Pseudoprellicana johnsoni Guerra-García, 2006

Guerra-García, José M. & Lowry, J. K., 2009, Caprellidae *, Zootaxa 2260 (1), pp. 290-327 : 317-319

Pseudoprellicana johnsoni Guerra-García, 2006

( Fig. 14 )

Pseudoprellicana johnsoni Guerra-García, 2006: 434 , figs 29–32.

Material examined. Holotype male, 2.8 mm, AM P61737 ( QLD 27 ) . Paratype: 1 female, AM P61738 ( QLD 29 ) .

Type locality. Between Bird Islet & South Island , Lizard Island, Queensland, Australia (14º40’S 145ºE), sediment at reef base with mixed algae, 25 m depth ( QLD 27 ) .

Description. Based on holotype male, 2.8 mm and paratype female, 2.7 mm.

Head and pereonites slender. Head/pereonite 1 fused (suture absent); slightly concave along dorsal margin or dorsal margin straight; eye large, distinctive. Antenna 1 well developed; slender, 0.33 x body length; peduncle articles 2 and 3 subequal in length, article 3 straight; accessory flagellum absent; flagellum 0.4 x peduncular length, with more than 2 articles. Antenna 2 0.5 x antenna 1 length, slender; peduncle without setae; flagellum about 1/4 (0.25 x) of peduncular length, with 2 articles. Labrum weakly notched, forming rounded quadrilateral projections. Mandible right incisor with 5 teeth, right lacinia mobilis coarsely toothed followed by 2 plates; accessory setal row with 5 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 with 1 to 4 large distal setae. Maxilla 1 outer plate with 6 stout apical setal-teeth. Maxilliped inner plate larger than outer plate, subrectangular; outer plate 1/2 (0.5 x) length of inner plate; palp article 2 scarcely setose on inner margin; palp article 4 not enlarged, weakly falcate.

Pereon. Pereonites 2 to 7 not fused; pereonite 5 longest. Pereonite 1 without projections. Gnathopod 1 distinctly smaller than gnathopod 2; propodus subtriangular, palm begins 2/5 along posterior margin, smooth, without large, rounded knob proximally; dactylus curved, inner margin smooth. Pereonite 2 without projections. Gnathopod 2 situated toward anterior end or near middle of pereonite 2; basis subequal in length to pereonite 2, without anterodistal projection; ischium without anterodistal projection; propodus subovate or elongate, large, anterodistal margin slightly convex, without anterodistal triangular projection, without projections along mid-anterior margin; palm without proximal cavity filled with membranous sack, palm proximal projection with 3 robust (grasping) setae, palm margin convex, smooth, without hook-like projection at base of dactylus, without distal shelf, without sinus, without midpalmar projection. Pereonite 3 without projections. Pereopod 3 absent. Pereonite 4 without projections. Pereopod 4 absent. Pereopod 5 reduced or vestigial, with 3 articles, slender. Pereopods 6 and 7 simple.

Gills on pereonites 3 and 4. Pereonite 3 gill length less than 1/4 of corresponding pereonite, straight, ovate. Pereonite 4 gill length about 1/6 of corresponding pereonite, straight, ovate.

Pleon. Uropod 1 present. Uropod 2 ramus well developed.

Female (sexually dimorphic characters). Head/pereonite 1 dorsal margin straight. Antenna 2 0.6 x antenna 1 length. Gnathopod 2 situated near anterior end of pereonite 2. Pereopods 6 and 7 present. Pereopod 6 basis and propodus subequal in length; propodus without trapezoid comb on distal part of palm; dactylus curved, dactylus not setose. Pereopod 7 similar to pereopod 6; merus shorter than basis; dactylus with plumose seta distally.

Habitat. Sediment at reef base with mixed algae, 25 m depth.

Remarks. The genus Pseudoprotella was established by Guerra-García (2006). The closest genera are Prellicana and Jigurru (see details in Guerra-García 2006)

Distribution. Australia: Queensland: between Bird Islet and South Island, Lizard Island (Guerra-García 2006).

Figures

FIGURE 14. Pseudoprellicana johnsoni Guerra-García, 2006. A, Holotype male, 2.8 mm, AM P61737, B, paratype female, 2.7 mm, AM P61738, between Bird Islet & South Island, Lizard Island, Great Barrier Reef. Refigured from Guerra-García (2006).