810 Van Duzee: Catalogue of Hemiptera [2936- 



b. var. acuta (Crawf.) 



Crawford, U. S. Natl. Mus., Bui. 85, pi. 154, 1914, Psylla. 

 Host: Pinus, Cercocarpus. 

 Localities: Colo., Utah, Nev., Calif. 



2936. Psyllia floccosa (Patch) 

 Patch, Can. Ent., xli, p. 301, 1909, PsyUa. 



Patch, Ann. Ent. Soc. Am., ii, p. 117, 1909, Psylla (venation). 

 Patch, Me. Agr. Exp. Sta., Bui. 187, p. 11, 1911, Psylla (figures). 

 Crawford, U. S. Natl. Mus., Bui. 85, p. 154, 1914, Psylla (figures). 



Host : Alnus. 



Localities: Out., Me., N. H., Md., Colo., Calif. 



2937. Psyllia astigmata Crawf. 

 Crawford, N. S. Natl. Mus., Bui. 85, p. 155, 1914, Psylla (figures). 

 Host: Prunus. 

 Localities: Wis., Colo., Calif., Wash. 



2938. PsyUia trimaculata (Crawf.) 

 Crawford, Pomona Jl. Ent., iii, p. 631, 1911, Psylla (as var. of alni). 

 Crawford, U. S. Natl. Mus., Bui. 85, p. 155, 1914, Psylla. 



Host: (f) 



Locality: N. Y. 



2939. Psyllia cerasi (Patch) 

 Patch, Me. Agr. Exp. Sta., Bui. 202, p. 223, 1912, Psylla (figures). 

 Crawford, U. S. Natl. Mus., Bui. 85, p. 156, 1914, PsyUa. 



Host : Cerasus. 



Locality : Me. 



2940. PsyUia alni (Linn.) 

 Linnaeus, Syst. Nat., edn. 10, i, p. 454, 1758, Cliermes. 

 Linnaeus, Fauna Suec, edn. 2, p. , No. 1008, 1761, Cliermes. 

 Geoffroy, Hist. Abreg. des Lis., i, p. 486, No. 3, 1762, PsyUa. 

 Scopoli, Ent. Cam., p. 140, 1763, Chermes. 

 Linnaeus, Syst. Nat., edn. 12, ii, p. 738, 1767, Cliermes. 

 DeGeer, Memoires, iii, p. 148, pi. 10, fig. 8, 1773, Chermes. 

 Fabricius, Syst. Ent., p. 741, 1775, Cliermes. 

 Goeze, Ent. Beytr., ii, p. 323, 1778, Cliermes. 

 Fabricius, Spec. Ins., ii, j). 391, 1781, Chermes. 

 Eetzius, Genera et Spec. Ins., p. 79, 1783, Chermes. 

 Fabricius, Mant. Ins., ii, p. 318, 1787, Cliermes. 



Gnielin in Linnaeus, Syst. Nat., edn. 13, i, pt. 4, p. 2212, 1788, Chermes. 

 Latreille, Hist. Nat. Crust. Ins., iii, p. 267, 1802, Psylla. 

 Fabricius, Ent. Syst., iv, p. 222, 1794, Chermes. 

 Fabricius, Syst. Ehyng., p. 305, 1803, Chermes. 

 Latreille, Hist. Nat. Crust. Ins., xii, p. 380, 1804, Psylla. 

 Latreille, Genera Crust. Ins., iii, p. 169, 1807, Psylla. 

 Latreille, Consid. Gen., p. 434, 1810 (as type of Psylla). 

 Leach, Brewster's Edinbg. Encyc, ix, p. 125, 1815, Psylla. 

 Zetterstedt, Fauna Lapp., p. 556, 1828, Chermes. 



