225 



Chionaspis sorbi Dougl., Ent. Mon. Mag., xxix, p. 130 (1S93). 



" salicis Lint., 9th Rep. Ins. N. Y., p. 411 (1893). 



" fraxini Sign., British Naturalist, p. 23 (1894). 



" alni Ckll., Can. Ent., xxvii, p. 33 (1895). 

 Aspidiotus fraxini Henschel, Die Schjidl. Forst. & Obst. Ins., p. 514 (1895). 



'• salicis " " " " " " p. 514(1895). 



Cliionaspis " Reuter, Meddel. Soc. Faun. Flo. Fenn., xxii, p. 21 (1896). 

 '' " Dougl., Notes on Brit. Coccidae, No. 2, p. 249 (1896). 



" vaccinii Ckll., Bull. 4, T. s., Dep. Ag., p. 54 (1896). 



Aspidiotus salicis Eckst., Forstliche Zoologie, p. 558 (1897). 

 Chionaspis " Berl. e Leon., Cherm. Ital., Fasc. iii, Nos. 55, 56,57 (1898). 



" " Newell, Contr. la. Ag. Coll., No. 3, p. 4 (1898). 



" " Cooley, Spec. Bull. Mass. Exp. Sta., p. 11 (1899). 



" " Lugger, 6th Rep. Ent. Minn. Exp. Sta., p. 237 (1900). 



" " Newst., Jn. Roy. Hor. Soc, xxiii, p. 16 (1900). 



" " " Mon. Brit. Cocc, i, p. 180 (1901). 



Habitat. — Europe. 



On Salix hermaphrodita; S.alba; S.viminalis; S. holoserica ; Populus 

 pyramidoides ; P. nigra; P. tremuloides ; Alnus communis; A. vulgare ; 

 A.glutinosa; Cornus sanguinea; Acer pseudoplatanus; Vaccinium myrtil- 

 lus; V. vitis-idasa; V. uliginosum ; Tiliaparvifolia ; Sorbus aucuparia; Frax- 

 inus excelsior; Sarcothamnus scoparius; S. vulgaris. 



1082. Chionaspis salicis=nigr£e (Walsh). 



Aspidiotus salicis-nigrag Walsh, ist Rep. Ins. 111., p. 40 (1868). 



Mytilaspis salicis LeBaron (non Linn.), Tr. 111. Hor. Soc, App., p.140 (1871). 



" " " 2nd Rep. Ins. III., p. 140 (1872). 



PDiaspis salicicorticis Bessey, la. Ag. Rep., p. 244 (1874). 

 Chionaspis salicis Comst., Rep. U. S. Dep. Ag., 1880, p. 320 (1881). 



" " Osborn, Tr. la. Hor. Soc, xvii, p. 214 (1882). 



" " Comst., 2nd Rep. Dep. Ent. Corn. Univ., p. 106 (1883). 



" " " Intr. Ent., p. 151 (1888). 



" " Pack., 5th Rep. U. S. Ent. Com., p. 593 (1890). 



Mytilaspis " Forbes, 17th Rep. Ins. III., App., p. 23 (1891). 

 Chionaspis *' Lugger, Bull. 43, Minn. Exp. Sta., p. 224 (1895). 



" " " ist Ann. Rep. Minn. Exp. Sta., p. 128 (1895). 



" " Osborn, Pr. la. Ac. Sci., v, p. 224 (1898). 



" " " Contr. la. Ag. Coll., No. 3, p. 4 (1898). 



" salicis-nigrae Cooley, Spec. Bull. Mass. Exp. Sta., p. 19 (1899). 



" " " Hunter, Kan. Univ. Quar., ix, p. loi (1900). 



" " " Quaint. & Scott,Cocc.Amtr.,Dec.iii-iv,No. 20 (1901). 



Habitat.— Can.; Me.; Mass.; N. Y.; Ohio; Ind.; 111.; Minn.; la.; Mo.; 

 Neb.; Kan.; Col.; N. Mex.; Ariz.; Wash.; Cal. 



On willow; poplar; tulip-tree; Cornus stolonifera; Amelanchier cana- 

 densis ; Ceanothus. List in Spec. Bull. Mass. Exp. Sta., p. 21 (1S99). 



15 



