ANNETTE F. BRAUN. 327 



W. D. Kearfott, and three in the National Museum, collected by 

 Mr. August Busck, Washington, D. C., July, 1903. 



The mine on Ostrya is very characteristic and easily distinguished 

 from that of any other species of the flat group by the numerous 

 longitudinal folds in the loosened epidermis at maturity, causing the 

 opposite halves of the leaf to approach one another. 



Liithocolletis saccliarella Braun. 

 Plate XXIII, Fig. 10. 



Lithocolletis saccharella Braun, Ent. News, xix, 104, 1908. 



% 



Antennse pale ocherous, beyond the basal third annulate with dark; several 

 joints toward the tip dark. Palpi shining white. Face shining white. Tuft 

 whitish, golden toward the sides. 



Thorax and forewings ocherous. A white stripe on each side of the middle 

 of the thorax is continuous with a very oblique curved white streak at the 

 inner angle of the forewing. This streak, which is sometimes dark margined 

 behind, extends to the fold and is usually prolonged along the fold to unite with 

 the first dorsal streak. The first dorsal streak begins at the basal fifth, is oblique 

 and curved, and extends slightly more than halfway across the wing. The sec- 

 ond dorsal streak, at about the middle of the dorsal margin, is also oblique and 

 curved, and near the costa its apex meets that of the first costal streak, which is 

 short, oblique and placed slightly beyond the middle, thus forming an acutely 

 angled, interrupted fascia. The second costal streak at the apical fourth is some- 

 times almost overlaid with black scales. Above the dorsal cilia is a long oblique 

 white streak. All the streaks are dark margined externally. Apical portion 

 white, dusted with black. There is considerable variation in the extent of the 

 black dusting, which sometimes extends to the tornus. Marginal line in the 

 cilia brownish ocherous. Cilia pale ocherous. Alar expanse 5-7 mm. 



'Hindwings pale grayish ocherous. Cilia pale ocherous. Abdomen gray above, 

 pale ocherous below. Anal tuft ocherous. Legs whitish. Hind tarsi faintly 

 tipped with black. 



Described from specimens bred at Cincinnati, Ohio. I also have 

 specimens taken in Essex Co. Park, N. J., by Mr. W. D. Kearfott. 



The mines of this species are very com- 

 mon on sugar maples, Acer saccharum 

 Marsh, and Acer nigrum Michx., as 

 many as 25 or 30 mines sometimes occur- 

 ring on one leaf. The mine is a small 

 irregular blotch on the upper side. The 

 pupa is not enclosed in a cocoon. The 

 imagoes appear from May to June and 



Mine of L. saccharella. . . . 



again in August. 



Mr. Chambers (Can. Ent., iii, 130, 1871) confused this species 

 with L. aceriella Clem., which it in no way resembles. 



TRANS. AM. ENT. SOC., XXXIV. OCTOBER, 1906. 



