Paragrubia edgari Peart 2009, sp. nov.
Creators: name: Hughes, L. E.
name: Lowry, J. K.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ampithoidae
Paragrubia
Paragrubia edgari

description: <i>Paragrubia edgari</i> Peart sp. nov. (Figs 33, 34) <b>Type material</b>. Holotype, female, ovigerous, 10.0 mm, AM P51258, Cape Cleveland, Queensland, Australia (19°11’S 147°01’E), on <i>Sargassum</i> sp., 1 m, G. Edgar, 24 August 1996 (CA 12). Paratypes: male, 11.0 mm, AM P51259 (CA 12); juvenile, 4 mm, AM P51260 (CA 12). <b>Additional material examined.</b> 1 dissected male, 4 slides, AM P76984 (JDT /LIZ 15h); 8 unsexed, AM P76985 (SEL /LZI-4-2). <b>Type locality</b>. Cape Cleveland, Queensland, Australia (19°11’S 147°01’E), on <i>Sargassum</i> sp., 1 m. <b>Etymology</b>. This species is named for the collector, Graham Edgar. <b>Description.</b> Based on holotype, female, 10.0 mm, AM P51258. <b>Head.</b> <i>Head</i> longer than deep. <i>Antenna 1</i> longer than antenna 2; peduncular article 1 longer than article 2; flagellum 49 articles; accessory flagellum with 5 articles. <i>Antenna 2</i> peduncle not densely setose on ventral margin; article 4 longer than article 5; flagellum 24 articles. <i>Upper lip</i> lateral margins each with midlateral notch. <i>Mandible</i> molar well developed, triturating, accessory setal row with 5 serrate setae; palp 3–articulate, apically setose; article 1 shorter than article 2; article 2 subequal in length to article 3. <i>Lower lip</i> outer plates entire, lateral lobe distinctly longer than medial lobe; mandibular lobe with curved margins, apically subacute. <i>Maxilla 1</i> inner plate with 1 seta; palp article 2 slender. <i>Maxilla 2</i> inner plate narrower than outer plate. <i>Maxilliped</i> outer plate with row of small robust setae along medial margin. <b>Pereon.</b> <i>Coxae 1–4</i> deeper than broad. <i>Gnathopod 1</i> subequal in size to gnathopod 2; coxa subequal to coxa 2, anteroventrally produced, anterior margin slightly concave, anteroventral corner subacute, with a tuft of slender setae in the posteroventral corner; basis subequal in length to coxa, anterodistal lobe large, rounded, anterodistal corner without setae; merus posterodistal lobe subacute; posterior margin convex; carpus subequal in length to propodus, anterior margin without setae; propodus narrow, subovoid; palm acute, slightly convex, posterodistal corner rounded, with 1 robust seta defining palm; dactylus subequal in length to palm, tapering evenly, inner margin crenate. <i>Gnathopod 2</i> with long, simple setae on margins; coxa with a tuft of slender setae in the posteroventral corner; basis with sparse slender setae, basis anterodistal lobe absent, anterodistal corner without setae; merus margin with subacute anterodistal lobe; carpus subequal to propodus, subtriangular; propodus narrow, greater than 1.5 x as long as broad, subovoid; palm acute, entire, with posterodistal corner, rounded, with 1 robust seta defining palm; dactylus subequal in length to palm, tapering evenly, apically acute, inner margin crenate. <i>Pereopods 3–4</i> basis narrow; merus subequal in length to carpus. <i>Pereopods 5–7</i> simple. <i>Pereopod 5</i> basis with medial slender setae; propodus not expanded distally, with 3 anterodistal striated robust seta; dactylus slightly curved. <i>Pereopod 6</i> basis posterior margin straight, with several marginal slender setae; propodus not expanded distally, with 3 anterodistal striated robust setae; dactylus slightly curved. <i>Pereopod 7</i> similar to pereopod 6. <b>Pleon.</b> <i>Epimera 2–3</i> posteroventral corner broadly rounded, or narrowly rounded. <i>Uropod 1</i> peduncle with 5 robust setae, without slender setal fringe, with large, acute distoventral spine; outer ramus with 6 lateral robust setae; inner ramus with 6 lateral robust setae. <i>Uropod 2</i> peduncle with 3 robust setae; outer ramus with 5 lateral robust setae; inner ramus with 6 lateral robust setae. <i>Uropod 3</i> peduncle longer than broad, less than 2 x length of rami, without marginal slender setae, with 4 distal peduncular robust setae, without distal slender setae; outer ramus with 1 weakly curved distal robust setae, with 2 lateral robust setae and 8 lateral slender setae; inner ramus with 3 distal slender setae, with 1 lateral robust seta. <i>Telson</i> subtrapezoidal, apically rounded, with small apical cusp on each distolateral corner, with 5 pair of oblique medial slender setae and 2 pair of lateral slender setae. <b>Male</b> (sexually dimorphic characters). Based on paratype, male, 11.0 mm, AM P51259. <i>Antenna 1</i> primary flagellum 64 articles. <i>Antenna 2</i> flagellum 30 articles. <i>Gnathopod 1</i> larger and stouter than gnathopod 2; basis longer than coxa, anterodistal corner with 1 slender seta; carpus shorter than propodus, anterior margin with slender setae; propodus broad, subrectangular; palm excavate, posterodistal corner subquadrate. <i>Gnathopod 2</i>; anterodistal lobe large, rounded, reaching beyond ischium, anterodistal corner with 2 slender setae. <b>Habitat.</b> Brown alga, <i>Sargassum sp.</i> <b>Remarks.</b> <i>Paragrubia edgari</i> <b>sp. nov.</b> is most similar to <i>P. latipoda</i> Ren, 2001 and <i>P. vorax</i> Chevreux, 1901. In <i>P. edgari</i> the male gnathopod 1 propodus is subrectangular with a medially excavate palm, while in <i>P. latipoda</i> and <i>P. vorax</i> the propodus is subovoid with a convex palm. <b>Distribution.</b> <i>Australia</i>. Queensland: Lizard Island (current study); Cape Cleveland (current study).
description: Published as part of <i>Hughes, L. E. &amp; Lowry, J. K., 2009, Ampithoidae *, pp. 153-219 in Zootaxa 2260 (1)</i> on pages 207-208, DOI: 10.11646/zootaxa.2260.1.8, http://zenodo.org/record/5322208
description: {"references": ["Ren, X. (2001) Gammaridean shrimps of the family Ampithoidae (Crustacea: Amphipoda) from Hainan Island, South China Sea. National Science Museum Monographs, 21, 65 - 74.", "Chevreux, E. (1901) Mission scientifique de M. Ch. Alluaud aux Iles Sechelles (Mars, Avril, Mai 1892). Crustaces amphipodes. Memoires de la Societe de France, 14, 388 - 438."]}