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Order Hemiptera - True Bugs, Cicadas, Hoppers, Aphids and Allies

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Two new species of Calophya and notes on others (Psyllidae: Homoptera)
By Tuthill, L.D.
Entomological News 53: 215-218., 1942

Notes on North American Psyllidae.
By Schwarz, E. A.
Proceedings of the Entomological Society of Washington 6: 234-245, 1904

Psyllidae of Maine
By Patch E. M.
Bulletin of the Maine Agricultural Experimental Station 187, 1911

American Psyllidae IV (A Partial Revision of Subfamilies).
By Crawford, D. L.
Pomona College Journal of Entomology 3: 480-503. , 1911

The psyllids of America North of Mexico: (Psyllidae: Homoptera) (Subfamilies Psyllinae and Triozinae)
By Tuthill, L.D.
Iowa State College Journal of Science 17: 443-660, 1943
Full text

[cite:1074286]

An annotated checklist of the psyllids of California (Hemiptera: Psylloidea)
By Percy, D.M., A. Rung and M.S. Hoddle
Zootaxa 3193: 1-27, 2012

An annotated key to the families of scale insects (Homoptera: Coccoidea) of America, North of Mexico...
By Howell J.O., Williams M.L.
Ann. Ent. Soc. Am. 69: 181‒189, 1976
Full title: An annotated key to the families of scale insects (Homoptera: Coccoidea) of America, North of Mexico, based on characteristics of the adult female
Full text

Morphology and taxonomy of the adult males of Pseudococcidae and Eriococcidae (Homoptera : Coccoidea)
By S.A. Afifi
Bulletin of the British Museum (Natural History) Entomology, Supplement, 13, 1–210 , 1968

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