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1899. Je. 1. Country Gentleman, p. 430. 

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Garman, H. 



1882. The Phytopti and other Injurious Plant Mites, p. 128, 135, 



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Hagen, H. A. 



1885. The Collection of Phytoptocecidia, or Mite Galls, in the 

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1906. Insect Galls of Ontario, p. 59, pi. F., fig. 1, Ent. Soc. Ont., 

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Lintner, J A. 



1888. May 31, Country Gentl., Vol. 53, p. 430, col. 3-13 cm., p. 460, 

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1895. April 25, May 16. Colman Rural World, p. 131, 154. 

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1879. July No. Western Stock Journ. & Farmer, Vol. 9, pi. 142. 

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1906. Dec. The Apple and Pear Mites. No. 8, N. Y. Agr. Exp. 

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