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Main, B.Y. (1981). A comparative account of the biogeography of terrestrial invertebrates in Australia: some generalizations. In: Keast, A. (ed.) Ecological biogeography of Australia Junk, The Hague 2: 1055–1077. -- Show included taxa
Marcano, F. E. de J. (1981). Solpugida en el país. In: Naturalista Postal. Inst. Invets. Zool. Bot., UASD: 178. -- Show included taxa
Markkula, M. & Tiitanen, K. (1981). The pseudoscorpionid Chernes cimicoides as a predator of the predatory mite Phytoseiulus persimilis on cucumber cultures in glasshouses. Annales Agriculturae Fennici 20: 28–31. -- Show included taxa
Matthiesen, F.A. & Hahn, N.S. (1981). Forésia em pseudo-escorpioes brasileiros. Ciência e Cultura 33: 689–690. -- Show included taxa
Maury, E.A. (1981). Un nuevo género de Daesiidae de la Argentina (Arachnida, Solifugae). Comunicactiones del Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", Entomologia 1: 75–82. -- Show included taxa
Mendel, H. (1981). A review of Suffolk pseudoscorpions. Transactions of the Suffolk Natural History Society 18: 226–232. -- Show included taxa
Miller, S.E. & Menke, A.S. (1981). Entomological bibliography of the California Islands. Occasional Papers of the Santa Barbara Museum of Natural History 11: 1–78. -- Show included taxa
Muchmore, W.B. (1981a). Cavernicolous species of Larca, Archeolarca and Pseudogarypus with notes on the genera, (Pseudoscorpionida, Garypidae and Pseudogarypidae). Journal of Arachnology 9: 47–60. -- Show included taxa
Muchmore, W.B. (1981b). Redescription of Chthonius virginicus Chamberlin (Pseudoscorpionida, Chthoniidae). Journal of Arachnology 9: 110–112. -- Show included taxa
Muchmore, W.B. (1981c). New pseudoscorpion synonymies (Pseudoscorpionida, Chernetidae and Cheliferidae). Journal of Arachnology 9: 335–336. -- Show included taxa
Muchmore, W.B. (1981d). The identity of Olpium minutum Banks (Pseudoscorpionida, Olpiidae). Journal of Arachnology 9: 337–338. -- Show included taxa
Muchmore, W.B. (1981e). Pseudoscorpions from Florida and the Caribbean area. 11. A new Parachelifer from the Virgin Islands (Cheliferidae). Florida Entomologist 64: 189–191. -- Show included taxa
Muchmore, W.B. (1981f). Cavernicolous pseudoscorpions in North and Middle America. In: Proceedings of the 8th International Congress of Speleology 1: 381–384. -- Show included taxa
Ohmart, C.P. & Voigt, W.G. (1981). Arthropod communities in the crown of the natural and planted stands of Pinus radiata (Monterey Pine) in California. Canadian Entomologist 113: 673–684. -- Show included taxa
Palacios-Vargas, J.G. (1981). Los artrópodes de la gruta de Acuitlapan, Gro.. Folia Entomologica Mexicana, XVI Congreso Nacional de Entomologia 48: 64–65. -- Show included taxa
Parker, B.L., Booth, R.H. & Haines, C.P. (1981). Arthropods infesting stored cassava (Manihot esculenta Crantz) in peninsular Malaysia. Protection Entomology 3: 141–156. -- Show included taxa
Peck, S.B. (1981a). Community composition and zoogeography of the invertebrate cave fauna of Barbados. Florida Entomologist 64: 519–527. -- Show included taxa
Peck, S.B. (1981b). Zoogeography of invertebrate cave faunas in southwestern Puerto Rico. National Speleological Society Bulletin 43: 70–79. -- Show included taxa
Peck, S.B. & Kukalova-Peck, J. (1981). The subterranean fauna and conservation of Mona Island (Puerto Rico): a Caribbean karst environment. National Speleological Society Bulletin 43: 59–68. -- Show included taxa
Pieper, H. (1981). Die Pseudoskorpione von Madeira und nachbarinseln. Bocagiana, Funchal 60: 1–7. -- Show included taxa
Platnick, N.I. & Shadab, M.U. (1981a). On Central American Cryptocellus (Arachnida, Ricinulei). American Museum Novitates 2711: 1–13. -- Show included taxa
Platnick, N.I. & Shadab, M.U. (1981b). On the Cryptocellus centralis group (Arachnida, Ricinulei). Bulletin of the American Museum of Natural History 170: 18–22. -- Show included taxa
Quintero, D., Jr (1981). The amblypygid genus Phrynus in the Americas (Amblypygi, Phrynidae). Journal of Arachnology 9: 117–166. -- Show included taxa
Rafalski, J. (1981). Pajęczaki (Arachnida). Przeglad Zoologiczny 25: 222–228. -- Show included taxa