Indohya currani Harvey &amp; Burger &amp; Abrams &amp; Finston &amp; Huey &amp; Perina 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 currani

description: <i>Indohya currani</i> Harvey &amp; Burger, n. sp. urn:lsid:zoobank.org:act: F783CA29-C4B6-4511-B992-80A67F7EFCCA (Figs. 1–3, 6B, 54, 55) <b>Material examined.</b> <i>Holotype female</i>. AUSTRALIA: <i>Western Australia:</i> Matsu, ca. 101 km SSW. of Kununurra, 16°41′39.20″S, 128°19′41.27″E, 16 July–10 September 2014, troglofauna trap, 13 m depth, subterranean above water table, M.K. Curran, J.S. Cocking (WAM T134915). <b>Diagnosis.</b> <i>Indohya currani</i> has 16 carapaceal setae and lacks eyes, thus resembling <i>I. gollum</i>, <i>I. napierensis</i> and <i>I. typhlops</i>. It differs from <i>I. gollum</i> and <i>I. napierensis</i> in being smaller [e.g. chela (with pedicel) 0.855 (&amp;female;) mm vs. greater than 1.8 mm in <i>I. gollum</i> and <i>I. napierensis</i>], and from <i>I. typhlops</i> by its narrow chela [chela (with pedicel) 3.98 (&amp;female;) × longer than broad vs. 3.21 (&amp;female;) × longer than broad in <i>I. typhlops</i>] and by having more teeth on the fixed chelal finger [46 teeth (&amp;female;), vs. 41 teeth (&amp;female;). There are no unique nucleotide substitutions in <i>COI</i> mtDNA that distinguish this species from all other species of <i>Indohya</i>. The single sequenced specimen differs from all other sequenced specimens of <i>Indohya</i> by 17.6–27.3% (Table 2). <b>Description (adult).</b> <i>Colour (Fig. 54):</i> Carapace and pedipalps deep yellow-brown, tergites light brown. <i>Setae and cuticle:</i> setae long, mostly straight and acicular; most cuticular surfaces smooth and glossy. <i>Chelicera:</i> surface smooth; hand with 5 setae, movable finger with 1 sub-medial seta, all setae acuminate; galea present, long, slender and slightly curved; fixed finger with 12 (&amp;female;) teeth, each approximately same size; movable finger with 6, each approximately same size; with 2 dorsal and 1 ventral lyrifissures; lamina exterior absent; rallum with 8 blades, all blades with anterior spinules, basal blade shorter than others. <i>Pedipalp (Fig. 55B):</i> long and slender; trochanter smooth, 2.47 (&amp;female;) ×; femur broadened distally, basal half lightly granulate, without dorsal tactile seta, with 3 stout retrolateral setae near base, 4.63 (&amp;female;) ×; patella broadened distally, smooth, pedicel not strongly pronounced but basal portion slimmer than distal portion, with several small lyrifissures situated basally on dorsal surface, 3.12 (&amp;female;) ×; chela (Fig. 55C): hand cylindrical, with prolateral face lightly granulate, chela (with pedicel) 3.98 (&amp;female;) ×, chela (without pedicel) 3.77 (&amp;female;) ×, hand (without pedicel) 1.53 (&amp;female;) × longer than broad, movable finger 1.41 (&amp;female;) × longer than hand (without pedicel). Fixed finger with 8 trichobothria, <i>eb</i>, <i>esb</i> and <i>isb</i> in straight row at base of finger, <i>ib</i> situated dorsally at the end of the chelal hand, <i>isb</i> at the basal end of the fixed finger, <i>ib</i> situated on dorsum of chelal hand, <i>it</i> closer to <i>et</i> than to <i>est</i>, <i>et</i> slightly distal to <i>it</i>; movable finger with 4 trichobothria, <i>sb</i> closer to <i>b</i> than to <i>st</i>, <i>st</i> situated much closer to <i>t</i> than to <i>sb</i>, ratio <i>sb–st</i> / <i>sb–b</i> = 1.26 (&amp;female;), <i>t</i> acuminate. Both fingers straight in lateral view. Fixed and movable fingers granulate basally, smooth elsewhere. Chelal teeth (Figs. 55D, E) juxtadentate, fixed finger with 46 (&amp;female;) teeth, teeth 1–2, 31, 34, 37, 39 acute, 3–30, 32, 33, 35, 36, 38 and 40–46 rounded, movable finger with 16, low teeth. Venom apparatus present only in movable