166 research outputs found
FIGURE 2 in Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia
No full textFIGURE 2. Pilbarana grandis sp. nov. holotype male WAM C78830, 7mm. A, whole animal with scale; B, antenna 1; C, antenna 2; D, mandible; E, maxilla 1; F, maxilla 2; G, maxilliped.Published as part of Stringer, Danielle N., King, Rachael A., Austin, Andrew D. & Guzik, Michelle T., 2022, Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia, pp. 559-573 in Zootaxa 5188 (6) on page 564, DOI: 10.11646/zootaxa.5188.6.4, http://zenodo.org/record/710369
FIGURE 1 in Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia
No full textFIGURE 1. Map of the Pilbara region and associated major catchments indicating sampling locations for the new species of Pilbarana. Circle (purple): P. grandis sp. nov., and Triangle (orange): P. lowryi sp. nov.Published as part of Stringer, Danielle N., King, Rachael A., Austin, Andrew D. & Guzik, Michelle T., 2022, Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia, pp. 559-573 in Zootaxa 5188 (6) on page 561, DOI: 10.11646/zootaxa.5188.6.4, http://zenodo.org/record/710369
Pilbarana lowryi Stringer & King & Austin & Guzik 2022, sp. nov.
No full textPilbarana lowryi Stringer & King sp. nov. (Figs. 5–7) urn:lsid:zoobank.org:act: 35C8B0FC-98EE-411E-8AD8-C93784B618B0 Material examined. Holotype: female, WAM C78833 (10:7951; GenBank COI: OK170015, 28S: OK257013), Solomon Mine Project, Valley of the Kings Iron Deposit, 60 km north of Tom Price, WA, 22°09′45.36ʺS 117°53′39.36ʺE, coll. P. Bell and E. S. Volschenk, 20 January 2010. Paratypes: 1 female, WAM C78834 (10:0087; GenBank COI: OK170006, 28S: OK257012), Cappers Well, 70 km north of Tom Price, WA, 22°03′44.62ʺS 117°59′57.77ʺE, coll. S. Eberhard and S. Catomore, 7 October 2010; 1 male WAM C76988 (10:0082; GenBank COI: OP160221), Pigeon Well Bore, 70 km north of Tom Price, WA, 22°01′51.04ʺS 118°03′32.81ʺE, coll. S. Eberhard and S. Catomore, 7 October 2010. Diagnosis. Head with antennal sinus concave. Antenna 1 peduncular article 1 slightly longer than article 2. Antenna 2 peduncular articles 4–5 distinctly shorter than length of head; flagellum equal in length to peduncular article 5. Gnathopod 1 propodus approximately 2 times as long as broad; carpus approximately 3.5 times as long as broad. Pereopods 3–4 coxae with indistinct anterior lobe. Uropod 1 peduncle with one robust basofacial seta. Uropod 2 peduncle longer than inner ramus. Description. Holotype female. Length 8.7 mm. Head (Fig. 5A) with antennal sinus concave or rounded, anteroventral corner rounded. Antenna 1 (Fig. 5B) peduncular article 1 slightly longer than article 2; peduncular article 3 around one third length of article 2; flagellum of 18 articles, with one ventral aesthetasc on proximal margin of most articles. Antenna 2 (Fig. 5C) slender, around two thirds length of antenna 1; peduncular article 4 approximately equal in length to peduncular article 5, both articles shorter than length of head; flagellum of 7 articles, equal in length to peduncular article 5. Mandible (Fig. 5D) palp article 1 twice as long as broad, around half length of articles 2 and 3, articles 2 and 3 approximately equal in length. Maxilla 1 (Fig. 5E) outer plate with six denticulate robust setae. All other mouthparts (Figs. 5F, G) as in generic description. Gnathopod 1 (Fig. 6A) coxa anteriorly projected with one associated seta, posterodistal corner reduced; propodus approximately 2 times as long as broad; carpus approximately 3.5 times as long as broad. Gnathopod 2 (Figs. 6B) coxa anteriorly projected with associated setae; propodus approximately 2 times as long as broad. Pereopods 3–4 (Figs. 6C, D) coxae with indistinct anterior lobe. Pereopod 5 (Fig. 6E) coxa anterior lobe gradually less distinct, with associated seta, posterior lobe very small. Uropod 1 (Fig. 7A) peduncle with one robust basofacial seta, row of robust setae along dorsal margin. Uropod 2 (Fig. 7B) peduncle longer than inner ramus, row of setae along dorsal margin. Uropod 3 (Fig. 7C) outer ramus cylindrical with 2 articles, first article approximately 1.5 times length of second article. Distribution. 