122 THE CANADIAN ENTOMOLOGIST 



C. P. Gillette has reported it from liliaceous plants, asparagus 

 fern, Aquilegia, Rumex sp., and Vinca in greenhouses, while 

 the writer has found it common and often injurious to 

 such greenhouse plants as Vinca, Asparagus fern, Adiantum 

 hybridum, and calla lily, at Chicago, 111. • Specimens of this aphidid 

 have been received from Prof. R. H. Pettit, who collected it 

 on calla lily and Freesii in greenhouses at East Lansing, Mich. 

 Recently (February 1, 1913) the writer found this species very 

 common on sprouts of various plants in the cold plant room of the 

 Botany Department of the Purdue Agricultural Experiment Station 

 at La Fayette, In J. LFre it was found breeding abundantly on 

 the following plants: Anzrmne, cyllnirlca, Aquilegia cimiensis, 

 Arabls, Artemisia dracuncuhlies, Aster dumosus, A. maltlfjrmis, 

 A. panlculatus, Cirduus fijJmanli, Malvastrum cocclneum, Pj'ymali 

 canadensis, Rumex oblusifilius, Sambucus' canadensis, Semch 

 (foliosa) serra (?) (so labslsd), Steironemi lance jlatum, Viola, 

 nuttallii. It was also breeding on the following, but not so abun- 

 dantly: Aquilegl flavescens (so labeled), Ranunculus acris, Rul- 

 beckla laciniata, and SolldagD missouriensls. From this it will b? 

 seen that this species is capable of living and breeding on a large 

 variety of plants, and in this respect, as well as in its habits, it 

 resembles Myzus persicce (in greenhouses) and, in fact, the two 

 species are not infrequently found intermingled in the same 

 colonies. Even in the cold" plant room just mentioned, where 

 during the past winter the temperature was often as low as 40° F., 

 no sexual forms were observed. 



We have recently received specimens of this species from Dr. 

 Albert Tullgren of Sweden, and are able to identify our American 

 forms as the same as the European. It has, so far as we are able to 

 learn, always been referred to the genus Macro siphum by European 

 students of Aphididse, but it is without doubt a typical member of 

 the genus Myzus. 



For a complete description of this species see Prof. Gillette's 

 paper on "New Species of Colorado Aphidida?, with notes upon 

 their life-habits," in the Canadian Entomologist, volume 40, page 

 19, 1908. 



