Indohya arcana Harvey &amp; Burger 2023, n. sp.
Creators: name: Harvey, Mark S.
name: Burger, Mieke A. A.
name: Abrams, Kym M.
name: Finston, Terrie L.
name: Huey, Joel A.
name: Perina, Giulia
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Pseudoscorpiones
Hyidae
Indohya
Indohya arcana

description: <i>Indohya arcana</i> Harvey &amp; Burger, n. sp. (Figs. 1–3, 17, 18) urn:lsid:zoobank.org:act: 702077AF-FC70-4698-AA78-AD7247256DAC <b>Material examined.</b> <i>Holotype deutonymph</i>. AUSTRALIA: <i>Western Australia:</i> Yarrie Ridge, bore YP006, 20°36′33.6″S, 120°19′25.4″E, 8 November 2008, troglofauna trap, P. Bell, B. Vine, E. Ridley (WAM T151337). <b>Diagnosis.</b> <i>Indohya arcana</i> is a blind troglobite that differs from all other <i>Indohya</i> species for which sequence data are available by six synapomorphies in <i>COI</i> mtDNA: at base 72 there is a substitution to C; at base 83 there is a substitution to A; at base 102 there is a substitution to G; at base 119 there is a substitution to A; at base 242 there is a substitution to T; and at base 363 there is a substitution to G. The single sequenced specimen differs from all other sequenced specimens of <i>Indohya</i> by 21.4–30.2% (Table 2). <b>Description (deutonymph).</b> <i>Colour (Fig. 17):</i> Very pale, yellow-white. <i>Chelicera:</i> hand with 5 setae, movable finger with 1 sub-medial seta. <i>Pedipalp:</i> trochanter 2.33 ×, femur 5.53 ×, patella 3.36 ×, chela (with pedicel) 4.21 ×, chela (without pedicel) 4.03 ×, hand (without pedicel) 1.59 × longer than broad, movable finger 1.45 × longer than hand (without pedicel). Fixed finger with 6 trichobothria (Fig. 18), <i>eb</i>, <i>est</i>, <i>et</i>, <i>ib</i>, <i>ist</i> and <i>it</i> present; movable finger with 2 trichobothria, <i>b</i> and <i>t</i> present. Fixed chelal finger with 42 teeth, low, juxtadentate, and mostly quadrate; movable chelal finger with 20 teeth, low and juxtadentate. <i>Cephalothorax:</i> carapace 1.01 × longer than broad; with 11 setae, arranged 4: 0: 3: 2: 2; without furrows; eyes absent. Coxal chaetotaxy 3: 4: 3: 3. <i>Legs:</i> metatarsi and tarsi not fused. <i>Abdomen:</i> tergal chaetotaxy 4: 4: 6: 5: 6: 6: 6: 6: 6: 4 (including 2 tactile setae):? (including 2 tactile setae): 2; sternal chaetotaxy 0: (0) 2 (0): (1) 4 (1): 6: 6: 6: 6: 6: 6 (including 2 tactile setae): 4 (including 2 tactile setae): 2. <i>Dimensions (mm):</i> holotype (WAM T151337). Body length 1.24. Pedipalp: trochanter 0.210 / 0.090, femur 0.525 / 0.095, patella 0.370 / 0.110, chela (with pedicel) length 0.820 / 0.195, chela (without pedicel) length 0.785, hand (without pedicel) length 0.310, movable finger length 0.450. Carapace 0.415 / 0.410. <b>Distribution and remarks.</b> <i>Indohya arcana</i> is a blind, troglobitic species currently represented only by a single deutonymph but, based on available sequence data, it is different from other species. The species was previously known by WAM identification code <i>Indohya</i> ‘PSE177’. <b>Conservation assessment</b>. <i>Indohya arcana</i> has been collected from a single rocky outcrop, Yarrie Ridge (Fig. 5), which has a total area of ca. 20 km 2. This most likely represents its maximum area of occupancy. It therefore represents an extreme short-range endemic species (Harvey 2002). Although the ridge has an active iron ore mine at the southern edge, the species does not meet the status of threatened using the criteria developed by the International Union for Conservation of Nature (2012). <b>Etymology.</b> The specific epithet refers to the use of molecular sequence data to establish that this nymphal specimen represents a distinct species (<i>arcanus</i>, Latin, shut up, secret, private, mysterious) (Brown 1956).
description: Published as part of <i>Harvey, Mark S., Burger, Mieke A. A., Abrams, Kym M., Finston, Terrie L., Huey, Joel A. &amp; Perina, Giulia, 2023, The systematics of the pseudoscorpion genus Indohya (Pseudoscorpiones: Hyidae) in Australia, pp. 1-119 in Zootaxa 5342 (1)</i> on pages 45-47, DOI: 10.11646/zootaxa.5342.1.1, http://zenodo.org/record/8323879
description: {"references": ["Harvey, M. S. (2002) Short-range endemism among the Australian fauna: some examples from non-marine environments. Invertebrate Systematics, 16, 555 - 570. https: // doi. org / 10.1071 / IS 02009", "Brown, R. W. (1956) Composition of scientific words. Revised Edition. Smithsonian Institution Press, Washington, D. C., 882 pp."]}