42 B. C. Entomological Society 



Subtrilif Macrosiphina 



Amphorophora lactucae (Kalt). This light sreen species migrates bet- 

 ween curi-Hiits and various ligulate composites. 



Amphorophora corylinum (David). Taken on wild hazel, on twigs 



AgMSsiz. 



Macrosiphoniella millifolii (Fab.). Taken on Achillea at Agassiz. A 

 European species, very distinct by reason of its heavy black and 

 green bars. 



Macrosiphum granarium (Kirby). Very common on grains, especially 

 oats, where they cluster in the heads. Larger than Rho: prunifoli- 

 um. stays on Oramineae all the time. 



Macrosiphum rudbeckiae (Fitch). A red aphid, common on composites 

 (Solidago, etc.). Found on the stems and, when disturbed, i-aises its 

 body at i-ight angles to the stem. 



Macrosiphum rosae (L.). Occurs on roses, frequently overwinters in 

 vivi]iarous stage in Victoria. 



Macrosiphum solanifolii (Ashmead). A similar species, migrating bet- 

 ween rose and potato. 



Macrosiphum pisi (Kalt). The common pea aphis, very destructive at 

 Agassiz in 192:3. 



Macrosiphum albifrons (Essig). Sjiecimens collected by Mr. W. Downes 

 in Victoria on Lupinus arboreus are apparently this species. 



Myzus cerasi (Fab.). On common cherry, curling the leaves, partial mig- 

 ration to Lepidium. 



Myzus persicae (8ulzer). One of the few aphids apparently omnivorous. 



Myzus ribis (L.). Frequent on currants, causing blistei--like swellings 

 on leaves. 



Phorodon humili (Schrank). The common hop-plum aphis — very com- 

 mon and troublesome on hops. 



Mindarinae (Subfamily). 



Mindarus abietinus (Koch.). Taken at Agassiz on Abies grandis, curl- 

 ing young shoots. This species is considered a relic of the past with- 

 out any surviving relations. 



ERISOMATINI (Tribe) 



Erisoma americana (Riley). Causing leaf curl on American elm and 

 migrating to roots of Amelanchier florida. Both forms fiumd at 

 Agassiz. 



