The systematics of the pseudoscorpion genus Indohya (Pseudoscorpiones: Hyidae) in Australia Author Harvey, Mark S. Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Adjunct, School of Biological Sciences, University of Western Australia, Crawley, Western Australia 6009, Australia mark.harvey@museum.wa.gov.au Author Burger, Mieke A. A. Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 mark.harvey@museum.wa.gov.au Author Abrams, Kym M. Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Present address: Department of Water and Environmental Regulation, Locked Bag 10, Joondalup DC, Western Australia 6919, Australia https: // orcid. org / 0000 - 0003 - 4543 - 9255 mark.harvey@museum.wa.gov.au Author Finston, Terrie L. Adjunct, School of Biological Sciences, University of Western Australia, Crawley, Western Australia 6009, Australia & Helix Molecular Solutions Pty Ltd, PO Box 155, Leederville, Western Australia 6153, Australia https: // orcid. org / 0000 - 0002 - 1750 - 4577 Author Huey, Joel A. Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Adjunct, School of Biological Sciences, University of Western Australia, Crawley, Western Australia 6009, Australia & Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Present address: Biologic Environmental Survey, East Perth, Western Australia 6004, Australia https: // orcid. org / 0000 - 0001 - 7108 - 0552 mark.harvey@museum.wa.gov.au Author Perina, Giulia Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Present address: Biologic Environmental Survey, East Perth, Western Australia 6004, Australia https: // orcid. org / 0000 - 0001 - 7108 - 0552 & Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, Western Australia 6106, Australia mark. harvey @ museum. wa. gov. au; https: // orcid. org / 0000 - 0003 - 1482 - 0109 https: // orcid. org / 0009 - 0004 - 5278 - 4238 & Subterranean Research and Groundwater Ecology (SuRGE) Group, Trace and Environmental DNA (TrEnD) Laboratory, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6102, Australia https: // orcid. org / 0000 - 0002 - 0349 - 3803 Corresponding author mark.harvey@museum.wa.gov.au text Zootaxa 2023 2023-09-05 5342 1 1 119 http://dx.doi.org/10.11646/zootaxa.5342.1.1 journal article 10.11646/zootaxa.5342.1.1 1175-5334 8323879 A6D20DA1-1C12-454E-B422-D8457CF132FE Indohya damocles Harvey & Volschenk, 2007 ( Figs. 1–3 , 5 ) urn:lsid:zoobank.org:act: 1195D9CF-4E03-484D-8007-F2F1B5594882 Indohya damocles Harvey and Volschenk 2007: 387–390 , figs. 5–9, 14, 17–25. Material examined. Holotype male . AUSTRALIA : Western Australia : Camerons Cave (C-452), Cape Range , 21°58′S , 114°07′E , 21 May 1995 , under rock, calcite pool chamber, dark zone, J.M. Waldock ( WAM T33235 , formerly 97/1). Paratypes . AUSTRALIA : Western Australia : all from Camerons Cave (C-452): 1 tritonymph, 12 August 1993 , W.F. Humphreys , R . D. Brooks , BES 2525 ( WAM T44320 ); 2 ♀ , 28 August 1993 , R . D. Brooks ( WAM T28500– 28501 , formerly 93/1816–1817); 1 Ô, 12 April 1994 , R . D. Brooks ( WAM T44318 ); 1 tritonymph, 12 April 1994 , R . D. Brooks ( WAM T44319 ); 1 Ô, 26 October 1994 , R . D. Brooks ( WAM T33239 , formerly 97/5); 1 tritonymph, 10 May 1995 , W.F. Humphreys et al . ( WAM T33236 , formerly 97/2); 1 deutonymph, 10 May 1995 , W.F. Humphreys et al . ( WAM T33237 , formerly 97/3); 1 ♀ , 10 May 1995 , B. Vine ( WAM T33238 , formerly 97/4) . Other material . AUSTRALIA : Western Australia : 1 specimen , Camerons Cave Waters & Rivers bore, 21°57′49″S , 114°07′18″E , 10 May 2015 , W.F. Humphreys , R . D. Brooks ( WAM T136618 ) . Diagnosis. Indohya damocles belongs to a group of Indohya species that have 12 setae on the carapace and no eyes. It differs from I. anastomosa , I. aquila and I. humphreysi by the presence of 4 setae on tergite I (only 2 setae in I. anastomosa , I. aquila and I. humphreysi ). It differs from I. arnoldstrongi , I. cockingi , I. finitima by having numerous pointed teeth on the fixed chelal finger, and from I. cribbi and I. lynbeazleyae by the partially granulate pedipalpal femur and smooth patella (femur and patella granulate in I. cribbi and I. lynbeazleyae ). It differs from I. jessicae , I. sagmata and I. scanloni by its larger size [e.g. chela (with pedicel) 2.22–2.32 (Ô), 2.22–2.55 ( ♀ ) mm, vs. less than 1.81 mm ]. It also differs from all other Indohya species for which sequence data are available by three synapomorphies in COI mtDNA: at base 100 there is a substitution to A; at base 281 there is a substitution to C; and at base 433 there is a substitution to C. The single sequenced specimen differs from all other sequenced specimens of Indohya by 16.1–28.7% (Table 2). Description (adult). See Harvey and Volschenk (2007) . Description (tritonymph). See Harvey and Volschenk (2007) . Description (deutonymph). See Harvey and Volschenk (2007) . Distribution and remarks. Indohya damocles has only been recorded from Camerons Cave, situated on the outskirts of the Exmouth townsite ( Fig. 5 ). Conservation assessment . Indohya damocles is listed as Critically Endangered by the Biodiversity Conservation Act. The cave is also regarded as a Threatened Ecological Community (the Camerons Cave Troglobitic Community) by the Department of Biodiversity, Conservation and Attractions. Threats to the cave “include uncontrolled access to the cave and its surrounds, altered water levels or quality, pollution, and dumping of waste in the cave” (see https:// www.dpaw.wa.gov.au/images/documents/plants-animals/tecs/Camerons%20Cave.pdf; accessed 15 May 2022 ).