INDEX. 



641 



Aphelenchus ormerodis, on straw- 

 berry, 470 ; on violet, 543. 



Aphelenchus phvllophagus, sp. n., 

 bionomics of, in Britain, 426. 



Aphelenchus pvri, on pears, 543. 



Aphelininae, list of Japanese species 

 of, 452 ; and their hosts, list of, 

 368. 



Aphelinus, parasite of Chrysoni- 

 phalus dictyospermi in Italy, 343. 



Aphelinus chilensis, parasite of 

 Aspidiotus hederae, 368. 



Aphelinus chrvsomphali, introduced 

 into Fiji against Aspidiotus des- 

 tructor, 501, 502, 595. 



Aphelinus diaspidis, parasite of 

 Coccids in Michigan, 375. 



Aphelinus fuscipennis, parasite of 

 Coccids in Japan, 452 ; parasite 

 of Aspidiotus perniciosus in ]\lichi- 

 gan, 375. 



Aphelinus japonicus, in Japan, 452. 



Aphelinus mali, introduction of, 

 into South Africa against Erio- 

 soma lanigerum, 185, 229, 282, 331; 

 introduction of, into France, 476, 

 593 ; establishment of, in New Zea- 

 land, 534 ; proposed introduction 

 of, into Uruguay, 518. 



Aphelinus mytilaspidis, parasite of 

 Hemichionaspis aspidistrae in 

 Japan, 452. 



Aphidencyrtus aspidioti, parasite of 

 Coccids in Michigan, 375. 



Aphidina, notice of key to subtribes 

 of, 438. 



aphidiphagus, Dcraeocoris. 



Aphidius, parasites of, in Britain, 

 178 ; parasite of Macrosiphum 

 pisi in Hungary, 448. 



Aphidius ervi, bionomics of, in 

 Britain, 178. 



Aphidius granarius, parasite of 

 Oscinella frit in Britain, 534. 



Aphidius phorodontis, parasite of 

 Aphis malifoliae in Virginia, 571. 



Aphidoletes fulva, natural enemy of 

 Aphis brassicae in Ontario, 132. 



Aphiochaeta scalaris, parasite of 

 Schistocerca peregrina in Guate- 

 mala, 587. 



aphionewn, Xanthiosternum . 



Aphids, 205, 234, 513, 560 ; in 

 Canada, 83 ; intercepted in 

 Canada, 160 ; in Canary Islands, 

 209 ; on tea in Ceylon, 123 ; 

 food-plants of, in Denmark, 193, 

 194, 363 ; European gall-making 

 species of, 174 ; on nettles in 

 Germany, 591 ; introduction of 

 natural enemies of, into Hawaii, 

 150. 439, 468 ; in Mexico, 366 ; 



on banana in Porto Rico, 574 ; 

 on tomatos, etc., in Sicily, 439 ; 

 apparently not present on sugar- 

 cane in Trinidad, 615 ; on fruit 

 crops in U.S.A., 5, 111 ; inter- 

 cepted in U.S.A., 44, 265, 266. 



407, 514 ; on coffee, 315, 319, 

 532 ; tea little damaged by, 269, 

 446 ; plant diseases disseminated 

 by, 266, 287, 306, 359, 382 ; 

 relation of haemolytic fluids in, 

 to plant juices, 137 ; measures 

 against, 60, 65, 173, 228, 295, 332, 

 343, 352, 353, 381, 383, 393, 407, 

 475, 512, 523, 524, 526 ; natural 

 enemies of, 39, 101, 132, 148, 

 150, 174, 178, 189, 203, 250, 288, 

 297, 322, 334, 343, 380, 406, 407, 



408, 429, 430, 438, 439, 448, 468, 

 482, 540, 571, 599 ; ants associa- 

 ted with, 20. 108, 195, 335 ; 

 classification and new species of, 

 17, 41, 101, 102, 138, 227. 438, 

 597, 598; anatomy of, 41, 468; 

 reproduction in, 521, 523, 578 ; 

 production of winged forms of, 

 137, 532 ; diagrams showing 

 development of, 547. 



Aphis, intercepted in California, 



266, 295 ; natural enemies of, 



in Cook Islands, 264. 

 Aphis abietina (see Mvzaphis). 

 Aphis adusta (see A. maidis). 

 Aphis aurantii (see Toxoptera) . 

 Aphis avenae (see Siphonaphis padi) . 

 Aphis brassicae (see Brevicorvne). 

 Aphis bufo (see Lachnus). 

 Aphis cari, sp. n., food-plants of, in 



California, 102. 

 Aphis cephalanthi, parasitised by 



Leucopis nigricornis, 39. 

 Aphis cerasi, spray for, in Denmark, 



194. 

 Aphis cornifoliae (Sunflower Aphis), 



a minor pest in Montana in 1920. 



585. 

 Aphis crataegi, on fruit-trees in 



Denmark, 194. 

 Aphis crataegi foliae, A. malifoliae a 



synonym of, 409 ; bionomics of, 



in U.S.A., 521, 571. 

 Aphis euonymi (see A . rumicis). 

 Aphis fabae (see^-i. rumicis). 

 Aphis forbesi (Strawberry Root 



Aphis), in Ontario, 132 ; in 



:Missouri, 240, 283. 

 Aphis gossypii (Cotton Aphis, ]\Ielon 



Aphis), in India, 599 ; on cotton 



and water melon in Mexico, 269, 



367 ; in Russia, 329 ; in U.S.A.. 



101, 155, 239, 283, 306, 389, 406. 



407. 408; in West Indies, 413, 



