th<J 

 edge of the leaf; with the loosened epidermis in numerous parallel ridges. 



9. L. hageni Frey and Boll.- Head and thorax white. Fore wings saffron brown 

 four, small, white costal streaks, dark-margined on both sides; a large, dorso-basal. 

 white patch, outwardly concave, occupying the basal fifth of wing except along 

 costa (this patch is rarely extended to costa) ; a large curved white spot at 

 middle of dorsum, and a triangular spot at tornus, both dark-margined on both 

 sides. Apical spot usually present. 7.5-10 mm. 



An underside miner in leaves of oaks, especially Q. iicolor. 



10. L. serif erella Clemens. Tuft on head dark brown; wings reddish saffron, 

 with four white costal streaks, the first, in the middle of the wing, "oblique: 

 three dorsal streaks, the first large and oblique, margined inwardly and around 

 the tip : margins of the second and third dorsal streaks, in the middle of the 

 wing, where they are dull leaden-colored, unite with the margins of the corre- 

 sponding costal streaks: margin of second dorsal streak usually heavy and con- 

 spicuous. A black apical spot preceded by bluish scales. 7—8.5 mm. 



An underside miner in leaves of oaks, particularly chestnut oaks and shingle oak. 

 (Quercus imhricaria) : distinguished bv the dense, ovoid cocoon of frass and silk. 



11. L. sexnotella Chambers. Differs from the preceding in the following respects: 

 pale golden ground color ; purer white costal and dorsal streaks, more posterior posi- 

 tion of the second dorsal streak, whose apex is opposite the space between the second 

 and third costal streaks; the margins of opposite streaks not uniting. 7-7.5 mm. 



Kentuckv; Pennsylvania. 



12. L. obsoleta Frey and Boll. Wings ocherous. with markings as in the pre- 

 ceding species, but not clearly defined, and sometimes almost entirely obscured by 

 suffusion with ground color. 8 mm. 



