Globosolembos varanus Myers, 2009, sp. nov.
Creators: name: Myers, Alan A.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Aoridae
Globosolembos
Globosolembos varanus

description: <i>Globosolembos varanus</i> sp. nov. (Figs 37, 38) <b>Type material.</b> Holotype, male, 4.5 mm, AM P71210, Mermaid Cove, Lizard Island (14°38.91’S 145°27.26’E), encrusting algae &amp; rubble, sand with rubble bottom, 2 m, T. Krapp, 28 February 2005 (QLD 1730). Paratype: 1 female, same data as holotype, AM P75466 (QLD 1730). <b>Additional Material examined.</b> 1 female, AM P71211 (QLD 1728). <b>Type Locality.</b> Mermaid Cove, Lizard Island, Queensland, Australia (14°38.91’S 145°27.26’E). <b>Etymology.</b> Named after the goanna (monitor) genus <i>Varanus,</i> which gave Lizard Island (the type locality) its name. <b>Description.</b> Based on holotype, male, 4.5 mm, AM P71210. <b>Head.</b> <i>Head</i> lateral cephalic lobes apically truncate. <i>Antenna 1</i> flagellum with about 15 articles; accessory flagellum multiarticulate. <i>Antenna 2</i> with moderately profuse long setae. <i>Lower lip</i> with fine setae and stout setae. <i>Maxilla 1</i> inner plate with 1 long pectinate apical seta. <i>Mandible</i>, palp article 3 1.5 x length of article 2, posterior margin weakly falcate, posterior margin with setae of more than two distinct lengths. <b>Pereon.</b> <i>Pereonites</i> without sternal spines. <i>Gnathopod 1</i> enlarged in both sexes; coxa weakly produced anterodistally, rounded; basis robust, half or more as broad as long, anterodistal margin with strong flange; ischium anterior margin without flange, posterior margin with few setae; merus not greatly elongated, fused along its entire length with carpus, posterior margin with few setae, without posterodistal spine; carpus two thirds length of propodus, anterior margin without spine; posterior margin without spine; propodus anterior margin strongly setiferous, posterior margin sinuous, palm short, straight, delimited from posterior margin, by a broad, shallow excavation, defined by a robust seta, without spine near base of dactylus; dactylus half length of propodus, overlapping palm. <i>Gnathopod 2</i> subchelate; basis anterodistal margin with flange and distal lobe, posterodistal margin without robust setae; with few setae along length of basis; merus not enlarged or produced away from carpus; carpus and propodus subequal in length, anterior margin not lobate, with long setae; carpus and propodus anterior margins with dense long setae, palm with robust seta defining palm. <i>Pereopod 3</i> without brush of long setae on merus. <i>Pereopod 6</i> basis not produced posterodistally. <i>Pereopod 7</i> less than 125% length of pereopod 6. <b>Pleon.</b> <i>Epimeron 3</i> posterodistal margin rounded. <i>Uropod 1</i> rami subequal, peduncle much longer than broad, distoventral spine less than one fifth length of peduncle. <i>Uropod 2</i> biramous; peduncle with rudimentary distoventral spine, much less than one eighth length of peduncle. <i>Uropod 3</i> biramous, rami distinctly unequal, endopod only a little longer than peduncle. <i>Telson</i> with distal fine setae only. <b>Female</b> (sexually dimorphic characters). Based on paratype female, 4.5 mm, AM P75466. <i>Gnathopod 1</i> carpus a little over one half length of propodus; propodus palm oblique, convex, delimited by acute, triangular spine. <i>Gnathopod 2</i> similar to that of male but less elongate, basis without strong anterodistal flange. <b>Habitat.</b> Coral rubble. <b>Remarks.</b> <i>Globosolembos varanus</i> <b>sp. nov.</b> is similar to <i>G. rodriguensis</i> Myers, 2004 from Rodrigues in the Indian Ocean, but differs in several significant ways. The female gnathopod 1 is quite different, that of <i>G. rodriguensis</i> lacking the strong acute spine on the posterior margin of the propodus of <i>G. varanus</i>. In the male gnathopod 1, the palm of <i>G. varanus</i> is straight and the shallow excavation terminates posteriorly in a weak protrusion. In <i>G. rodriguensis</i>, the male gnathopod 1 palm is weakly concave and the excavation terminated posteriorly in a subacute spine. <i>Globosolembos varanus</i> also resembles <i>G. rimatara</i> Myers, 2005 from the Austral Isles, but the male gnathopod 1 propodus of that species has a much deeper excavation and the carpus and propodus are much less elongate. Uropod 2 of <i>G. rimatara</i> lacks an distoventral spine, and the female gnathopod 1 propodus has a much less oblique palm and is delimited by a small obtuse process. <i>G. lunatus</i> from Victoria is also similar, but differs in the shorter male gnathopod 1 carpus, the weakly flanged basis of the male gnathopod 2, the strong distoventral distoventral spines on uropods 1 and 2, the extensive array of robust setae on the rami uropods 1 and 2 and the absence of a strong acute spine on the posterior margin of the propodus of the female. <b>Distribution.</b> <i>Australia</i>. Queensland: Mermaid Cove, Lizard Island (current study).
description: Published as part of <i>Myers, Alan A., 2009, Aoridae *, pp. 220-278 in Zootaxa 2260 (1)</i> on pages 268-271, DOI: 10.11646/zootaxa.2260.1.9, http://zenodo.org/record/5321091
description: {"references": ["Myers, A. A. (2004) Amphipoda (Crustacea) of the family Aoridae (Corophiidea) from Rodrigues, Indian ocean. Journal of Natural History, 38 (23 / 24), 3123 - 3135.", "Myers, A. A. (2005) Aoridae (Amphipoda: Corophioidea) from the Austral Isles. Records of the Australian Museum, 57, 355 - 360."]}