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 Karl E., 1969: Untersuchungsergebnisse zur Klärung der Artfrage bei Tarsonemus pallidus Banks. 8 pp. 

 Karny H. H., 1912: Einige weitere Tubuliferen aus dem tropischen Afrika. 13 pp. (in German). Entomologische Rundschau: 29(20): 130-133; 29(21): 138-139; 29(23): 150-151.

 Karpenko S. V., Šachmatova V. I., 1985: Novyj vid roda Lineolepis (Cestoda, Hymenolepididae). 8 pp. 

 Karppinen E., 1957: Die Oribatiden-Fauna einiger Schlag- und Brandflächen. 23 pp. 

 Karppinen E., 1958: Über die Oribatiden (Acar.) der Finischen Waldböden. 43 pp. 

 Karppinen E., 1971: Studies on the Oribatei (Acari) of Norway. 24 pp. 

 Karsch F., 1884: Reise in das Massai-Land gesammelten Myriopoden und Arachnoiden. 6 pp. (in German). 

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 Kasal P., 1982: Theridion antusi sp. n. and Mysmena jobi from Czechoslovakia (Araneida, Theridiidae and Symphytognathidae). 5 pp. [ARA 1271] Acta Entomologica Bohemoslovaca 79: 73-76.

 Kashiwadani H., 1989: New and rare species of Lichens from the Ryukyu Islands, southern Japan. 5 pp. (in Japanese). Memoirs of the National Science Museum 22: 43-47.

 Kashiwadani H., Inoue M., 1993: The lichens of Kushiro Marsh, Hokkaido, Japan. 14 pp. Memoirs of the National Science Museum 26: 53-66.

 Kashiwadani H., Sasaki K., 1987: Lichens of Mt. Hakkoda, northern Japan. 15 pp. (in Japanese). Memoirs of the National Science Museum 20: 67-81.

 Kasprzak K., 1976: Contribution to the knowledge of aquatic Oligochaeta of Italy. 9 pp. 

 Kasprzak K., 1976: Contribution to the knowledge of aquatic Oligochaeta of Italy. 9 pp. [EVE 372] Acta zoologica cracoviensia 21/10: 331-339.

 Kaston B. J., 1945: New Micryphantidae and Distynidae with notes on other spiders. 14 pp. 

 Katalan-Gateva Š., 1966: Soil and Plant Nematodes in representatives of the family Solanaceae in Thrace. 32 pp. (in Bulgarian). 

 Katsuda N., Yukawa J., 2010: Cecidophagy in adults of Demotina fasciculata (Coleoptera: Chrysomelidae) and its effect on the survival of Andricus moriokae (Hymenoptera: Cynipidae) inhabiting leaf galls on Quercus serrata (Fagaceae). 9 pp. Entomological Science 13(1): 8-16.

 Kaufman Z. S., 1964: The structure of tracheal system in Cryptops sp. (Chilopoda, Scolopendromorpha, Cryptopidae). 7 pp. (in Russian). 

 Kaufmann R., 2000: Verteilungsmuster der epigäischen Fauna in einem Gletschervorfeld. 6 pp. Entomologica Basiliensia 22: 48-53.

 Kauri H., 1954: Report from professor T. Gislén’s expedition to Australia in 1951-1952. 9. Harvest-spiders from S. W. Australia. 8 pp. 

 Kauri H., 1961: Results of the Lund University Expedition in 1950-1951. Opiliones. 89 pp. South African Animal Life 8.

 Kawazoe K., Okabe K., Kawakita A., Kato M., 2010: An alien Sennertia mite (Acari: Chaetodactylidae) associated with an introduced Orinetal bamboo-nesting large carpenter bee (Hymenoptera: Apidae: Xylocopa) invading the central Honshu Island, Japan. 8 pp. Entomological Science 13(3): 303-310.

 Kazmierski A., 1989: Morphological studies on Tydeidae (Actinedida, Acari) I. Remarks about the segmentation, chaetotaxy and poroidotaxy of idiosoma. 15 pp. [M14] [M54] Acta zoologica cracoviensia 32/4: 69-83.

 Kazmierski A., 1997: Tydeus rafalskii sp. n., a new tydeid mite from Poland (Acari: Actinedida: Tydeidae). 6 pp. [ARA1675] Genus 8(1): 55-60.

 Kazmierski A., 1998: Tydeinae of the World: generic relationships, new and redescribed taxa and keys to all species. A revision of the subfamilies Pretydeinae and Tydeinae (Acari: Actinedida: Tydeidae) – part IV. 173 pp. 

 Kazmierski A., 2008: Three new tydein species of the genus Brachytydeus Thor, 1931 sensu André 2005 from Siberia (acari: Acinedida: Tydeidae). 17 pp. Genus 19(4): 827-843.

