Omelko M. M., 1986: A review of gelechiid moths of the genus Parachronistis Meyr. (Lepidoptera, Gelechiidae) with descriptions of new species from the south of Primorye territory. 16 pp. (in Russian). Entomologitsheskoe obozrenie 65(4): 753-768.

 Omelko M. M., 1986: Obzor vyemčatokrylych molej roda Parachronistis Meyr. (Lepidoptera, Gelechiidae) s opisaniem novych vidov iz južnogo Primorja. 16 pp. 

 Omelko M. M., 1991: On the system and morphology of the gelechiid moths of the subfamily Gelechiinae (Lepidoptera, Gelechiidae) with special reference to the fauna of southern Primorye territory. 17 pp. (in Russian). Entomologitsheskoe obozrenie 70(1): 140-156.

 Omelková M., Ježek J., 2012: A new species of the genus Trichomyia (Diptera: Psychodidae) and new faunistic data on non-phlebotomine moth flies from the Podyjí NP and its surroundings (Czech Republic). 29 pp. Acta Entomologica Musei Nationalis Pragae 52(2): 505-533.

 Omer-Cooper J., 1955: Canthyporus lateralis (Boheman) and further new Dytiscidae (Coleoptera) from the cape province of South Africa. 8 pp. 

 Omer-Cooper J., Tottenham C. E., 1934: Coleoptera taken in the air at Wicken Fen. 4 pp. 

 Omoloye A. A., 2010: Effects of genotype variation in the cultivated rice species on the biology and galling characteristics of the African rice gall midge, Orseolia oryzivora (Diptera: Cecidomyiidae). 8 pp. Entomological Science 13(3): 320-327.

 Omoloye A. A., Vidal S., 2007: Abundance of 24-methylenecholesterol in traditional African rice as an indicator of resistance to the African rice gall midge, Orseolia oryzivora Harris & Gagné. 9 pp. Entomological Science 10(3): 249-257.

 Omori M., Vervoort W., 1986: Observations on a living specimen of the giant hydroid branchiocerianthus imperator. 5 pp. Zoologische Mededelingen 60(16): 257-261.

 Omorov E. O., 1975: K ekologii ručeinikov (Trichoptera) gornych potokov Juzhnogo Tjan-Šanja (Na primere fauny r. Ak-Bury). 7 pp. 

 Omorov E. O., Khaitov Kh. Kh., 1992: Vertical distribution of mayflies (Ephemetoptera) in Ak-Bura river and its tributary Kichik-Alai (Alai Range). 5 pp. (in Russian). Entomologitsheskoe obozrenie 71(1): 17-21.

 Omura H., Itoh T., Wright D. M., Pavulaan H., Schröder S., 2015: Morphological study of alar androconia in Celastrina butterflies. 7 pp. Entomological Science 18(3): 353-359.

 Omwega C. O., Overholt W. A., 1996: Genetic changes occurring during laboratory rearing of Cotesia flavipes Cameron (Hymenoptera: Braconidae), an imported parasitoid for the control of gramineous stern borers in Africa. 7 pp. African Entomology 4(2): 231-237.

 Omwega C. O., Overholt W. A., Mbapila J. C., Kimani-Niogu S. W:, 1997: Establishment and dispersal of Cotesia flavipes (Cameron) (Hymenoptera: Braconidae), an exotic endoparasitoid of Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) in northern Tanzania. 5 pp. African Entomology 5(1): 71-75.

 Ondráček J., 1992: Chovy hmyzu – zdroj živočišných krmiv. 111 pp. 

 Ondráček J., Matolín S., 1971: Sterilizing effect of tepa on the bean beetle Acanthoscelides obtectus Say (Coleoptera). 7 pp. Acta Entomologica Bohemoslovaca 68: 209-215.

 Ondráček J., Rupeš V., Žďárek J., Lineva V. A., 1976: Lethal effects of microwaves on strains of Musca domestica, having different resistance to insecticides. 3 pp. Acta entomologica Bohemoslovaca 73: 283-285.

 Ondřej A., 1917: Beitrag zur Kenntnis der Cetoniden. 8 pp. 

 Ondřej M., 1972: Parazitistické imperfektní houby řádu Melanconiales z území Hrubého Jeseníku, Šumperská a Rýmařovska. 10 pp. [BOT 96] Acta Musei Silesiae 21A: 97-105.

 Ondřej M., Zavřel H., 1972: Sběry parazitických imperfektních hub rodu Ovularia Sacc. z území Moravy a Slezska. 10 pp. [BOT 97] Acta Musei Silesiae 21A: 141-150.

 Onillon J. C., 2015: Dynamique des populations de Siphoninus phillyreae (Haliday, 1835) (Hom., Aleyrodidae) sur frene dans le Sud-Est de la France Importance des facteurs naturels de régulation. I. Action du parasitoide Encarsia gautieri (Mercet, 1928) (Hym., Aphelinidae). 14 pp. Bulletin de la Société entomologique de Mulhouse 71(3): 37-50.

 Ono H., 1978: Description of a new Odagmia-species, O. nishijimai n. sp. (Diptera, Simuliidae) from Japan. 9 pp. Kontyu, Tokyo 46(1): 43-51.

 Ono H., 1980: Some new species of black flies (Diptera, Simullidae) from Hokkaido, Japan. 29 pp. Kontyu, Tokyo 48(3): 333-361.

 Ono H., 1986: Spiders of the families Clubionidae, Gnaphosidae and Thomisidae from the Noto Peninsula and the southern part of Ishikawa Prefecture, Japan. 8 pp. Memoirs of the National Science Museum 19: 167-174.