60–70 km north of Tom Price, Fortescue River Basin, Pilbara, Western Australia. Etymology. Named in honour of Dr Jim Lowry for his substantial and valuable contribution to Australian amphipod taxonomy. Remarks. Specimens of P. lowryi sp. nov. were sampled from three bores within the Fortescue River Basin near the Hamersley Range in the central area of the Pilbara, approximately 60–70 km north of the town of Tom Price (Fig. 1). The holotype specimen was collected from a deposit within the Solomon Mining Project, while paratypes were sampled from bores outside the impacted region. These specimens were found to be morphologically identical, and molecular analyses revealed relatively low molecular COI divergence estimates of between 2.8–3.1%. These divergences suggest some slight phylogeographic structuring of populations, potentially due to distance between collection sites, but are, nonetheless, within the range of amphipod intraspecific variation (Tempestini et al. 2018; King et al. 2022). In addition, no juveniles were examined and so should be assessed in further collections, and no morphological differences were observed between males and females (as for P. grandis sp. nov.).Published as part of Stringer, Danielle N., King, Rachael A., Austin, Andrew D. & Guzik, Michelle T., 2022, Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia, pp. 559-573 in Zootaxa 5188 (6) on pages 566-567, DOI: 10.11646/zootaxa.5188.6.4, http://zenodo.org/record/710369
Pilbarana grandis Stringer & King & Austin & Guzik 2022, sp. nov.
No full textPilbarana grandis Stringer & King sp. nov. (Figs. 2–4) urn:lsid:zoobank.org:act: D7C6FEE5-FF95-49BB-83FB-47875CC57A15 Material examined. Holotype: male, WAM C78830 (RL1779), Cork Tree Well, Cane River Conservation Park, WA, 22°21′22.0ʺS 115°30′35.4ʺE, coll. R. Leijs and R. A. King, 28 June 2011. Paratypes: 3 males, 1 female, 1 juvenile, WAM C78831 (RL1779; GenBank COI: OK170022, OK170023), collection data as for holotype; 1 male, WAM C78832 (RL1750), Cork Tree Well, Cane River Conservation Park, WA, 22°21′22.0ʺS 115°30′35.4ʺE, coll. R. Leijs and R. A. King, 24 June 2011. Diagnosis. Head with antennal sinus square-shaped. Antenna 1 peduncular article 1 approximately equal in length to article 2. Antenna 2 peduncular articles 4–5 distinctly longer than length of head; flagellum shorter than peduncular article 5. Gnathopod 1 propodus approximately 2.5 times as long as broad; carpus greater than 4 times as long as broad. Pereopods 3–4 coxae with small anterior lobe. Uropod 1 peduncle with two or more robust basofacial setae. Uropod 2 peduncle similar in length to inner ramus. Description. Holotype male. Length 7.0 mm. Head (Fig. 2A) with antennal sinus square-shaped, anteroventral corner rounded. Antenna 1 (Fig. 2B) peduncular article 1 approximately equal in length to article 2; peduncular article 3 around one third length of article 2; primary flagellum of 16 articles, with one ventral aesthetasc on proximal margin of most articles. Antenna 2 (Fig. 2C) slender, around two thirds length of antenna 1; peduncular article 4 approximately equal in length to peduncular article 5, both articles each longer than length of head; flagellum of 7 articles, shorter than peduncular article 5. Mandible (Fig. 2D) palp article 1 twice as long as broad, around half length of articles 2 and 3, articles 2 and 3 approximately equal in length. Maxilla 1 (Fig. 2E) outer plate with seven denticulate robust setae. All other mouthparts (Figs. 2F, G) as in generic description. Gnathopod 1 (Fig. 3A) coxa anteriorly projected with one associated seta, posterodistal corner reduced and somewhat concave; propodus approximately 2.5 times as long as broad; carpus greater than 4 times as long as broad. Gnathopod 2 (Figs. 2A, 3B) coxa anteriorly projected with associated seta, propodus approximately 2 times as long as broad. Pereopods 3–4 (Figs. 3C, D) coxae with small anterior lobe and associated setae. Pereopods 5–7 (Figs. 2A, 3E–G) coxae anterior lobe gradually less distinct (coxae 5–6 lobe with associated seta), posterior lobe very small. Uropod 1 (Fig. 4A) peduncle with two robust basofacial setae, row of robust setae along dorsal margin. Uropod 2 (Fig. 4B) peduncle similar in length to inner ramus, row of setae along dorsal margin. Uropod 3 (Fig. 4C) outer ramus cylindrical with 2 articles, first article approximately 1.6 times length of second article. Distribution. Cane River Conservation