391 



Lampa mentions this Aphis as harmful in Sweden {Upp- 

 satser Praktisk Entomologi, 17, p. 5, 1907). 



It was recorded for the first time in America from Maine, 

 along the Atlantic coast southwards to North Carolina and 

 westwards to Wooster, Ohio, in 1899, ^^d was also observed 

 in Nova Scotia and Ottawa, Canada (Notes upon the de- 

 structive Green Pea Louse {Xcctarophora destructor) for 1900, 

 Bull. 26, N. Se. Ü. S. Dep. Agri. Div. Ent., p. 55, 1900). 

 Johnson also recorded it from Massachusetts and Vermont in 

 July and August, and also from Chilhcothe, Ohio, Long 

 Island, N.Y., portions of New Jersey, and Wisconsin, in August. 



Johnson, who first observed this pest in May 1899, described 

 it as Nectarophora destructor in the Canadian Entomologist 

 (February number). 



Johnson refers in this paper to the great damage done to 

 both red and crimson clover, and he considers red clover its 

 original food plant and thus thinks it primarily a clo\er pest. 



In the south he found it spent the winter in the adult state 

 in clover fields, but suggested that farther north it may pass 

 it in another form. 



Newell and Rosenfeld {State Crop Pest Commission of 

 Louisiana, Circ. No. 27, p. 108, 1909) refer to its damage in 

 Louisiana and to its wintering in the egg stage. They refer 

 to it as Xcctarophora pisi Kalt. 



D.wiDSON records it from California on Vicia sp. (?), un culti- 

 vated beans, and on Urtica holoserica [Journal Eco. Ent., iii., 

 P- 380). 



CiIllett took this Aphis on Trifolium pratense at Albany, 

 N.Y., July ist, and also received specimens from ^laryland, and 

 says it is very abundant in Colorado on both eastern and 

 western slopes, where it was taken on the (iarden Pea, Lat/iyrus 

 odoratus, and Alfafa, Mclilotus alba. He identified them from 

 specimens taken by Cockekell from Susse.x, England, on peas 

 in July 1909. His figures of the antenna and cornicle of the 

 winged female agree with our European pisi, but the cornicle 

 of the apterous female (PI. .W'i. lig. 24) ccrtainh- docs not, 

 as there is no trace of apical reticulation in true pisi such as he 

 figures. He also mentions the sensoria at the base of segment 

 three as varying from 2 to 3. 1 iia\c never seen more than 



