82 William T. M. Fokbes 



1. GLAUCOLEPIS Braun 



Eye-cap large. Middle spurs of posterior tibise in the middle. Fore wings 

 elongate ovate; hind wings nearly equaling the fore wings in breadth, in the 

 male; three-fourths of the width of the fore wing in the female. Fore wings 

 ( fig. 57 ) ; cubitus coincident with media, which anastomoses with radius from 

 R 2+3 to beyond middle of wing; M 3 absent; M 2 arising before separation of M and 

 R. Hind wings: media two-branched. 



1. G. saccharella Braun. Tuft brownish ocherous, eye-caps bluish white. Thorax 

 and basal fourth of fore wing blue or purple metallic; remainder of wing black 

 with a broad, bluish silvery fascia just beyond middle; cilia pale bluish. Hind 

 wings of male with oval, yellow patch of androcoma. 4 mm. 



Very long serpentine mines in leaves of maples. 



2. OBRUSSA Braun 



Eye-cap large. Labial palpi well developed. Middle spurs of the posterior 

 tibise above the middle. Fore wings elongate ovate, with fibula in the female; 

 hind wings a little over one-half the breath of the fore wings. Fore wings (fig. 

 55) ; media coalescing with cubitus at base, then passing obliquely to radius 

 beyond R 2+3 , and anastomosing with radius to beyond middle of wing. R 4 separate. 

 Mi and M 2 coalescing for a short distance beyond separation of M and R. M 3 

 absent. Cubitus becoming obsolete beyond its separation from M. Hind wings: 

 media single-branched. 



Represented by a single species whose early stages are entirely unknown. 



1. 0. ochrefasciella Chambers. Tuft ochraceous; eye -caps buff. Fore wing 

 blackish brown with a pale ocherous fascia at basal third; scattered ocherons 

 scales at two-thirds, forming indistinct transverse line in female. Last row 

 of scales at apex and cilia pale ocherous. Underside of wing of male with 

 androconia. 6.5—8 mm. 



3. ECTCEDEMIA Busck 



Basal segment of antennae enlarged and concave beneath to form an eye-cap. 

 Labial palpi somewhat longer than in Nepticula. Middle spurs of posterior 

 tibiae below the middle. Fore wings elongate ovate, pointed; fibula present in 

 the female; hind wings two-thirds to three-fourths as wide as fore wings; nearly 

 as long as the fore wings. Fore wings (fig. 54) ; media coalescing with cubitus at 

 base, then passing obliquely to radius beyond R 2+3 , and anastomosing with radius 

 to beyond middle of wing. R 4 separate. Media single -branched. Cubitus reach- 

 ing margin. Hind wings: media single-branched. 



The position of the middle spurs on the posterior tibiae, the relatively smaller 

 eye-caps, and the broader wings will distinguish this genus from those species 

 of Nepticula which have identical venation. 



The larvse of the species whose life history is known form galls on twigs or 

 petioles, or are miners in the bark of twigs. The egg is somewhat more circular 

 in outline than that of Nepticula. There is but a single generation of the moths 

 a year, as would be expected from the peculiarities of the life history. 



In all but the unicolorous E. populella, the fore wings are mottled with fuscous 

 scales, or with dark-tipped scales. Ill-defined markings are formed by the group- 

 ing of these dark scales in patches. The markings differ from those species of 

 Nepticula which resemble Ectoedemia most in structural characters. 



