642 



IXDEXi 



430, 463 ; measures against, 239, 

 ■367, 389 ; natural enemies of, 39, 

 101. 406. 407, 408, 430, 599 ; 

 relation of. to mosaic disease of 

 cucumber. 306. 



Aphis grossiilariae, on currants in 

 Denmark, 364. 



Aphis helianthi, on Helianthiis 

 rigidits in New York. 284. 



Aphis illinoisensis, on grape in 

 Mexico. 116. 



Aphis juglandicola (see Chromaphis). 



Aphis laricifex (see Lachnus). 



Aphis lutescens, on Asclepias cornnta 

 in New York, 284. 



Aphis maidiradicis (Corn-root 

 Aphis), in U.S.A., 238, 335. 



Aphis niaidis [adusta) (Corn Leaf 

 Aphis, Corn Aphis), on Sorghum 

 in East Africa, 432 ; in Dutch 

 East Indies, 535 ; bionomics of, 

 in Kansas, 248 ; in West Indies. 

 100 ; controlled by natural ene- 

 mies in Virgin Islands. 430 ; 

 relation of, to mosaic disease of 

 sugar-cane, 100, 382, 535. 



Aphis mali (see A. ponii). 



Aphis malifoliae, 5 ; a synonym of 

 A. crataegifoliae, 409. 



Aphis napelli, on Aconitiiin in 



I Germany, 277. 



Aphis nerii (Oleander Aphis). Hip- 

 podamia convergens predacious on, 

 in California. 101. 



Aphis papaveris (see A. rumicis). 



Aphis persicae, on peach in Italy, 

 223, 344. 



Aphis per sicae-niger (see Anuraphis). 



Aphis pomi (Green Apple Aphis), 

 in British Columbia, 13, 582 ; 

 in Denmark, 194 ; in Russia, 

 348, 551 ; in U.S.A., 180, 206, 

 223, 353, 521, 524, 526, 571 ; 

 measures against, 13, 180, 353, 

 521, 524, 526, 551 ; effect of 

 meteorological conditions on, 206. 



Aphis pruni, on plum in Britain, 

 •431. 



Aphis primifoliae (Apple Grain 

 Aphis), measures against, in 

 U.S.A., 521, 571. 



Aphis rosarum (see Myzns). 



Aphis rumicis (fabae) (Black Beet 

 Aphis, Bean Aphis), in North 

 Africa and Spain, 209 ; bio- 

 nomics of, in Bohemia, 92 ; 

 bionomics of, in British Isles, 

 152, 394, 404. 487; Hippodamia 

 convergens predacious on, in Cali- 

 fornia, 101 ; on Crucifers in 

 Denmark, 193, 363 ; bionomics 

 and control of, in Germany, 



40, 277, 588. 590 ; measures 

 against, in Italy and Sicily. 223. 

 344. 



Aphis sacchari (Sugar-cane Aphis), 

 on Sorghum in East Africa, 432 ; 

 experiments in transmission of 

 mosaic disease by, in Dutch East 

 Indies. 535. 



Aphis sanborni, on Sambiicus cana- 

 densis in New York. 284. 



Aphis setariae (Rusty Brown Plum 

 Aphis), food-plants of. in Missouri. 

 239. 



Aphis sorbi (Rosy Apple Aphis). 

 Deraeocoris fascioliis predacious on, 

 in North America, 438 ; bio- 

 nomics and control of, in U.S.A., 

 223, 326, 353, 521, 524. 



Aphis urticae, on Urtica gracilis in 

 New York, 284. 



Aphis vibitrnicolens, sp. n., on 

 Viburnum tinus and laurel in 

 California, 101. 



Aphis, Apple Grain (see Aphis 

 primifoliae and Siphonaphis padi). 



Aphis, Bean (see Aphis rumicis). 



Aphis. Beet (see Pemphigus betae). 



Aphis, Black Beet (see Aphis 

 rumicis). 



Aphis. Black Cherry (see Myzus 

 cerasi) . 



Aphis. Black Peach (see Anuraphis 

 per sicae-niger). 



Aphis. Cabbage (see Brevicoryne 

 brassicae). 



Aphis. Clover {see Anuraphis bakeri). 



Aphis, Corn Leaf (see Aphis maidis). 



Aphis, Corn Root (see Aphis maidi- 

 radicis) . 



Aphis, Cotton (see Aphis gossypii). 



Aphis, Currant (see Alyzus ribis). 



Aphis, Douglas Fir (see Chermes 

 cooleyi). 



Aphis. Grain (see Macros iphum 

 granarium). 



Aphis, Green Apple (see Aphis 

 pomi). 



Aphis. Hop (see Phorodon humuli). 



Aphis, Melon {see Aphis gossypii). 



Aphis, Oat (see Siphonaphis padi). 



Aphis, Oleander (see Aphis nerii). 



Aphis, Pea (see Acyrthosiphon pisi). 



Aphis, Pine Bark (see Chermes pini- 

 corticis). 



Aphis, Pink and Green Potato (see 

 Macrosiphum solanifolii) . 



Aphis, Plum (see Hyalopterus arun- 

 dinis). 



Aphis, Poplar (see Eriosoma pas- 

 ser inii). 



Aphis, Poplar Gall (see Pemphigus 

 populitransversus) . 



