730 NEW YORK STATE MUSEUM 



Cenopis diluticostana Wlsm. The peach twig raotli, A ii a r s i a 

 1 i n e a t e 1 1 a , is a well known boring pest of peach twigs, 

 bnt the results of this summer apparently show that some other 

 species may be involved and produce very similar injury. The 

 22d of last June Mr C. H. Stuart of Newark N. Y. sent in peach 

 tw^igs affected with what he thought was the common peach 

 twig borer. On breeding it, however, it proved to be the above 

 named insect, which was kindly determined by Prof. C. H. 

 Fernald. The notes made at the time on the material sent 

 are of interest and are here transcribed. All the buds had been 

 killed on three or four twigs, 4 to 6 inches long, and those bear- 

 ing green leaves also had masses of gum of considerable size. 

 The young fruit had also been attacked somewhat. The bark 

 and the sajtwood under the masses of fresh gum had been 

 seriously mined. In some places the mines were linear and in 

 others were expanded and very broad. Mr Stuart subsequently 

 wrote that there was hardly a branch of the tree that was not 

 affected, and that many apricot, plum, cherry, apple, peach, 

 willow and other trees for miles on each side were injured, 

 though such an attack had not been previously noted. The trees 

 recovered later, but many small branches were killed. 



This insect was described by Lord Walsingham in 1879 in his 

 Illustrations of typical specimens of Lepidoptera Hctcrocera in the 

 coUectionof theBritislimt(seum,^t 4, "North American Tortricidae,'^ 

 p. 18. The specimen from which his description was drawn up 

 came from the eastern states of North America. Prof. Fernald 

 in 1882 redescribed this species as Cenopis quercana 

 in the transactions of the American entomological society, 10:69. 

 His description of the moth is herewith transcribed. 



Head, palpi and antennae, reddish gray in the males, con- 

 colorous with the thorax and fore wings in the females. Thorax 

 and fore wings dull rust red. Basal patch, median and sub- 

 apical bands lighter in the males and inclining to yellowish on 

 the costa with strong greenish reflections when seen in an 

 oblique light, showing most strongly in the females. Fringes 

 lighter. Hind wings and abdomen above, light fuscous, lighter 

 beneath. Underside of forewings dull reddish, fuscous on the 

 cell, the lighter markings of the upper side scarcely showing. 

 Exj)anse, male 14 mm; female, 16 mm. 