Park, Ashburton River Basin, Pilbara, Western Australia. Etymology. This species name is taken from the Latin word ‘grandis’, and refers to the large body size of this and other species of Pilbarana. Remarks. Overall, the two new species of Pilbarana can be distinguished morphologically based on the shape of the antennal sinus, the length and elongation of antennal articles, differences in the shape of coxae, the length of the first gnathopod propodus, the number of robust basofacial setae on the peduncle of the first uropod, and the length of the peduncle of the second uropod versus the length of the rami. Examination of specimens of P. grandis sp. nov. has revealed that individuals may possess between two (most common) and four robust basofacial setae on the peduncle of the first uropod, with the number of basofacial setae further fluctuating, in some cases, between the pair of uropods for a single specimen. Specimens (except for juveniles), nonetheless, never possess only a single basofacial seta, contrasting with specimens of P. lowryi sp. nov. that always exhibit only one robust basofacial seta on the peduncle of the first uropod. The number of robust basofacial setae on the peduncle of uropod 1 is one of the few morphological characters that separate distinct lineages of Nedsia from the Pilbara (King et al. 2022) and, consequently, appears to represent a useful and consistent distinguishing eriopisid trait. Molecular analyses further revealed that the two new species of Pilbarana are highly divergent genetically, with approximately 13–14.5% COI divergence estimated (with 0.2% between sequences of P. grandis individuals). This level of divergence is well above the 5–10% threshold principally followed by King et al. (2022) in their description of new Nedsia species, and is indicative of long-term isolation in discrete (and distant) subterranean habitats. Pilbarana grandis has, thus far, only been sampled from one well in the Cane River Conservation Park in the Pilbara region and is located approximately 250 km from bores in the Fortescue Basin where P. lowryi was collected (Fig. 1).Published as part of Stringer, Danielle N., King, Rachael A., Austin, Andrew D. & Guzik, Michelle T., 2022, Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia, pp. 559-573 in Zootaxa 5188 (6) on pages 563-566, DOI: 10.11646/zootaxa.5188.6.4, http://zenodo.org/record/710369
Pilbarana Stringer & King & Austin & Guzik 2022, gen. nov.
No full textPilbarana Stringer & King gen. nov. urn:lsid:zoobank.org:act: 39BF6911-DFF8-440F-B4BB-3DDA3E0DD75D Type species: Pilbarana grandis sp. nov. Included species: Pilbarana grandis sp. nov. and Pilbarana lowryi sp. nov. Diagnosis. Head with weakly concave antennal sinus.Antenna 1 not longer than half body length. Maxilla 1 inner plate with one distal robust seta. Coxae reduced, with coxae 1–4 lengths (depths) distinctly shorter than pereonite lengths; coxae 1–2 anteriorly projected/produced, coxae 3–4 with small to indistinct anterior lobe and associated seta(e), posterior lobe indistinct, coxae 5–7 with anterior lobe gradually less distinct (coxae 5–6 anterior lobe with associated setae), posterior lobe very small. Coxal gills present on coxae 3–6, sternal gills absent. Pereonite 1 with concave posterodistal corner; pereonites 2–7 laterally square-shaped, as broad as long, vermiform body shape. Gnathopod 1 carpus at least 3.5 times as long as broad, longer than propodus; propodus with palm distinctly transverse. Gnathopod 2 propodus approximately 4.5 times length of carpus, palm enlarged, strongly oblique. Pereopods 5–7 basis not distinctly expanded posteriorly, pereopod 7 without lobe on posterodistal corner. Uropod 1 peduncle 2 times length of rami, with one or more robust basofacial seta(e). Uropod 3 strongly extended, distinctly larger than uropod 1; outer ramus cylindrical, larger than inner ramus and apically concave. Description. Head with rostrum weak to obsolete; lateral cephalic lobes moderately to strongly projecting, broad, antennal sinus present, weakly concave; eyes absent. Antenna 1 not longer than half body length; longer than antenna 2; flagellum about 1.2 times length of peduncle; accessory flagellum of two articles, second article tiny. Antenna 2 flagellum shorter than peduncle; calceoli