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 Cooper M., 2000: Five new species of Agelaia Lepeletier (Hym., Vespidae, Polistinae) with a key to members of the genus, new synonymy and notes. 22 pp. 

 Cooper M., 2001: A new species of Cuyodynerus Willink (Hym., Vespidae, Eumeninae) from Bolivia. 2 pp. 

 Cooper M., 2001: Two new species of Agelaia Lepeletier (Hym., Vespidae, Polistinae). 4 pp. 

 Cooper M., 2002: A new species of Epipona (Hym., Vespidae, Polistinae) with a key to the members of the genus. 6 pp. 

 Copland M. J. W., King P. E., 1972: The structure of the female reproductive system in the Torymidae (Hymenoptera: Chalcidoidea). 22 pp. 

 Corbet S. A., Rotheram S., 1965: The life history of the ichneumonid Nemeritis (Devorgilla) canescens (Gravenhorst) as a parasite of the mediterranean flour moth, Ephestia (Anagasta) kuehniella Zeller, under laboratory conditions. 6 pp. 

 Cortopassi-Laurino M., Nogueira-Neto P., 2003: Notes on the bionomy of the stingless bee Tetragonisca weyrauchi Schwarz, 1943 (Apidae, Meliponini). 8 pp. Acta Amazonica 33(4): 643-650.

 Coruh S., 2016: Biogeography and host evaluation of the subfamily Pimplinae (Hymenoptera: Ichneumonidae) in Turkey. 28 pp. Journal of the Entomological Research Society 18(2): 33-60.

 Coruh S., Kolarov, J., 2012: Description of the male of Ophion internigrans Kokujev, 1906 (Hymenoptera: Ichneumonidae: Ophioninae) with a key to the Turkish Ophion Fabricius, 1798, Species. 6 pp. (in English). Journal of the Entomological Research Society 14(2): 55-60.

 Coruh S., Özbek H., Kolarov J., 2002: New and rare taxa of Ichneumonidae (Hymenoptera) from Turkey. 4 pp. 

 Coruh S., Özbek H., Kolarov J., 2005: A Contribution to the knowledge of Ichneumonidae (Hymenoptera) from Turkey. 5 pp. [HYM 7298] (in English). Journal of the Entomological Research Society 7(3): 53-57.

 Coruh S., Özbek H., Kolarov J., 2005: A Contribution to the knowledge of Ichneumonidae (Hymenoptera) from Turkey. 5 pp. [HYM 7298] (in English). Journal of the Entomological Research Society 7(3): 53-57.

 Costa A., 1866: Sulle specie d’Imenotteri del genere Megischus. 2 pp. 

 Couchman J. R., 1977: A collection of aphid parasites and hyperparasites (Hym.) from Iceland. 4 pp. 

 Court H. K., Bohart R. M., 1958: New species of Lindenius from western North America (Hymenoptera: Sphecidae). 8 pp. 

 Cousin G., 1933: Etude biologique d’un Chalcidien: Mormoniella vitripennis Walk. 30 pp. 

 Cowan D. P., Waldbauer G. P., 1984: Seasonal occurrence and mating at flowers by Ancistrocerus antilope (Hymenoptera: Eumenidae). 5 pp. Proc. Entomol. Soc. Wash. 86(4): 930-934.

 Cowley D. R., 1962: Aspects of the biology of the immature stages of Pison spinolae Shuckard (Hymenoptera: Sphecidae). 10 pp. 

 Crawford J. C., 1910: New South American parasitic Hymenoptera. 5 pp. 

 Crawford J. C., 1910: Three new genera and species of parasitic Hymenoptera. 4 pp. 

 Crawford J. C., 1911: Descriptions of new Hymenoptera. 1. 7 pp. 

 Crawford J. C., 1911: Descriptions of new Hymenoptera. 2. 11 pp. 

 Crawford J. C., 1911: New Hymenoptera from the Philippine islands. 15 pp. 

 Crawford J. C., 1911: Two new Hymenoptera. 2 pp. 

 Crawford J. C., 1913: Descriptions of new Hymenoptera, No. 5. 26 pp. 

 Crawford J. C., 1913: Descriptions of new Hymenoptera, No. 6. 20 pp. 

 Crawford J. C., 1913: Descriptions of new Hymenoptera, No. 7. 9 pp. 

 Crawford J. C., 1914: Descriptions of new Hymenoptera, No. 8. 10 pp. 

 Crawford J. C., 1914: Hymenoptera, superfamilies Apoidea and Chalcidoidea, of the Yale-Dominican Expedition of 1913. 4 pp. 

 Crawford J. C., 1915: Description of new Hymenoptera, No. 9. 10 pp. 

 Crawley W. C., 1914: A revision of the genus Leptothorax, Mayr, in the British Isles. 21 pp. 

 Crawley W. C., 1925: A revision of some old types of Formicidae. 19 pp. 

 Crawley W. C., : Myrmecological Notes. 4 pp. 

 Creighton W. S., 1953: A new subspecies of Xenomyrmex stolli from Northeastern Mexico (Hymenoptera, Formicidae). 5 pp. 

 Creighton W. S., 1953: New data on the habits of the Ants of the genus Veromessoor 18 pp. 

 Creighton W. S., 1957: A Study ot the Genus Xenomyrmex (Hymenoptera, Formicidae). 14 pp. 

 Creighton W. S., 1963: Further Observations on Pseudomyrmex apache (Hymenoptera, Formicidae). 4 pp. 

 Creighton W. S., 1965: Studies od southwestern ants belonging to Camponotus, subgenus Myrmobrachys (Hymenoptera, Formicidae). 8 pp. 

 Creighton W. S., 1969: Studies on Camponotus (Myrmaphaenus) andrei Forel (Hymenoptera, Formicidae). 6 pp. 

 Creutzburg F., 1996: Checklist der Faltenwespen (Vespidae) Thüringens (Insecta: Hymenoptera). 4 pp. Check-Listen Thüringer Insekten 4: 57-60.

 Crevecceur A., Maréchal P., 1937: Catalogue des Hyménopteres de Belgique VII. 12 pp. 

 Crevecceur A., Maréchal P., 1938: Catalogue des Hyménopteres de Belgique VIII. 34 pp. 

 Criddle N., 1917: Further observations upon the habits of the western Wheat Stem Sawfly in Manitoba and Saskatchewan. 2 pp. 

 Criddle N., 1924: The western Wheat-Stem Sawfly and its control. 6 pp. 

 Crome W., 1959: Beobachtungen an dem Kreuzspinnen-Kokon-Parasiten Tromatobia ovivora (Boheman) (Hymenoptera, Pimplinae). 31 pp. 

 Crooke M., 1953: Some notes on Anoplonyx destructor Benson. 6 pp. 

 Cros A., 1922: Bembex handlirschella Ferton. 8 pp. 

 Cros A., 1927: Osmia Saundersi Vachal. 7 pp. 

 Crosby C. R., 1909: On certain seed-infesting chalcis-flies. Order Hymenoptera. Supefamily Chalcidoidea. 22 pp.