" PINK AND GREEN APHID OF POTATO. 213 



the plants listed in the foregoing paragraph and good colonies 

 of young both pink and green, were also feeding readily upon 

 all these plants. They were along the tender terminal stems, on 

 fresh leaves or in the case of the asters particularly abundant 

 upon the blossom petals. 



Whether this aphid would accept so varied a diet immediately 

 upon leaving the rose in the spring or not we do not know. 

 After a summer upon potato it is apparently ready to play the 

 role of a general feeder, judging from the wide range of food 

 plants just recorded. 



Maine collection data for eight seasons indicate that solani- 

 folii prefers decidedly the rose in the spring and the potato in 

 the summer, for it is commonly abundant upon these two and 

 has not yet been conspicuous upon other vegetation here. There 

 is however, no reason to suppose that any aphid will accept 

 indoors a plant which it would not feed upon out of doors if 

 conditions were favorable, and it might easily be present in small 

 colonies without being detected. 



FOOD PLANTS. 



GRAMINEAE. Grass Family. 

 Zea mays L.' Brkton, W. E. 1913. 12th Rept. St Ent. of Conn. 



IRilDACEAE. Iris Family. 

 Iris sp. cultivated. Patch, Edith M., 1912. Me. Agr Expt. Sta. Bui. 202. 

 Gladiolus sp. Patch, Edith M. 1912. Me. Agr. Expt. Sta. Bal, 202. 



POLYGONACEAE. 



Fagopyrum esculentuni M-oench. Buckwheat. Patch, Edith M. 1907, 

 field collection, (16-07). 



OHENOPOiDiACEAE. Goosefoot Family. 

 Cheno podium, album L. Patch, Edith M. 1915. Notebook record for 

 Sept. 15. Greenhouse material. 



AMARANTHACEAE. Amaranth Family. 

 Amaranthus retroflexiis L. 'Redroot pigweed. Patch, Edith M. 1915. 

 ■ ■ Notebook record for Sept. 15. Greenhouse material. 



.. -- CRUCIFERAE. Mustard Family. 



Brassica Rapa L. Turnip. Patch, Edith M. 1905, field collection (62-05). 

 CapscHa Bursa-pastoris (L) Patch, Edith M. 1907. Me. Agr. Expt. 

 Sta. Bui. No. 147, p. 244. ■ 