absent. Mandible palp of three articles, terminal article linear or tapered with long apical setae; molar small and triturative. Maxilla 1 inner plate ovate with one distal robust seta; outer plate with denticulate robust setae; palp of two articles. Maxilla 2 inner plate with row of simple and plumose apical setae. Maxilliped inner and outer plates moderately setose, outer plate with smooth edge (not serrated as in Nedsia). Coxae 1–7 short, broader than long with few or no posterior setae; coxae 1–4 lengths (or depths) distinctly shorter than pereonite lengths; coxae 1–2 anteriorly projected/produced, coxae 3–4 with small to indistinct anterior lobe and associated seta(e), posterior lobe indistinct, coxae 5–7 with anterior lobe gradually less distinct (coxae 5–6 anterior lobe with associated setae), posterior lobe very small; coxae 3–6 with simple ovate gills, coxa 6 gill smallest; coxae 2–5 with thin, poorly setose oostegites. Thoracic segments lacking sternal gills. Pereonite 1 with concave or ‘cut out’ posterodistal corner; pereonites 2–4 with distinctly lobed posterodistal corners; pereonites 5–7 slightly lobed at posterodistal corners with associated setae. Gnathopods 1–2 subchelate, not sexually dimorphic. Gnathopod 1 decidedly smaller than gnathopod 2; carpus at least 3.5 times as long as broad, with multiple rows of setae, longer than propodus; propodus with palm distinctly transverse with two robust setae at palm corner. Gnathopod 2 carpus much shorter than propodus, similar length to merus; propodus approximately 4.5 times length of carpus, with palm enlarged, strongly oblique, with robust setae, including one long robust seta, at palm corner and along palm margin. Pereopods 3–4 similar, basis not expanded posteriorly. Pereopods 5–6 basis with slight posterior expansion, remaining longer than broad, small lobe on posterodistal corner. Pereopod 7 longer than pereopods 5–6; basis longer than broad, not expanded posteriorly, no lobe present on posterodistal corner. Epimera 1–3 with serrated or sculptured posterodistal corners and associated setae. Epimera 2–3 ventral margin with central seta. Uropod 1 peduncle approximately 2 times length of rami, with one or more robust basofacial seta(e). Uropod 2 smaller than uropod 1; outer ramus shorter than inner ramus. Uropod 3 strongly extended, not sexually dimorphic, distinctly larger than uropod 1, parviramous; outer ramus cylindrical with two articles, second article apically concave; inner ramus short and scale-like. Telson longer than broad, deeply cleft into two lobes, with lateral setae and long apical penicillate setae. Etymology. The name Pilbarana references the Pilbara region of Western Australia where this genus is found. The gender should be considered as female. Remarks. Pilbarana gen. nov. was placed within Eriopisidae by King et al. (2022, labelled ‘ Eriopisidae gen. undet.’) as a reciprocally monophyletic lineage based on COI mtDNA and 28S rRNA molecular data and due to the presence of eriopisid morphological characters: biramous and enlarged third uropod, one or multiple robust basofacial seta(e) on the peduncle of the first uropod, the lack of sternal gills, and the absence of sexually dimorphic second gnathopods (Lowry & Myers 2013). King et al. (2022) further indicated that Pilbarana, together with Nedsia and Norcapensis, the two additional WA subterranean eriopisid genera, are genetically divergent from the morphologically similar Australian melitid genera, Brachina Barnard & Williams, 1995 and Nurina Bradbury & Eberhard, 2000, supporting the current morphological-based classification of Lowry & Myers (2013). Morphologically, Pilbarana is expectedly more similar to Nedsia and Norcapensis than any of the east coast Australian marine and estuarine eriopisid genera: Eriopisella Chevreux, 1920, Netamelita J. L. Barnard, 1962, and Victoriopisa Karaman & Barnard, 1979. It appears to be closest to Norcapensis particularly due to the larger body size compared to Nedsia, a mandible palp of three articles, similarly enlarged second gnathopods, and strongly extended, cylindrical third uropods. Pilbarana, however, can be easily differentiated since Norcapensis: lacks an antennal sinus; comprises an elongate first antenna, reaching past half body length; maxilla 1 inner plate