chelal finger, venom duct long, terminating in nodus ramosus between <i>sb</i> and <i>st</i>. <i>Cephalothorax:</i> carapace (Fig. 55A) sub-rectangular; smooth; anterior margin slightly convex; epistome absent; lateral margins slightly convex; 0.96 (&amp;female;) × longer than broad; &amp;female; with 16 setae arranged 4: 2: 4: 4: 2; without furrows; eyes absent. Manducatory process distally triangular, with 2 distal setae; pedipalpal coxa with 6 additional setae. Coxa I with anterior margin not modified; chaetotaxy of coxae I–IV: &amp;female;, 4: 5: 5: 6. <i>Legs:</i> femora I and II much longer than patellae I and II, respectively; femora I and II with basal swelling; femora I and II each with 2 primary slit sensilla, 1 sub-basally directed longitudinally and 1 sub-distally directed transversely; junction between anterior femora and patellae perpendicular; junction between posterior femora and patellae slightly oblique; femora III and IV much smaller than patellae III and IV, respectively; femur + patella IV 3.33 (&amp;female;) × longer than broad; metatarsi shorter than tarsi; subterminal tarsal seta acuminate; claws smooth, arolium slightly shorter than claws; arolium not divided. <i>Abdomen:</i> tergites not divided; tergal chaetotaxy &amp;female;, 4: 6: 6: 6: 6: 6: 6: 8: 7: 8 (including 2 tactile setae): 5 (including 2 tactile setae): 2; arranged in single rows; sternal chaetotaxy &amp;female;, 6: (1) 8 (1): (3) 7 (3): 10: 9: 10: 10: 10: 10: 7 (including 2 tactile setae): 2; setae of anterior genital operculum (sternite II) of &amp;female; minute; posterior tergites and sternites with several tactile setae; medial sternites without suture line; pleural membrane uniformly granulate; without setae; stigmatic helix present. <i>Genitalia:</i> female: with large gonosac that is covered with scattered pores. <i>Dimensions (mm):</i> female holotype (WAM T134915). Body length (excluding chelicerae) 1.34. Pedipalp: trochanter 0.235 / 0.095, femur 0.555 / 0.120, patella 0.390 / 0.125, chela (with pedicel) 0.855 / 0.215, chela (without pedicel) 0.81, hand (without pedicel) 0.330, movable finger length 0.465. Carapace 0.395 / 0.410. Leg IV: femur + patella 0.400 / 0.120, tibia 0.280 / 0.065, metatarsus 0.155 / 0.045, tarsus 0.250 / 0.035. <b>Distribution and remarks.</b> <i>Indohya currani</i> has been collected from a single borehole at the Matsu mine site SSW. of Kununurra (Fig. 6B). The site is situated within the Ord Victoria Plain bioregion. The species was previously known by WAM identification code <i>Indohya</i> ‘PSE181’. This species has been collected only 10 km from the only known record of <i>Indohya</i> sp. PSE215 which is represented by a single adult chela that was collected from a subterranean bore in the region of the Argyle Diamond Mine (Fig. 6B). As discussed under <i>Indohya</i> sp. PSE215, they differ in size [chela (with pedicel) 1.15 mm in <i>I.</i> sp. PSE215, and 0.855 (&amp;female;) mm in <i>I. currani</i>] and the positions of trichobothria <i>eb</i>, <i>esb</i> and <i>isb</i> (widely spaced in <i>I.</i> sp. PSE215, and closely spaced in <i>I. currani</i>). <b>Conservation assessment</b>. <i>Indohya currani</i> has been found at a single site in the eastern Kimberley. The total extent of the subterranean habitat is unknown, and the surface terrain is not heavily dissected or constrained by mesas. There are insufficient data to assess whether this species meets the status of threatened using the criteria developed by the International Union for Conservation of Nature (2012). <b>Etymology.</b> This species is named for Mike Curran, collector of the holotype and many other interesting subterranean invertebrates.
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 97-100, DOI: 10.11646/zootaxa.5342.1.1, http://zenodo.org/record/8323879