INSECTS AFFECTING PARK AND WOODLAND TREES 



577 



caterpillars feed within these shelters, grow rapidly and mature by the last 

 week in Ma)', transforming to pupae among the folded or fastened leav es of 

 the bush. The inert hs of the second brood were observed by Dr Lintner as 

 early as fune 2. Eggs are quickly laid and caterpillars of the second brood 

 are soon at work. The pupal stage is limited to about five days. There 

 are two and possibly three broods in the vicinity of Albany, and Mr Chit- 

 tenden states that in the District of Columbia there may be three or even 

 four generations annually. 



Natural enemies. A single parasite, Eulophus cyriades Walk 

 was bred from this bud worm by Mr Chittenden. 



Remedial measures. About the most practical way of controlling this 

 species is to destroy the caterpillars in their web retreats or on open buds, 

 by pinching off and burning or crushing the affected parts. 



Bibliography 

 1899 Lintner, J. A. Ins. N. Y. 5th Rep't, p. 2 r 3— 1 5 



Rose leaf tier 



Olethreutes cyanana Murtf. 

 This rose leaf insect occurs as far north as Michigan, south to Missouri 

 and District of Columbia. It has been recorded from Pennsylvania and 

 probably occurs in New York State. This species has been carefully 

 studied by its describer, Miss Murtfeldt. 



Description. Larva. Length .5 inch, diameter . 1, cylindrical, tapering 

 slightly in both directions from middle, but most posteriorly ; color dark 

 green, surface glossy with two shallow wrinkles to each segment, spots 

 minute, blisterlike, each giving rise to a fine short hair. A dark vesicular 

 line extends along the dorsum, and on each side below the small dark stig- 

 mata is a pale translucent ridge or fold, bearing an irregular row of light 

 hairs more conspicuous here than elsewhere. Head polished, honey-yellow 

 inclining to olive, with a few scattered hairs, palpi white, tipped with crim- 

 son. Cervical shield polished, nearlv same color as the head, covering top 

 of segment 1. Terminal point of thoracic legs black. Prolegs concolorous 

 witli general surface. 



Pupa. Enclosed in a pouchlike case formed from a portion of a leaf 

 folded over and lined with silk, elongate oval in form, verv pointed poste- 