 Ono H., 1993: Spiders of the genus Clubiona (Araneae, Clubionidae) from Eastern Hokkaido, Japan. 6 pp. Memoirs of the National Science Museum 26: 89-94.

 Ono H., 2001: Crab spiders of the family Thomisidae from the Kingdom of Bhutan (Arachnida, Araneae). 34 pp. Entomologica Basiliensia 23: 203-236.

 Ono H., Hishikawa Y., 1989: Taxonomic revision of the Heptathelid spiders (Araneae, Mesothelae) from Amami-Ôshima Island, the Ryukyus. 7 pp. (in Japanese). Memoirs of the National Science Museum 22: 119-125.

 Ono H., Jocqué R., 1986: Two new species of the family Zodariidae from Saudi Arabia (Arachnida: Araneae). 6 pp. [ARA1700] Fauna of Saudi Arabia 8: 6-11.

 Ono H., Maruyama M., 2015: Giulianium tomokoae, a new species of intertidal rove beetle (Coleoptera: Staphylinidae: Omaliinae) from Japan. 2 pp. Japanese Journal of Systematic Entomology 21(2): 297-298.

 Ono H., Shinkai E., 1988: Notes on the Japanese sandy-beach spider, Lycosa ishikariana (Araneae, Lycosidae), based upon fresh topotypical speciemens. 5 pp. Memoirs of the National Science Museum 21: 131-135.

 Ono H., Tanikawa A., 1990: A revision of the Japanese spiders of the genus Langbiana (Araneae, Zodariidae). 12 pp. Memoirs of the National Science Museum 23: 101-112.

 Ono T., 1976: A white mutant in potato tuber moth, Phthorimaea operculella Zeller (Lepidoptera, Gelechiidae). 3 pp. Kontyu, Tokyo 44(1): 108-110.

 Ono T., 1980: Role of the scales as a releaser of the copulation attempt in the silkworm moth, Bombyx mari (Lepidoptera, Bombycidae). 5 pp. Kontyu, Tokyo 48(4): 540-544.

 Ono T., Ando C., Kondo Y., 2004: Effect of metanotal secretion ingestion on oviposition in a tree cricket, Truljalia hibinonis (Orhoptera: Gryllidae). 5 pp. (in English). Entomological Science 7: 9-13.

 Ono T., Nakasuji F., 1980: Comparison of flight activity and oviposition characteristics of the seasonal forms of a migaratory skipper butterfly, Parnara guttata guttata. 8 pp. 

 Onore G., 1994: Description of the immature stages of six species of Sphaenoghathus, with comparative notes on phylogeny and natural history (Insecta: Coleoptera: Lucanidae). 23 pp. (in English). Annals of Carnegie Museum 63(1): 77-99.

 Onore G., Morón M. A., 2004: Dynastes neptunus Quenzel (Coleoptera: Scarabaeidae: Dynastinae), descriptions of the third instar larva and pupa, with notes on biology. 8 pp. 

 Onore G., Morón M.– A., 2004: Dynastes neptunus Quenzel (Coleoptera: Scarabaeidae: Dynastinae), description of the third instar larva and pupa, with notes on biology. 8 pp. The Coleopterists Bulletin 58(1): 103-110.

 Onoyama K., 1980: An introduction to the ant fauna of Japan, with a check list (Hymenoptera, Formicidae). 10 pp. Kontyu, Tokyo 48(2): 193-212.

 Onoyama K., 1981: Brood rearing by colony founding queens of the harvester ant Messor aciculatus. 17 pp. Kontyu, Tokyo 49(4): 624-640.

 Onoyama K., 1981: Spring aboveground activities of the harvester ant Messor aciculatus, with special reference to the flight activity. 16 pp. Kontyu, Tokyo 49(3): 445-460.

 Onoyama K., 1998: Taxonomic notes on the ant genus Crematogaster in Japan (Hymenoptera: Formicidae). 6 pp. [HYM 2873] Entomological Science 1(2): 227-232.

 Onsoy C., Altunsoy F. A., Akay F. H., 2014: A new record for the Turkish house fly fauna: Mesembrina meridiana (L. 1758) (Diptera: Muscidae). 5 pp. Journal of the Entomological Research Society 16(2): 23-27.

 Onsoy C., Altunsoy F. A., Akay F. H., 2014: A new record for the Turkish house fly fauna: Mesembrina meridiana (L. 1758) (Diptera: Muscidae). 5 pp. Journal of the Entomological Research Society 16(2): 23-27.

 Oordt G. J. van, 1935: De staatsnatuurreservaten. 8 pp. (in Dutch). 

 Oorschot R. A. H., Cooper D. W., Moore D. S., 1989: The origin of the feral dama (tammar) wallabies Macropus eugenii, in the Rotorua area of New Zealand. 4 pp. 

 Oosterbroek P., 1994: Notes on western Palaearctic species of the Tipula (Yamatotipula) lateralis group, with the description of a new species from Turkey (Diptera: Tipulidae). 7 pp. [DIP 6559] European Journal of Entomology 91(4): 429-435.

 Ooststroom S. J. van, 1967: Siobla sturmii ((Klug), een nieuwe bladwesp voor de Nederlandse fauna (Hym., Tenthr.). 3 pp. 

 Ooststroom S. J. van, 1968: Drie voor Nederland nieuwe Cephus-soorten (Hym. Cephid.). 2 pp. 

 Ooststroom S. J. van, 1969: Over het voorkomen ven Pseudogonalos hahni (Spin.) in Nederland (Hym., Trigonal.). 4 pp.