Indohya humphreysi (Harvey, 1993)

Harvey, Mark S., Burger, Mieke A. A., Abrams, Kym M., Finston, Terrie L., Huey, Joel A. & Perina, Giulia, 2023, The systematics of the pseudoscorpion genus Indohya (Pseudoscorpiones: Hyidae) in Australia, Zootaxa 5342 (1), pp. 1-119 : 34

Indohya humphreysi (Harvey, 1993)

( Figs. 1–3 , 5 )

urn:lsid:zoobank.org:act:C0536E86-4699-408A-9920-D664CEF10324

Gen. et n. sp.: Harvey 1991a: 500.

Hyella humphreysi Harvey 1993: 29–31 , figs. 2, 89–99; Harvey, Gray, Hunt and Lee 1993: 131, 134; Harvey 1996: 157; Harvey, Shear and Hoch 2000: fig. 4.2b.

Indohya humphreysi (Harvey) : Harvey and Volschenk 2007: 395–397, figs. 5–9, 14, 43–45.

Material examined. Holotype female. AUSTRALIA: Western Australia: Papillon Cave , C-15, Cape Range, Western Australia, Australia , 22°13′S, 113°59′E, under stone in dark zone, 28 June 1989, M.S. Harvey, W.F. Humphreys ( WAM T20756 , formerly 90/726).

Paratypes. AUSTRALIA: Western Australia: 1 tritonymph, Papillon Cave , C-15, Cape Range, 22°13′S, 113°59′E, 29 March 1991, D. Brooks ( WAM T23311 , formerly 91/1054); 1 tritonymph, Trionomo Cave , C-103, Cape Range, 22°07′S, l 13°59′E, 15 August 1988, D. Brooks ( WAM T20757 , formerly 90/727) .

Other material. AUSTRALIA: Western Australia: 2 Ô, 1 deutonymph, Papillon Cave , C-15, Cape Range peninsula, 22°13′S, 113°59′E, 15 May 1995, R . D. Brooks ( WAM T40850 ); 2 tritonymphs, Cape Range , Papillon Cave , C-15, 22°12′45″S, 113°58′41″E, 23 September 2014, dark zone, under rocks, M.S. Harvey, J. Huey, N. Tartanic, N. Wilson ( WAM T136663 , T136677 ); 1 tritonymph, cave C-65, Cape Range peninsula, 22°05′42″S, 114°00′03″E, 18 August 1992, W.F. Humphreys, R . D. Brooks ( WAM T44321 ) .

Diagnosis. Indohya humphreysi belongs to a group of Indohya species that have 12 setae on the carapace and no eyes. It differs from all others except I. anastomosa and I. aquila by the presence of only 2 setae on tergite I. It differs from I. aquila by being larger (e.g. pedipalpal chela (with pedicel) 1.52–1.65 mm (Ô), 2.09 mm (♀) in I. humphreysi and 1.120 mm (Ô) in I. aquila ) and from I. anastomosa by the position of trichobothrium isb which is closer to esb than to ist in I. anastomosa ( Fig. 6C ) and midway between esb and ist in I. humphreysi .

There are no unique nucleotide substitutions in COI mtDNA that distinguish this species from all other species of Indohya . The two sequenced specimens differ from all other sequenced specimens of Indohya by 10.1–24.9% (Table 2).

Description (adult). See Harvey (1993).

Description (tritonymph). See Harvey (1993).

Description (deutonymph). See Harvey and Volschenk (2007).

Distribution and remarks. Indohya humphreysi has been recorded from three caves, Papillon Cave, Trionomo Cave and C-65, in the Cape Range karst ecosystem ( Fig. 5 ).

Conservation assessment. Although I. humphreysi has only been found in three caves, two of these caves (Trionomo Cave and C-65) are located within a conservation reserve (Cape Range National Park), and the third, Papillon Cave , has no obvious threatening processes. Therefore, we do not currently consider this species to be of conservation concern.

Pilbara fauna

Figures

FIGURE 1. Maximum likelihood phylogeny of Hyidae and other neobisioids, based on alignment of concatenated COI, 18S and 28S. Ultrafast bootstrap values are presented for nodes greater than 80%.

FIGURE 2. Maximum likelihood phylogeny of Australian Indohya, using COI, 18S and 28S concatenated dataset. Bootstrap values are presented for all nodes. The genes amplified for each specimen are depicted with black squares in the gene matrix.

FIGURE 3. Maximum likelihood phylogeny of Australian Indohya, using COI. Bootstrap values are presented for all nodes.

FIGURE 5. Maps of north-western Australia depicting recorded distributions of the subterranean species of Indohya from the Pilbara and Cape Range region.

FIGURE 6. Maps of north-western Australia depicting recorded distributions of the three epigean species of Indohya from the Kimberley:A, epigean species; B, troglobitic species.