THE CANADIAN ENTOxMOLOGIST. 



41 



NEW OR LITTLE KNOWN SPECIES OF APHIDID.E. 



BY JOHN J. DAVIS, BUREAU OF ENTOMOLOGY, WASHINGTON, D.C. 



Macrosiphum creelii, n. sp. 

 Wingless viviparous female. (Fig. 10. — Plate II, figs. 1, 2.) 

 Entire body pea green, excepting the head, which is a whitish 

 green, and a narrow darker green median longitudinal line on dor- 

 sum of abdomen. Segments I and II of antenna concolorous with 

 body; segments III, IV and basal half of V brownish, with darker 



Fig. 10. 



tips and the distal half of V and all of VI black; filament of segment 

 VI longest, reaching to or a little beyond tip of body; segment III 

 with 3 to 5 circular sensoria in a row at base, and segments V and 

 base of VI with the usual distal ones. Eyes blood red. Beak, 

 barely reaching coxae of second pair of legs. Legs with femora 



February, 1914 



