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 Knuelle W., 1956: Differenzialdiagnostische kennzeichnung der Oribatei (Acari). 3 pp. 

 Knülle W., 1957: Die Verteilung der Acari: Oribatei im Boden. 36 pp. 

 Knutson L. v., Berg C. O., 1967: Biology and immature stages of Malacophagous Diptera of the genus Knutsonia Vebeke (Sciomyzidae). 60 pp. 

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 Kobelinova M., Vercammen-Grandjean P. H., 1978: Five new larval Trombiculidae (Acarina) from Liberia and one from Zaire. 31 pp. 

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 Koch L. E., 1980: The primary types of Arachnida, Chilopoda, Diplopoda, Insecta, Onychophora and Pycnogonida in the Western Australian Museum. 32 pp. 

 Kojima J. I., Hosoda H., 1995: Arthropod faunas on the campus of Itako Hydrobiological Station, Ikabari University (II) Isopoda and Amphipoda (Crustacea). 5 pp. 

 Kolasa J., 1983: Formation of the turbellarian fauna in a submontane stream in Italy. 58 pp. [80430] [M57] Acta zoologica cracoviensia 26/10: 297-354.

 Kolodochka L. A., 1989: A revision of the phytoseiid mites of the genus Pamiroseius Wein. (Parasitiformes, Phytoseiidae). 9 pp. (in Russian). Entomologitsheskoe obozrenie 68(1): 221-229.

 Kolodotshka L. A., 1988: Novyj vid roda Euseius (Parasitiformes, Phytoseiidae). 3 pp. 

 Kolodotshka L. A., 1991: Novye vidy kleshtshej-fitosejid roda Amblyseius (Parasitiformes, Phytoseiidae). 10 pp. Vestnik Zool. 1991(3): 17-26.

 Kolodotshka L. A., Pogrebnyak S. G., 1991: Vliyanie temperatury i vlazhnosti na otrozhdenie litshinok trekh pastenieobitayushtshikh kleshtshej. 5 pp. Vestnik Zool. 1991(2): 34-38.

 Kolonin G. V., 1987: Novye materialy po iksodovym kleščam (Acarina, Ixodidae) Vietnama. 7 pp. [M25] 

 Koltun V. M., 1955: Novye rody i vidy gubok (Spongia, Cornacuspongida) iz Ochotskogo i Beringova morej. 6 pp. 

 Kolubajiv S., 1934: Zkušenosti s pěstováním parasitických druhů hmyzu z jejich hostitelů, získané ve Státním výzkumném ústavě pro ochranu lesů v Praze v roce 1929-1933. 27 pp. 

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 Komposch C., 2000: Trogulus falcipenis, spec. nov., ein neuer Brettkanker aus den Alpen und dem Dinarischen Gebirge (Arachnida, Opiliones, Trogulidae). 14 pp. [ARA2035] Spixiana 23(1): 1-14.

 Kontschán J., 2009: Rotundabaloghia browni spec. nov., a new uropodine mite from Ivory Coast (Acari, Mesostigmata, Uropodina, Uropodidae). 4 pp. Spixiana 32(1): 35-38.

 Kontschán J., 2012: Three new Uropodina mites from New Zealand (Acari, Mesostigmata). 9 pp. Spixiana 35(1): 9-17.

 Kopecký J., Koudelková B., 1997: Seasonal succession of plankton of two pools in the Morava river floodplain. 25 pp. [95100] [M30] Acta Musei Moraviae, Sci. biol.

 Kopelke J.-P., 1982: Die gallenbildenden Pontania-Arten – ihre Sonderstellung unter den Blattwespen. Teil I: Gallenbildung, Entwickulng und Phänologie. 11 pp. 

 Korcz A., 1969: Mites (Tetranychidae) observed on apple trees in the sprayed and unsprayed orchards. 8 pp. (in Polish). [ARA 404] Polskie Pismo Entomologiczne 39(2): 447-454.

 Korniychuk J. M., Gaevskaya A. V., 2000: Cainocreadium flesi sp. n. (Trematoda, Opecoelidae) – a new termatode from the black sea fishes. 3 pp. Vestnik zoologii 34(6): 89-91.

 Kornyushin V. V., Greben O. B., 2000: Records of Hemenolepididae (Cestoda, Cyclophylidea) from charadriform birds in the fauna of Ukraine. 7 pp. Vestnik zoologii 34(6): 3-9.

 Korol E. N., 2000: Brachylecithum sp. a new Cercaria (Trematoda, Dicrocoeliidae) from terrestrial snails of the Crimea. 5 pp. Vestnik zoologii 34(6): 93-97.

 Koroleva E. V., 1976: Novye vidy kleščej roda Olopachys Berlese, 1910 (Parasitiformes, Pachylaelaptidae). 17 pp. 

