Wilson-Vickery—^List of Aphididae. 
115 
nigra, ApMs (Myzus), Theobald, 1916. Can. Ent., XLVIII, p. 233. 
A new name for Aphis oxyacanthae Koch not Schrank. 
Pyrus malm. 
nigra, PterocMorus Del Guercio, as a var. of P. roborus Linnaeus, 
which see. 
nigrae, Chaitopliorus Oestlund, 1886. Aphididae of Minnesota, p. 
49. 
Salix JongifoUa, 8. nigra. 
tt 
nlgrlnectaria, Macrosiphum Theobald, 1915. Bui. Ent. Research 
VI, p. 107, fig. 
Pimm arvense. 
nigripes, Aphis Theobald, 1914. Bui. Ent. Research, IV, p. 327, 
fig. 
Salix sp. 
nlgrltarsis, Aphis Heyden, 1837. Ent. Beitr. Mus. Senk., II, p. 
299. 
II, p. 299. 
Betula alha, Caltha palustris. 
ni^ofasciatus, Bnlachnus Del Guercio, 1909. Redia, V, p. 324, 
fig. 
Pinus sylvestris. 
nlgronervosa, Pentalonla Coquerel, 1859. Ann. Ent. Soc. Pr. VII, 
ser. 3, p. 259. 
Musa sapientium. 
nlgro-rufa, Aphis Walker, 1848. The Zool. VI, p. 2247. 
Anagallis arvensis. 
nlgrotuhercTilata, Lachniella Del Guercio, 1909. Redia, V, p. 306, 
fig. 
Larix decidua, L, leptolassa. 
noci¥a, Aphis Walker, 1849. The Zool. VII, p. 36, app. 
Primus spinosa. 
nordmanniana©* Ohermes Eckstein, 1890. Zool. Anz., XII, p. 90. 
Tsuga canadensis. 
norvegicuin, Acyrthoslphon Mordwilko, 1914. Fauna of Russia, 
(Insecta Hemiptera), I, Petrograd., p. 143. 
Food plant? 