 Kazmierski A., 2009: Date of publication of three Brachytydeus species (Tydeidae) – disclaimer. 1 pp. (in English). Genus 20(1): 187.

 Kazmierski A., Panou H. N., 1997: Lorryia reticuloinsignia, a new species of tydeid mite from the Balcan Peninsula (Acari: Prostigmata). 8 pp. [ARA1676] [M65] Genus 8(3-4): 727-734.

 Kazmierski L., 2009: Brachytydeus szeptyckii sp. n. (Acari: Actinedida: Tydeidae); a new tyneid mite from Poland. 7 pp. Acta zoologica cracoviensia 52B(1-2): 79-85.

 Keable S. J., 2006: Taxonomic revision of Natatolana (Crustacea: Isopoda: Cirolanidae). 112 pp. Records of the Australian Museum 58(2): 133-244.

 Keeton W. T., 1959: A revision of the Milliped Genus Brachoria (Polydesmida: Xystodesmidae). 58 pp. 

 Keirans J. E., 1985: Amblyomma antillorum Kohls, 1969 (Acari: Ixodidae): description of the immature stages from the rock iguana, Iguana pinguis (Sauria: Iguanidae) in the British Virgin Islands. 5 pp. Proc. Entomol. Soc. Wash. 87(4): 821-825.

 Keirans J. E., 1985: Amblyomma paulopunctatum Neumann (Ixodoidea: Ixodidae): Redescription of the male and female, with an account of its known hosts and distribution. 9 pp. Proc. Entomol. Soc. Wash. 87(3): 489-497.

 Keirans J. E., Robbins R. G., 1987: Amblyomma babirussae Schulze (Acari: Ixodidae): Redescription of the male, female, and nymph and description of the larva. 16 pp. [PPE 43767] [M39] Proc. Entomol. Soc. Wash. 89(4): 646-659.

 Kekenbosch J., 1958: Notes sur les Araignees de la faune de Belgique. 12 pp. (in French). Bulletin Institut royal des Sciences naturelles de Belgique 34(26): 1-12.

 Kenk R., 1977: Freshwater triclads (Turbellaria) of North America, IX: The genus Sphalloplana. 38 pp. Smithsonian Contributions to Zoology

 Kenk R., 1989: Revised list of the North American freshwater Planarians (Platyhelminthes: Tricladida: Paludicola). 10 pp. Smithsonian Contributions to Zoology

 Kensley B. F., 1971: Termitophilous isopods from Southern Africa. 17 pp. 

 Kensley B., Walker I., 1982: Palaemonid shrimps from the Amazon basin, Brazil (Crustacea: Decapoda: Natantia). 28 pp. Smithsonian Contributions to Zoology

 Kerényi-Nemestóthy K., 1984: Tarsonemiden Milben der gärtnerischen Kulturpflanzen Ungarns. 3 pp. (in German). Folia Entomologica Hungarica (S.N.) 45(1): 45-47.

 Kesling R. V., 1951: The morphology of ostracod molt stages. 96 plates, 324 pp.  Sleva 20%!

 Khalaji-Pirbalouty V., Sari A., 2006: Description of Gammarus balutchi spec. nov. (Amphipoda: Gammaridae) from Iran, based on light and electron microscopy. 10 pp. Zoologische Mededelingen Leiden 80(1): 91-100.

 Khanna V., Tripathi J. C., 1987: Trachycormocephalus paranudus, a new scolopendrid centipede from Hissar District (Haryana), India (Chilopoda). 3 pp. 

 Kiefer F., 1967: Zwei neue Parastenocaris-Arten (Copepoda Harpacticoida) aus dem unteren Amazonas-Gebiet. [Duas espécies novas de Parastenocaris (Copepoda Harpacticoida) da Baixa Amazônia). 4 pp. Amazoniana 1(2): 131-134.

 Kiefer F., 1968: Zwei weitere Parastenocaris-Arten (Copepoda Harpacticoida) aus dem mittleren Amazonas-Gebiet. [Duas outras espécies de Parastenocaris (Copepoda Harpacticoida) da Amazônia Central.] 2 pp. Amazoniana 1(3): 257-258.

 Kiefer M., Cyprich D., 1973: Opakované testovanie kliešťa obyčajného (Ixodes ricinus L.) na citlivosť voči DDT a iné acaricidy v Šúri pri Bratislave. 4 pp. 

 Kiefer, Krumpál, Sidor, Cyprich, 1983: Akarofauna veĺkochovu hospodárských zvierat Agrokomplexu v Nitre. 4 pp. 

 Kielczewski B., Wisniewski J., 1980: Individuelle Variabilität der Weibchen von Proctolaelaps fiseri Samšinák (Acari: Blattisociidae). 8 pp. [ARA 667] Annales Zoologici 35/26: 475-483