Pear-borer 

 (Nephopteryx rubrizonella, Rag.). 

 By M. Matsumura. 



Agricultural College, Sapporo, Hokkaido. 

 With Pl. 1. 



There are two species of our pear-borers belonging to the genus 

 Nephopteryx, the present one being much larger than the other. In 

 1889, the smaller spscies was described by Mr. 8. Ikeda of the Ag- 

 ricultural College of Tokyo, in the Zoological Magazine, Vol. 1, page 99 ; 

 but its life history was not known clearly at that time. By this larger 

 borer our pear growers have been losing every year 30-50% <>!' their 

 crops, it being a much more troublesome insect than the apple-borer 

 I have described in a recent number of the Zoological Magazine. 

 Entomologically it belongs to Microlepidoptera, group Pyradina, family 

 Phycidœ, and its generic and specific name was kindly identified for 

 me by Mr W. J. Holland of Pittsburg, through the kindness of Mr. 

 O. Howard, the first Entomologist in the Department of Agriculture, 

 U. S. A. 



Imago — Antennae curved over the basal joint, the latter with a 

 scaly tuft ; labial palpi compressed, with a long end joint ; maxillary 

 palpi small and filiform ; anterior wing with J 1 veins, branches 4th. and 

 5th. not being stalked ; ground color varying form grayish brown to 

 grayish black, crossed by two equidistant irregularly sinuated, grayish 

 bordered black lines. Outer margin and basal half much deeper in color, 

 with a black disco-cellular marking in the middle of the wing. Hind 

 wing dark gray, with 8 veins, branches 3rd., 4th., and 5th. springing 

 from a common stalk which rises from a hind angle of the closed 

 mid-cell. 



