404 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 3 



Aphis sorhi Kalt., Figs. 3, 4 and 5. Taken at Webster, Amherst, 

 Chicago, Geneva, Hood River and Portland, Ore., on apple. At 

 Geneva and Webster this species was very abundant, rolling the 

 leaves in a manner similar to the work of A. pomi. Prof. E. P. Taylor 

 sent me this species from a few trees near Grand Junction, Colo., in 

 1907, which is the only record for this state. 



In Bulletin 133 of the Colo. Experiment Station I referred to' this 

 louse as A. pyri Boyer, and am not now sure but it is Boyer's species, 

 but a larger number of specimens for comparison have led me to think 

 that it is sorhi of Kaltenbach, though the antennse of the apterous 

 louse are but slightly shorter than the body, and in the alate form 

 they are somewhat longer, and the cornicles of the apterous form are 

 very stout and tapering towards the free end as shown in Fig, 5. 



Aphis riparice Oest., (?) Figs. 6 and 7. Very abundant on wild 

 grape at Fort Lee, Washington, and Webster, on leaves, tendrils and 

 tender new growths of the vine. This may be the vitis of Scopoli, 



Aphis asclepiadis Fitch., Figs. 8 and 9. Taken at Chicago, Portland, 

 Mich., Geneva, and Webster on Asclepias sp., and at Detroit on dog- 

 bane, Apocynum. sp. We have taken this species in Colorado at Fort 

 Colhns. The reference by Cowen in Bull. 31 of this station was an 

 error. 



Aphis pomi De G., Figs. 10 and 11. Taken on apple trees at Chi- 

 cago, Portland, Lansing, Detroit, Albany, Geneva, Webster, New 

 York City, Portland, Ore., and Hood River, Ore. This is an abun- 

 dant species wherever the apple is grown in Colorado. 



Aphis gossypii Glover, Figs. 12 and 13. In Chicago, abundant on 

 Philadelphus coronarius and Carduus arvensis (Canada thistle); in 

 Detroit on Pyrus cornaria, a few thrifty colonies, and at Central Park, 

 New York City, on Bursa h. pastoris. Abundant on the eastern slope 

 in Colorado where melons, cucumbers, squashes and cantaloupes are 

 grown, but unknown upon the western slope. 



Aphis spriceella Schouteden, Figs. 14 and 15. What I have taken to 

 be this species was a very common louse upon bridal wreath, Spircea 

 prunifolia. Taken at Lansing (very abundant), Geneva, Detroit, 

 Albany, New York City, Washington, Springfield, Webster, and 

 Woods Holl. In general appearance resembling closely a small 

 A. pomi. Was common one year, 1907, on spirse on the campus of 

 the Agricultural College at Fort Collins, but has not been seen in the 

 state since. The antenna is hardly distinguishable from pomi except 

 in size. 



Aphis cardui L., Figs. 16 and 17. Taken on thistle, Carduus sp. 

 at Geneva and very abundant about Portland and Hood River, Ore., 

 and at Kansas City, Mo. 