consists of a row of distal plumose setae; possesses a markedly robust rather than vermiform body shape with the first pereonite lacking a distinctly concave or ‘cut out’ posterodistal corner and pereonites 2–7 around 2 times as long as broad; comprises coxal gills on coxae 2–6; first gnathopod with carpus equal in length to propodus; pereopods 5–7 bases progressively more expanded posteriorly; uropod 1 peduncle is approximately equal in length to rami; and uropod 3 outer ramus second article is not apically concave. Pilbarana is, additionally, distinct from Nedsia as Nedsia, like Norcapensis, lacks an antennal sinus and possesses elongated first antennae, but further consists of comparably smaller second gnathopods, and third uropods that are leaf-shaped rather than cylindrical.Published as part of Stringer, Danielle N., King, Rachael A., Austin, Andrew D. & Guzik, Michelle T., 2022, Pilbarana, a new subterranean amphipod genus (Hadzioidea: Eriopisidae) of environmental assessment importance from the Pilbara, Western Australia, pp. 559-573 in Zootaxa 5188 (6) on pages 562-563, DOI: 10.11646/zootaxa.5188.6.4, http://zenodo.org/record/710369
sj-docx-1-eso-10.1177_23969873221143570 – Supplemental material for The EffecTs of Amlodipine and other Blood PREssure Lowering Agents on Microvascular FuncTion in Small Vessel Diseases (TREAT-SVDs) trial: Study protocol for a randomised crossover trial
No full textSupplemental material, sj-docx-1-eso-10.1177_23969873221143570 for The EffecTs of Amlodipine and other Blood PREssure Lowering Agents on Microvascular FuncTion in Small Vessel Diseases (TREAT-SVDs) trial: Study protocol for a randomised crossover trial by Anna Kopczak, Michael S Stringer, Hilde van den Brink, Danielle Kerkhofs, Gordon W Blair, Maud van Dinther, Laurien Onkenhout, Karolina A Wartolowska, Michael J Thrippleton, Marco Duering, Julie Staals, Martin Middeke, Elisabeth André, Bo Norrving, Marie-Germaine Bousser, Ulrich Mansmann, Peter M Rothwell, Fergus N Doubal, Robert van Oostenbrugge, Geert Jan Biessels, Alastair JS Webb, Joanna M Wardlaw and Martin Dichgans in European Stroke Journal</p
Evidence for speciation underground in diving beetles (Dytiscidae) from a subterranean archipelago
No full textMost subterranean animals are assumed to have evolved from surface ancestors following colonisation of a cave system, however very few studies have raised the possibility of 'subterranean speciation' in underground habitats (i.e. obligate cave-dwelling organisms (troglobionts) descended from troglobiotic ancestors). Numerous endemic subterranean diving beetle species from spatially-discrete calcrete aquifers in Western Australia (stygobionts) have evolved independently from surface ancestors; however, several cases of sympatric sister species raises the possibility of subterranean speciation. We tested this hypothesis using vision (phototransduction) genes that are evolving under neutral processes in subterranean species and purifying selection in surface species. Using sequence data from 32 subterranean and five surface species in the genus Paroster (Dytiscidae), we identified deleterious mutations in: long wavelength opsin (lwop), arrestin 1 (arr1), and arrestin 2 (arr2) shared by a sympatric sister-species triplet, arr1 shared by a sympatric sister-species pair, and lwop and arr2 shared among closely related species in adjacent calcrete aquifers. In all cases, a common ancestor possessed the function-altering mutations, implying they were already adapted to aphotic environments. Our study represents one of the first confirmed cases of subterranean speciation in cave insects. The assessment of genes undergoing pseudogenisation provides a novel way of testing modes of speciation and the history of diversification in blind cave animals. This article is protected by copyright. All rights reserved.Barbara L. Langille ... Danielle N. Stringer, Simon M. Tierney, William F. Humphreys, Andrew D. Austin, Steven J. B. Cooper ... et al
Villastrigo (Coleoptera: Dytiscidae), a subterranean diving beetle from the Ngalia Basin in central Australia
