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

description: <i>Grandidierella rhizophorae</i> sp. nov. (Figs 41, 42, Pl. 2D) <b>Type Material.</b> Holotype, male, 3.5 mm, AM P70562, Mangrove Beach, Lizard Island (14°40.78’S 145°27.76’E), mangrove detritus, <i>Rhizophora stylosa</i> in lagoon, 0.5 m, T. Krapp-Schickel, 23 February 2005 (QLD 1624). Paratypes. 5 females, AM P70583 (QLD 1629); 1 male, 1 female, AM P70584 (QLD 1631). <b>Type Locality.</b> Mangrove Beach, Lizard Island, Queensland, Australia (14°40.78’S 145°27.76’E). <b>Etymology.</b> Named after the mangrove <i>Rhizophora,</i> in which the type material was collected. <b>Description.</b> Based on holotype, male 3.5 mm, AM P70562. <b>Head.</b> <i>Head</i> lateral cephalic lobes apically truncated. <i>Antenna 1</i> flagellum with about 15 articles; accessory flagellum absent or vestigial. <i>Antenna 2</i> with few long setae. <i>Lower lip</i> with fine setae only. <i>Maxilla 1</i> inner plate without setae. <i>Mandible</i>, palp article 3 longer than 2, posterior margin substraight, with distal setae. <b>Pereon.</b> <i>Pereonites</i> without sternal spines. <i>Gnathopod 1</i> enlarged in males only; coxa anterodistally rounded; basis robust, half or more as broad as long, with few or no setae present along margin, with setae sparse or absent, anterodistal margin with flange weak or absent; ischium anterior margin without flange; merus not greatly elongated, fused along its entire length with carpus, posterior margin with sparse setae or setae absent, without posterodistal spine; carpus one and one third to one and one half length of propodus, with setae sparse or absent, with one spine; propodus anterior margin moderately clothed in short setae, palm evenly continuous with posterior margin, margin entire, palm corner undefined; dactylus more than half length of propodus, significantly overlapping palm. <i>Gnathopod 2</i> basis anterior margin sub-straight, weakly setiferous, anterodistal margin without spine, posterodistal margin without robust setae; carpus longer than propodus, with long or short moderately spaced setae; propodus with long sparse setae. <i>Pereopod 3</i> basis anterior margin unexpanded, straight or weakly concave. <i>Pereopod 7</i> significantly less than 125% length of pereopod 6. <b>Pleon.</b> <i>Epimeron 3</i> posterodistal margin rounded. <i>Uropod 1</i> distoventral spine shorter than peduncle. <i>Uropod 2</i> peduncle without distoventral spine or with vestigial spine. <i>Uropod 3</i> uniramous, inner ramus at least twice length of peduncle. <b>Female</b> (sexually dimorphic characters). Based on paratype, female 4.5 mm, AM P70583. <i>Gnathopod 1</i> basis slender, much less than half as broad as long; carpus subequal in length with propodus; palm defined by strong posterodistal spine. <b>Habitat.</b> Mangrove litter. <b>Remarks.</b> Differs from <i>G. bonnieroides</i> by lacking a submarginal spine on the posterior margin of the carpus of the male gnathopod 1. <b>Distribution.</b> <i>Australia</i>. Queensland: Mangrove Beach, 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 274-276, DOI: 10.11646/zootaxa.2260.1.9, http://zenodo.org/record/5321091