At the dated check, the references listed below either did not resolve in
Crossref or DataCite, or carried a retraction notice. Each one is shown with the
registry record that put it there.
The 20 references without a DOI — listed, not checked
no DOI — not checkedArnold C. Y . The determination and significance of the base temperature in a linear heat unit system. Proc. Am. Soc. Hortic. Sci. 1959, 74:430–445.
no DOI — not checkedAskew R. R . On the biology of the inhabitants of oak galls of Cynipidae (Hymenoptera) in Britain. Trans. Soc. Br. Entomol. 1961, 14:237–268.
no DOI — not checkedAskew R. R . The biology of gall wasps. Biology of gall insects. T. N Ananthakrishnan, ed. Baltimore, MD, Edward Arnold. 1984, 223–271.
no DOI — not checkedDailey D. C Perry T Sprenger C . M. Biology of three Callirhytis gall wasps from Pacific slope Erythrobalanus oaks. Pan-Pac. Entomol. 1974, 50:60–67.
no DOI — not checkedDailey D. C Sprenger C. M . Three new gall-inducing Callirhytis Foerster from Quercus cedrosensis Muller (Hymenoptera: Cynipidae). Pan-Pac. Entomol. 1977, 53:43–46.
no DOI — not checkedEliason, E. A . 1999. Ecology, host plant relationships, and management of the horned oak gall wasp, Callirhytis cornigera (Osten Sacken). Ph.D. dissertation, University of Kentucky, Lexington, KY.
no DOI — not checkedFelt E. P . Plant galls and gall makers. Ithaca,NY, Comstock, 1940.
no DOI — not checkedGosling D. C . An annotated list of the checkered beetles (Coleoptera: Cleridae) of Michigan. Gt. Lakes Entomol. 1980, 13:65–76.
no DOI — not checkedJohnson W. T Lyon H. H . Insects that feed on trees and shrubs. Ithaca, NY, Comstock, 1988.
no DOI — not checkedLyon R. J . The alternate generation of Callirhytis agrifoliae (Ashmead) (Hymenoptera: Cynipoidea). Proc. Entomol. Soc. Wash. 1964, 66:193–196.
no DOI — not checkedLyon R. J . The alternate generation of Callirhytis quercussuttonii (Bassett) (Hymenoptera: Cynipoidea). Proc. Entomol. Soc. Wash. 1969, 71:61–65.
no DOI — not checkedMcCracken I Egbert D . California gall-making Cynipidae with descriptions of new species. Palo Alto, CA, Stanford University Press, 1922.
no DOI — not checkedMcQuilkin, R. A . 1990. Quercus palustris Muenchh., pin oak, p. 709-714. In R. M. Burns and B. H. Honkala [eds.], Silvics of North America, vol. 2, Hardwoods. USDA For. Serv. Agric. Handb. 654.
no DOI — not checkedvon Osten Sacken C. R . Contributions to the natural history of the Cynipidae of the United States and of their galls. Proc. Entomol. Soc. Phila. 1865, 4:331–380.
no DOI — not checkedSAS Institute. JMP statistics and graphics guide, version 3.1. Cary, NC, SAS Institute, 1995.
no DOI — not checkedShorthouse J. D . The insect community associated with rose galls of Diplolepis polita (Cynipidae, Hymenoptera). Quaest. Entomol. 1973, 9:55–98.
no DOI — not checkedTaft, J. B. 1982. The anatomy and development of the horned oak gall on Quercus palustris Muench. M.S. thesis, Southern Illinois University, Carbondale, IL.
no DOI — not checkedWeld, L. H. 1959. Cynipid galls of the eastern United States. Privately printed in Ann Arbor, MI.
no DOI — not checkedWhyte G. L. Ford R. P. . 1980. Damage appraisal of horned oak gall on pin oak in Oakwood Bottoms Greentree Reservoir, Shawnee National Forest, 1979. USDA For. Serv. Northeast. Area State Priv. For. NA-FB/P-9.
no DOI — not checkedWiebes-Rijks A. A Shorthouse J. D . Ecological relationships of insects inhabiting cynipid galls. Biology of insect-induced galls. J. D Shorthouse, O Rohfritsch, ed. New York, Oxford University Press, 1992, 238–257.
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