Korotkevitsch V. S., 1955: Pelagičeskie nemertidy dalnevostočnych morej SSSR. [Guide to the fauna of the UdSSR]. 131 pp.  Discount 50%!

 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. 

 Korsós Z., 2001: Diplopoda from the Nepal Himalaya: Towards the clarification of the genus Anaulaciulus Pocock 1895 (Diplopoda, Julida, Julidae, Brachyiulini). 26 pp. Senckenbergiana biologica. 81(1/2): 61-86.

 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.

 Košulič O., Hula V., 2011: Arachnofauna přírodní rezervace Louky pod Kumstátem (Česká republika). (Arachnofauna of Louky pod Kumstátem Nature Reserve (Czech Republic)). 12 pp. (in Czech, in English).  Klapalekiana 47(3-4): 201-212.

 Koteja J., Poinar Jr. G. O., 2005: Scale insects (Coccinea) associated with mites (Acari) in the fossil record. 12 pp. Polskie Pismo Entomologiczne 74(2): 287-298.

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

 Kovalev O. V., 1965: Gallobrazujuščie orechotvorki (Hymenoptera, Cynipidae) juga Dalnego Vostoka SSSR. 28 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., 1992: A check list of scorpions (Arachnida: Scorpiones) in the collections of the zoological department, National museum in Prague. 6 pp. [ARA 1277] Acta Societatis Zoologicae Bohemiae 56: 181-186.

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

 Kovařík F., 1993: Two new species of the genus Scorpiops (Arachnida: Scorpiones: Vaejovidae) from sout-east Asia. 7 pp. [ARA 1279] Acta Societatis Zoologicae Bohemiae 57: 109-115.

 Kovařík F., 1994: Isometrus zideki sp. n. from Malaysia and Indonesia, and a taxonomic position of Isometrus formosus, I. thurstoni and I. sankariensis (Arachnida: Scorpionida: Buthidae). 9 pp. [ARA 307] Acta Societatis Zoologicae Bohemiae 58: 195-203.

 Kovařík F., 1994: Scorpiops irenae sp. n. from Nepal and Scorpiops hardwickei jendeki subsp. n. from Yunan, China (Arachnida: Scorpionida: Vaejovidae). 6 pp. [ARA 308] Acta Societatis Zoologicae Bohemiae 58: 61-66.

 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., 1995: Review of Scorpionida from Thailand with descriptions of Thaicharmus mahunkai gen. et sp. n. and Lychas krali sp. n. (Buthidae). 21 pp. [ASZ59187] [M39] [78339] Acta Societatis Zoologicae Bohemiae 59: 187-207.

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

 Kovařík F., 1997: Afroisometrus gen. n. from Zimbabwe (Scorpiones. Buthidae). 3 pp. [ARA 1280] Acta Societatis Zoologicae Bohemiae 61: 35-37.

 Kovařík F., 1997: Results of the Czech biological expedition to Iran. Part 2. Arachnida: Scorpiones, with descriptions of Iranobuthus krali gen. n. et sp. n. and Hottentotta zagrosensis sp. n. (Buthidae). 14 pp. [78341] Acta Societatis Zoologicae Bohemiae 61: 39-52.

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

 Kovařík F., 2000: Revision of family Scorpiopidae (Scorpiones), with descriptions of six new species. 49 pp. 

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

 Kowalczuk V. G. L., Masunari S., 2000: Crescimento relativo e determinacao da idade na fase juvenil de Armases angustipes (Dana) (Decapoda, Brachyura, Graspidae). 8 pp. Revta bras. Zool. 17(1): 17-24.

 Kowalczuk V. G. L., Masunari S., 2000: Estrutura populacional de Armases angustipes (Dana) (Decapoda, Brachyura, Graspidae) na Ilha do Farol, Matinhos, Paraná. 16 pp. Revta bras. Zool. 17(1): 1-16.

 Kozlowska J., 1962: Wolnozyjace nicienie wodne (Nematoda aquatica) Wyzyny Lódzkiej. 25 pp. Fragmenta faunistica 9/20: 283-305.

 Kožuch O., Lysý J., Nosek J., 1989: Výsledky vyšetrenia kliešťov a drobných cicavcov na prítomnosť vírusu kliešťovej encefalitídy. 6 pp. Entomological Problems 19: 371-376.

 Krabbe E., Enghoff H., 1985: Morphological variability in a population of Orthoporus antillanus (Pocock, 1894) from Barbados, with notes on the taxonomic status of the species (Diplopoda: Spirostreptida, Spirostreptidae). 7 pp. 

 Krajčovičová K., Christophoryová J., 2014: Faunistic survey of pseudoscorpions (Arachnida: Pseudoscorpiones) collected from trees and using Malaise traps in Slovakia and the Czech Republic. (Faunistický prieskum šťúrikov (Arachnida: Pseudoscorpiones) zbieraných na stromoch a pomocou Malaiseho pascí na Slovensku a v Českej republike). 14 pp. Klapalekiana 50(3-4): 167-180.

 Kramp P. L., 1938: Freshwater Hydrozoa. The Zoology of Iceland. Volume II, Part 6. 2 pp. 

 Kramp P. L., 1962: Reports from the Lund Universtity Chile expedition 1948-49. 44. Stephanoscyphus corniformis Komai (Scyphozoa). 4 pp. (in English). Lunds Universitets Arsskrift 58(6): 1-4.

 Krantz G. W., 1970: Results of the Lund University Expedition in 1950-1951. Acari (Mesostigmata): Macrochelidae. 5 pp. South African Animal Life 14.

 Krantz G. W., 1991: Nature of the association between Pisentii-group mites (Acari: Macrochelidae: Macrocheles) and dung beetles of the genus Scarabaeus (Coleoptera: Scarabaeidaea) in southern France. 9 pp. 

 Kranz H., 2009: Diatomeen im 19. Jahrhundert. Typenplatten und Salonpräparate von Johann Dietrich Möller. 111 pp. (in German). Abhandlungen des Naturwissenschaftlingen Vereins in Hamburg 41: 1-111.

 Krapp T., Grasso R., Ruffo S., 2010: New data on the genus Jassa Leach (Amphipoda, Ischyroceridae). Nuevos datos del género Jassa Leach (Amphipoda, Ischyroceridae). 16 pp. Zoologica Baetica 21: 85-100.

 Krapp-Schickel G., Ruffo S., 1990: Marine amphipods of the Canary Islands with description of a new species of Elasmopus. 6 pp. 

 Krasnobaev J. P., 1990: Pauki kamenistych stepej Žigulevskogo zapovednika. 8 pp. 

 Krasnoshtshekov G. P., Tomilovskaya N.S., 1991: Reakciya gammarusov na gomo- i geterotransplantaciyu litshinok gelmintov. 8 pp. Vestnik Zool. 1991(4): 57-64.