Jigurru vailhoggett Guerra-Garcia 2006
Creators: name: Guerra-García, José M.
name: Lowry, J. K.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Caprellidae
Jigurru
Jigurru vailhoggett

description: <i>Jigurru vailhoggett</i> Guerra-García, 2006 (Fig. 11) <i>Jigurru vailhoggett</i> Guerra-García, 2006: 426, figs 13–17. <b>Material examined.</b> Holotype male, 3.1 mm, AM P61744 (QLD 1475). Paratypes: 2 males, 1 female, AM P61745 (QLD 1475). <b>Type locality.</b> Coconut Beach, Lizard Island, Queensland, Australia (14º40’S 145º28’E), dead thick branching hard coral encrusted with calcareous red algae and filamentous algal turf, 8 m depth (QLD 1475). <b>Description.</b> Based on holotype male, 3.1 mm and paratype female, 2.2 mm. <b>Head</b> and pereonites slender. <i>Head/pereonite 1</i> fused (suture absent), dorsal margin convex; eye large, distinctive. <i>Antenna 1</i> well developed; slender, 0.33 x body length; peduncle article 2 longest (slightly longer than article 3), article 3 straight; accessory flagellum absent; flagellum 0.66 x peduncular length, with more than 2 articles, proximal article composed of 3 articles. <i>Antenna 2</i> 0.4 x antenna 1 length, slender; peduncle with several feeble setae; flagellum 0.4 x peduncular length, with 2 articles. <i>Labrum</i> weakly notched, forming rounded quadrilateral projections. <i>Mandible</i> right incisor with 5 teeth, right lacinia mobilis with 2 large teeth, follow by 2 plates, accessory setal row with 4 setae; molar absent; left incisor with 5 teeth, lacinia mobilis with 5 teeth, with 5–6 trapezoid plates decreasing in size; palp 3–articulate, palp setal formula 1-x-1. <i>Maxilla 1</i> outer plate with 6 stout apical setal-teeth. <i>Maxilliped</i> inner plate subequal to outer plate; round (inner plates almost fused); subequal to inner plate; palp article 2 setose on inner margin (with about 6 setae on inner margin); palp article 4 not enlarged, falcate. <b>Pereon</b>. <i>Pereonites 2 to 7</i> not fused; pereonite 5 longest. Pereonite 1 without projections. <i>Gnathopod 1</i> distinctly smaller than gnathopod 2; propodus triangular, palm begins about 1/3 to 2/5 along posterior margin, smooth, without large, rounded knob proximally; dactylus curved, inner margin smooth. <i>Pereonite 2</i> without projections. <i>Gnathopod 2</i> situated toward anterior end of pereonite 2; basis about 1.5 x length of, or subequal in length to pereonite 2, without anterodistal projection; ischium without anterodistal projection; propodus subovate, large, anterodistal margin convex, without anterodistal triangular projection, without projections along mid-anterior margin; palm without proximal cavity filled with membranous sack, proximal projection with 3 robust (grasping) setae, margin convex, smooth, without hook-like projection at base of dactylus, without distal shelf, sinus or midpalmar projection. <i>Pereonite 3</i> without projections. <i>Pereopod 3</i> absent. <i>Pereonite 4</i> without projections. <i>Pereopod 4</i> absent. <i>Pereopod 5</i> reduced or vestigial, with 3 articles or with 4 articles (3 articles, but basal article almost divided into 2 articles), slender. <i>Pereopods 6 and 7</i> simple. <i>Pereopod 6</i> basis and propodus subequal in length. <i>Pereopod 7</i> similar to pereopod 6. <i>Gills</i> on pereonites 2 to 4. <i>Pereonite 3 gill</i> length about 1/3 of corresponding pereonite, straight, ovate. <i>Pereonite 4 gill</i> length about 1/4 of corresponding pereonite, straight, ovate. <b>Pleon</b>. <i>Uropod 1</i> present; peduncle fused to pleon; ramus length about 6–8 x width. <i>Uropod 2</i> ramus well developed. <b>Female</b> (sexually dimorphic characters). <i>Oostegites</i> scarcely setose. <i>Gnathopod 2</i> similar to male, but with dactylus slightly more elongate. <b>Remarks.</b> <i>Jigurru vailhoggett</i> differs from other caprellids on the GBR in having pereopod 3 and 4 absent, pereopod 5 reduced to four articles and gills on pereonites 2 to 4. <b>Distribution</b>. <i>Australia</i>. Queensland: Coconut Beach, Lizard Island (Guerra-García 2006).
description: Published as part of <i>Guerra-García, José M. &amp; Lowry, J. K., 2009, Caprellidae *, pp. 290-327 in Zootaxa 2260 (1)</i> on pages 311-313, DOI: 10.11646/zootaxa.2260.1.12, http://zenodo.org/record/5320964