No full textThe largest diversity in the world of subterranean diving beetles (Dytiscidae) has been discovered in underground waters of the Australian arid zone. The majority of species are from the Dytiscidae genera Limbodessus Guignot, 1939 (Bidessini) and Paroster Sharp, 1882 (Hydroporini) and are distributed within two major regions: calcrete islands of central Western Australia and the Ngalia Basin of the Northern Territory. Here, we use an integrative approach based on morphological and molecular analyses to describe Ngaliadessus humphreysi gen. et sp. nov. Watts & Villastrigo representing a new genus and species of stygobiotic Bidessini collected from a single well in the Ngalia Basin. Phylogenetic analyses using whole mitochondrial genome, Histone 3 and 18S rRNA data, representing a comprehensive coverage of Bidessini genera, support the distinction of the genus and species as a separate evolutionary lineage sister to the Australasian genus Limbodessus and the widely distributed genus Allodessus Guignot, 1953. Our study further confirms that the Ngalia Basin, containing 13 subterranean dytiscid species from four distinct genera, is one of the most speciose areas within the world's most diverse hotspot of subterranean diving beetles.Christopher H. S. Watts, Adri, an Villastrigo, Barbara L. Langille, Danielle N. Stringer, Tessa M. Bradford, William F. Humphreys, Andrew D. Austin, Michael Balke, Steven J. B. Coope
Molecular phylogenetic analysis of Australian arid-zone oniscidean isopods (Crustacea: Haloniscus) reveals strong regional endemicity and new putative species
No full textDuring the Miocene, central and western Australia shared a warm–wet environment that harboured a mesic rainforest fauna. Now, although the area is within the arid climate zone, it provides a habitat for highly diverse groundwater-associated invertebrates. Periods of global cooling and aridification during the late Miocene resulted in isolated desert refuges that retained ancient lineages. We aimed to characterise oniscidean isopod crustaceans from three refugial locations in the arid zone, and salt lakes, to identify new putative species. Extensive sampling and sequencing of the mitochondrial Cytochrome Oxidase c subunit 1 gene and the 18S rRNA gene were conducted. A molecular phylogenetic analysis of the oniscidean genus Haloniscus showed results consistent with a relictualisation hypothesis of widespread populations from across South Australia to Western Australia with subsequent geographic isolation and diversification of new species within habitats. We observed significant regional endemicity, but some lineages were not regionally monophyletic, pointing to past connectivity. We expand the range of Haloniscus and identify at least 26 putative species from arid-zone locations in Australia, with substantial phylogeographic structure within locations. These findings highlight the importance of relictual groundwater habitats as refugia for a diverse fauna representing early climatic history in Australia’s arid zone.Michelle T. Guzik, Danielle N. Stringer, Nicholas P. Murphy, Steven J.B. Cooper, Stefano Taiti, Rachael A. King, William F. Humphreys and Andrew D. Austi
An Elusive New Genus and Species of Subterranean Amphipod (Hadzioidea: Eriopisidae) from Barrow Island, Western Australia
No full textBarrow Island, off the coast of north-west Western Australia, supports a rich subterranean amphipod fauna amid major resource development. Previous biological surveys for the purpose of species documentation and environmental impact assessment have helped to uncover a once overlooked genus of amphipod from the family Eriopisidae. Here, we describe this new genus and one new species, Aenigmata megabranchia Stringer and King gen. et sp. nov., using a combination of molecular and morphological data, and present a key to Western Australian subterranean eriopisid genera. The new genus represents a distinct, genetically divergent lineage that can be distinguished from all other eriopisid genera by the following characters: the shape and setation of the mouthparts, the enlarged coxal gills, the straight posterior margin of the first coxa, and an almost entirely cleft telson. This research enhances our knowledge of the Australian Eriopisidae, emphasises the importance of Barrow Island as a key location for subterranean amphipod fauna, and will assist in the future recognition of the species for conservation
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