MAINE) APHIDS OF THE ROSE FAMILY. 257 



noticed and this acquired wings July i. The first grain gen- 

 eration born of migrants from Crataegus is thus seen to com- 

 prise both alate and apterous females. Fig. 90, H, is a draw- 

 ing of the antenna of a spring migrant and Fig. 90. G, that 

 of the next generation reared on oats in confinement, both being 

 done to the same scale. 



This species whether found on the winter or summer host 

 is characterized in the winged forms by M branching the sec- 

 ond time very near the margin of the wing. In fact M not 

 infrequently runs way to the edge of the wing before branch- 

 ing more than once thus giving a venation sudh as we find in 

 the genus Toxoptera, a 2-brahched M. 



Maine Collections from Crataegus, 33-12, 39-13, 103-14. 



Aphis brfvis Sanderson. The Long-beaked Clover Aphid. 

 (Figure 94, D. Figure 95, K. Figure 97, B.) 



This species which was described by Professor Sanderson 

 from the quince, is very abundant upon hawthorn in Maine. 

 It migrates for the summer to clover and sweet peas and possi- 

 bly other legumes. 



It resembles hakeri in having very short caiida and corni- 

 cles, but is at once separated from that species by its longer 

 beak which reaches well beyond the second coxa and some- 

 times to the third. The antenna and the stigma of the wing, 

 further separate this species from hakeri as do also the blunter 

 lateral tubercles of the prothorax and abdomen. 



On the hawthorn it lives in the leaves causing them in the 

 spring to become distorted into dark purple curls. 



Aphis bakfri Cowen. The Short-beaked Clover Aphid. 



(Figure 94, E. Figure 95, I.) 



I have made a single fall migrant collection of this species 

 from hawthorn. (104-14). Oct. i, 1914. The figures show 

 the characters of the antenna and wing. This species is dis- 

 cussed as an apple pest by Gillette and Taylor (1908). Like 

 brevis, which it resembles in the shortness of its cauda and 

 cornicles, it migrates to clover for the summer. 



