Aphid Food Plant Catalogue. 211 



Species appearing rather hairy in life,'with little dorsal tubercles 

 at base of hairs on abdomen in transverse rows. Coxa, femora, 

 and ventral surface of head olive green ; tibia and tip of beak 

 black. Comparative length of antennal segments III to VI 

 indicated by 55, 46, 43, 10-I-65 ; III with 20 to 30 sensoria rather 

 small and scattered, IV with no sensoria, frontal tubercles short 

 on outer margin and a little rounded on inner margin ; hind tar- 

 sus about nine-tenths as long as base of VI ; vein A of fore 

 wing conspicuously longer than cornicle ; cornicle about as long 

 as V with distal three-eighths strongly reticulated. 



Apterous viviparous female : general body color and pilose 

 tubercles as in alate female. Comparative length of antennal 

 segments indicated by 48, 35, 34, io-f-58; III with 10 to 15 

 sensoria on basal half of segment; cornicle about as long as V; 

 cauda about five-sevenths the length of cornicle. 



Nymphs are glistening and not pulverulent or hoary. They 

 are hairy, reddish and dark brown. 



This species is evidently distinct from Macrosiphum car- 

 nosa Buckton. It was collected at Orono from stem of term- 

 inal shoots of Impatiens bi flora, August 25-27, 191 5. 



Type in collection of Maine Agricultural Experiment Sta- 

 tion, No. 1 15-15. 



MACROSIPHUM AMELANCHIERICOLENS N. SP. 



Alate viviparous female : dark bodied with black antennae, 

 legs and cornicles, and with dusky wings. Frontal tubercles 

 strong and divergent. Comparative length of antennal seg- 

 ments III to VI indicated by 55, 45, 38, 10+45. HI with about 

 50 sensoria scattered over nearly its whole length. IV with no 

 sensoria. Cornicle shorter than III and longer than IV with 

 more than one-fifth of its length reticulated at distal part. Cauda 

 comparatively short and rugged. 



The comparative length of antennal segments III to VI of 

 the apterous female are indicated by 55, 40, 30, 10+30. Ill 

 with about 40 sensoria. 



This apparently distinctive aphid was collected in June at 

 Orono 191 4, from Amelanchier spicata Lam. I have never seen 

 it since. 



