164 ENTOMOLOGICAL NEWS [April, 'l2 



and parallel to it. There is sometimes a third ocherous streak just be- 

 low the costa for about one-half the wing length. There are three or 

 four ocherous streaks lying between the costal veins. In the darker 

 specimens these streaks and also the longitudinal streaks before 

 described are more or less flecked with fuscous scales. Cilia somewhat 

 ocherous. Hindwings grayish ocherous, cilia the same. Legs whitish, 

 the anterior pair dark brown along their outer sides. Expanse : 13-14 

 mm. 



Chambers described this species from larval cases only, not- 

 ing particularly the extreme length of the cases. The largest 

 cases are almost an inch long, although the usual length is 15 

 to 18 mm., almost straight and cylindrical, but slightly taper- 

 ing and roughly three-valved at the apex. The full-grown 

 cases are found upon the leaves of Ironweed (Vernonia fas- 

 ciculata Michx.) during May and the early part of June. One 

 leaf may contain as many as six or seven mines. The mines 

 are irregular in shape, often a centimetre or more across. At 

 the time of pupation the case is usually attached to the stem. 

 The imagoes appear during the early part of July. 



Chrysopeleia purpuriella Chambers. 



Chrysopeleia purpuriella Chambers, Can. Ent. VI, 73, 1874; XI, 9, 

 1879; Psyche, III, 64, 1880; Dyar, List N. A. Lep., 6133, 1902. 



This species was originally described from captured speci- 

 mens and later (Can. Ent., Vol. XI) Chambers says, "Its food 

 plant is unknown and certainly its habits of life must differ 

 from those of ostryacella, for no mine similar to that of the 

 latter is found in this vicinity." A year later, in Psyche, Vol. 

 Ill, Chambers infers that the food plant of C. pnrpnriclla is 

 Locust (Robinia pseudo-acacia L. ) and that certain small mines 

 on these leaves are those of this species, because a single speci- 

 men emerged among leaves of this plant which were collected 

 for breeding other species. 



I have bred specimens which I consider to be undoubtedly the 

 true Chrysopeleia purpuriella Chambers, from mines on Red 

 Oak very closely resembling the mines of C. ostryacella on 

 Ostrya. The mine begins either at the margin of the leaf or 

 along a vein and gradually broadens, its outlines being some- 

 what more irregular than those of C. ostryaeella. It shows the 



