134 Journal New York Entoimological Society. [Voi. xv. 



NEW GENERA AND SPECIES OF AMERICAN 

 MICROLEPIDOPTERA. 



By August Busck, 

 Washington, D. C. 



Polychrosis carduana, new species. 



Labial palpi reddish, rusty brown, touched at the tip with black. Face, head 

 and thorax rusty brown, top of head and middle of thorax sprinkled with black. 

 Fore wings dark velvety brown mixed with golden ochreous scales and with extensive 

 markings of dark metallic blue as follows : a large basal patch more or less streaked 

 with the ground-color; an outwardly oblique blue fascia before the middle of the 

 wing, terminating in a large nearly circular bluish yellow spot, touching the dorsal 

 edge ; another outwardly oblique fascia from apical third of costa, which is narrowed 

 on the middle of the wing and below this divides into two more or less crooked 

 branches, which reach the dorsal edge ; both of these blue fascise are emphasized on 

 the costal edge by two pairs of short yellow streaks, separated by a longer black 

 streak ; three more similar pairs of short yellow streaks on the costa beyond the second 

 fascia start narrow blue lines which run together in a small fascia across the tip of the 

 wing just before apex ; three rather indistinct, small, round, metallic blue dots on 

 lower part of termen ; cilia dark metallic blue. Hind wings dark bronzy brown with 

 costal edge white and cilia bluish. Abdomen dark purplish brown ; anal tuft yel- 

 lowish. Legs dark purplish brown ; tarsal joints with yellowish annulations. 

 Pterogostic and oral characters typical. Alar expanse : lo. 5-12 mm. 



Food plant : Carduiis. 



Habitat. — Hyattsville, Maryland. 



Type. — S" and 9, U. S. Nat. Mus., No. 10159. 



Described from some thirty bred specimens. The larvae are semi- 

 social and feed in numbers, more or less exposed in a light common 

 web in the tops of thistle ; they are light greenish yellow with blackish 

 brown head and thoracic shield and with shining black tubercles, 

 which give them a very pretty dotted effect. On maturity they spin 

 a piece of the leaf into a small roll for a cocoon ; the moths appeared 

 early in August. 



This is the largest of the hitherto described American species of 

 this genus, being especially more broad-winged than the others and is ^ 

 easily distinguished from all the others by the ochreous round spot oni 

 the middle of the dorsal edge. 



Hendecaneura (?) fraternana, new species. 



Labial palpi ochreous fuscous, sprinkled with darker fuscous, especially on tip 

 of second joint; terminal joint blackish. Face and head dark ochreous brown, on 

 the top of the head mixed with white. Thorax dark ochreous fuscous, each scale 



