THE CANADIAN ENTOMOLOGIST 205 



Proboscis yellow, brown at the tip, reaching to about the 3rd 

 coxae. Cauda small, pale, blunt, with two pairs of lateral hairs. 

 On the body is a small lateral papilla between the mid and hind 

 legs on each side. 



Length — .8 to 1 mm. 



Male — Alate. Head and thorax dark, somewhat shiny. Abdo- 

 men small, dark in centre, with dark lateral spots, and dull reddish 

 in places. Cauda and anal plate dark. Penis pale yellowish. An- 

 tenna? a little longer than body, deep blackish brown; 1st segment 

 larger than 2nd; 3rd long, as long or longer than the 6th, with 

 45-50 sensoria; 4th longer than 5th, with 18-22 sensoria; 5th with 

 7-10 sensoria; 6th with flagellum about six times as long as the 

 basal area, which is about one-third of the 5th. Eyes very large, 

 dark. Proboscis rather thin and acuminate, reaching to the second 

 legs; last two segments about equal. Cornicles black, cylindrical, 

 rather narrow, imbricated, with some apical striae. Legs with 

 coxae, most of femora, apex of tibiae and the tarsi dark brown to 

 black, rest dull yellowish green. Wings with brown veins. 



Length — 1.5 mm. 



Food Plants. — All varieties of Apples and Pears, mostly on 

 former in Britain; the Medlar; Walker records it from Cratcrgus 

 oxyacantha, Sorbus ancuparia and Sorbus domesticiis; Passerini on 

 Sorbus torminalis. These latter records, I expect, all refer to the 

 true Aphis sorbi. 



Distribution. — All over Britain, but especially in the Mid- 

 lands, east, south and west; most parts of Europe, North America, 

 Africa, and apparently in Australia. 



LiFE-HISTORV IN BRITAIN. 



This species hatches out in April, any time between the second 

 week and the end of the month. It at first lives freely on the tops 

 of the bursting buds and then enters them. As the buds open out, 

 it continues to live freely on the young leaves and on the young 

 and tender growth generally. To some extent the young foliage 

 may shelter it. As the insect matures into the "Mother Queen." the 

 leaf may either curl up and partially enclose her, or she may re- 

 main exposed beneath the leaf. This "mother-queen" soon pro- 

 duces living young, and often with great rapidity; and these, as 



