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Villegas-Guzmán, G.A. (2004a). Pseudoescorpiones (Arachnida: Pseudoscorpionida) foréticos de un coleóptero Chalcolepidius sp. (Coleoptera; Elateridae) de Jalisco, México. In: Morales, M.A., Ibarra, M., Rivera, A. and Stanford, S. (ed.) Entomología Mexicana Sociedad Mexicana de Entomología, México 3: 2–4. -- Show included taxa
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Wheeler, W.C., Giribet, G. & Edgecombe, G.D. (2004). Arthropod systematics. The comparative study of genomic, anatomical, and paleontological information. In: Cracraft, J. and Donoghue, M. (ed.) Assembling the Tree of Life Oxford University Press, New York: 281–295. -- Show included taxa
Yeates, D.K., Harvey, M.S. & Austin, A.D. (2004). New estimates for terrestrial arthropod species-richness in Australia. Records of the South Australian Museum, Monograph Series 7: 231–241. -- Show included taxa
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Zaragoza, J.A., Aguin-Pombo, D. & Nunes, E. (2004). Paraliochthonius cavalensis, nuevas especie cavernícola de Madeira (Arachnida, Pseudoscorpiones, Chthoniidae). Revista Ibérica de Aracnología 9: 343–351. -- Show included taxa
Ziegler, T. (2004). Phoresie bei Pseudoskorpionen - ein selten beobachtetes Phaenomen. Reptilia 9(3): 4–6. -- Show included taxa
Alexander, K.N.A. (2005). Neobisium carpenteri (Kew) (Arachnida: Pseudoscorpiones) - a false scorpion new to County Kerry, Ireland. Bulletin of the Irish Biogeographical Society 29: 242–244. -- Show included taxa