44 Journal New York Entomological Society. [Vol. xxviii. 



a central cavity and pull the small leaves together. When full grown, 

 about the last week in June, each constructs a rather dense, whitish 

 cocoon and anchors it to a partly folded over section of a leaf, 

 usually near the tip. Moths emerge during the last of June and first 

 part of July and full-grown larvae are again in evidence during the 

 last half of August. 



About September 15 moths again appear and probably deposit 

 eggs on the tips of the rosettes as Mr. West discovered at Hacken- 

 sack, N. J., on November 5, very small, half-grown and several full- 

 grown larvae at the bases of the young leaves in the centers of large 

 rosettes. These leaves showed evidence of feeding and some of the 

 larvae had webbed up the tender foliage somewhat. Others were 

 encased in loosely spun cocoons in the fold of a leaf. It is thus evi- 

 dent that overwintering takes place in the partly to full grown larval 

 stages in the rosette. 



On June 20 at Riverton, N. J., Crcmastus cpagoges Cush. (identi- 

 fied by R. A. Cushman) was bred from the larva and on July 10 at 

 the same locality Actia pilipcnnis Fall, (identified by J. M. Aldrich). 

 At Red Bank, N. J., August 8, Tachniphyto ccnca Coq. (det. J. M. 

 Aldrich) was bred from the larva. 



Mompha eloisella Clem. 



This is a common and widespread species which was described by 

 Clemens in i860 (Proc. Acad. Nat. Sci. Phil., 171, i860). Winn 

 (Lep. Quebec) lists it from Montreal VI (W.) and Rosemere VI 

 (W:) in the pith of evening primrose. Smith (Insects of New Jer- 

 sey) records it as occurring throughout New Jersey, the larva in the 

 stalks of evening primrose throughout the winter and states that 

 pupation takes place in late May, the adults issuing in June. 



This is the most abundant of all the species of Mompha associated 

 with the evening primrose and occurs at practically every place in 

 New Jersey where its food plant grows. The larvae develop in the 

 stems and overwinter in the dried stalks. 



Egg. — Length, 0.41 mm. Width 0.27 mm. Oval, translucent, 

 chorion with interrupted, somewhat irregular, longitudinal ridges. 



Full Grozvii Larva. — Length 13 mm. Width 0.17 mm. Yellow- 

 ish white ; elongate ; segmentation distinct ; constriction between seg- 

 ments prominent; head light reddish brown, irregularly mottled; 



