Vol. XXXl] ! \ TOMOLOGICAL NKWS 65 



less coined names being entirely acceptable. All classes 

 of names should be short and euphonious. Systematic work 

 on insects in most cases is a labor of love and as much care 

 and genuine interest should be devoted to the selection or 

 invention of names for new forms as to any other part of the 

 work. 



Descriptions of New North American Acalyp- 



trate Diptera. II.* (Trypetidae, 



Sapromyzidae) 



By E. T. CRESSON Jr., The Academy of Natural Sciences, 

 Philadelphia, Pa. 



Rhagoletis juglandis new species 



cf- General color, tawny; with the following parts paler to nearly- 

 white; frontal orbits, face, occiput, mouth parts, broad stripe from humeri 

 to base of wings, scutellum except base, squamae, apices of second to 

 fourth abdominal segments, coxae, and tarsi except apices. Halteres lemon 

 yellow. (Bases of second to fifth abdominal segments are dark. Probably 

 due to decomposition of contents). Wings hyaline with black bands as 

 follows: First band straight from costal cell over anterior cross-vein to 

 beyond fifth vein; second band straight and parallel to first, from costa, 

 midway between tips of first and second veins, to and including posterior 

 cross vein and attaining inferior margin of wing; an apical marginal band 

 from before tip of second to and beyond tip of fourth veins. Veins pale 

 basally, becoming black apically. Generally subopaque species; facalia, 

 mesonotum laterally, most of scutellum, abdomen and legs, shining. 

 All bristles black except the post verticals and few others as in suavis Lw. 



Structurally similar to suavis Lw. with similar chaetotaxy. The pos- 

 terior cross vein is straight and perpendicular to fourth vein, and the wing 

 is less tapering apically. Length 4 mm. 



Type. cf ; Carr Canyon, Huachuca Mountains, Arizona, 

 July to August, 1919, (C. R. Bierclermann; mining the exo- 

 carp of Juglans regia variety), [A. N. S. P. No. 6235]. Para- 

 types. 12 cf; topotypical. 



This insect was sent to Dr. Skinner by Mr. C. R. Bieder- 

 mann, who calls it the " Black Walnut-fly. " He says " . . 

 it appears toward the end of June, deposits its eggs in the 



* Part I. Ent. News. \\\ , 457-460, 1914. 