 Korsós Z., 1983: Diplopod types in the Hungarian Natural History Museum, I. 4 pp. 

 Korsós Z., 1991: Abundance and seasonal activity of millipedes in a dolomitic grassland community (Diplopoda). 6 pp. 

 Korth U., 1960: Die Domatienmilben der Gattung Typhlodromus und ihr Verhältnis zur Linde. 30 pp. 

 Korzhuev P. A., Khudajberdiev S. R., 1937: Ob osobennostjach perevarivanija belkov u krovososushtshich i chishtshnych pijavok (Hirudo medicinalis i Haemopis sanguisuga). 6 pp. 

 Koslinska M., 1967: Badania nad fauna zimujaca pod kora i w korze jabloni. Czesc II. Badania nad pajeczakami (Arachnida). 16 pp. [ARA 130] Polskie Pismo Entomologiczne 37(3): 587-602.

 Koste W., 1973: Zur Kenntnis der Rotatorienfauna der „schwimmenden Wiese“ einer Uferlagune in der Várzea Amazoniens, Brasilien. 35 pp. Amazoniana 5(1): 25-59.

 Koste W., 1987: Über die Rotatorien einiger Stillgewässer in der Umgebung der Biologischen Station Panguana im tropischen Regenwald in Peru. 23 pp. Amazoniana 10(3): 303-325.

 Koste W., Böttger K., 1989: Rotatorien aus Gewässern Ecuadors. 32 pp. Amazoniana 10(4): 407-438.

 Koste W., Hardy E. R., 1984: Taxonomic studies and new distribution records of Rotifera (Phylum Aschelminthes) from Rio Jarapú and Uatuma, Amazonas, Brazil. 13 pp. Amazoniana 9(1): 17-29.

 Koste W., Robertson B., 1983: Taxonomic studies of the Rotifera (Phylum Aschelminthes) from a Central Amazonian Varzea lake, Lago Camaleao. [Ilha de Marchantaria, Rio Solimoes, Amazonas, Brazil).] 30 pp. Amazoniana 8(2): 225-254.

 Koste W., Robertson B., 1990: Taxonomic Studies of the Rotifera from Shallow Waters on the Island of Maracá, Roraima, Brazil. 16 pp. Amazoniana 11(2): 185-200.

 Koste W., Robertson B., Hardy E., 1984: Further taxonomical studies of the Rotifera from Lago Camaleao, a Central Amazonian varzea lake (Ilha de Marchantaria, Rio Solimoes, Amazonas Brazil). 22 pp. Amazoniana 8(4): 555-576.

 Kostecka J., Skoczen S., 1993: Earthworm (Oligochaeta: Lumbricidae) populations in four types of beech wood Fagetum carpaticum in the Bieszczady National Park (south-eastern Poland). Part I. Species composition, diversity, dominance, frequency and associations. 13 pp. 

 Kostecka J., Skoczen S., 1993: Earthworm (Oligochaeta: Lumbricidae) populations in four types of beech wood Fagetum carpaticum in the Bieszczady National Park (south-eastern Poland). Part I. Species composition, diversity, dominance, frequency and associations. 13 pp. [EVE 395] Acta zoologica cracoviensia 36(1): 1-13.

 Kováčik, 1983: Trombikuly (Acarina, Trombiculidae) Záhorskej nížiny so zreteĺom na prírodné ohniská tularémie. 3 pp. 

 Kovaltshuk A. A., Kovaltshuk N. E., 1991: Novij vid rakoobraznykh (Copepoda, Harpacticoida) iz Ukrainskikh Karpat. 2 pp. Vestnik Zool. 1991(2): 69-70.

 Kovařík F., 1993: The fauna of Afghanistan IV: Scorpionida I. 4 pp. 

 Kovařík F., 1995: First report of Orthochirus innesi (Scorpionida: Buthidae) from Morocco. 3 pp. [M50] Klapalekiana 31: 19-21.

 Kovařík F., 1995: Review of Scorpionida from Thailand with descriptions of Thaicharmus mahunkai gen. et sp. n. and Lychas krali sp. n. (Buthidae). 21 pp. [ASZ 59187] [M39] 

 Kovařík F., 1996: First report of Compsobuthus matthiesseni (Scorpiones: Buthidae) from Turkey. 3 pp. [M10] [M54] Klapalekiana 32(1-2): 53-55.

 Kovařík F., 1998: Three new genera and species of Scorpiones (Buthidae) from Somalia. 10 pp. 

 Kovařík F., Vlasta D., 1996: First report of Amblypygi (Charinidae: Charinus ioanniticus) from Turkey. 2 pp. [M10]