Campylaspis rufus, Gerken, 2012

Gerken, Sarah, 2012, 3524, Zootaxa 3524, pp. 1-124 : 66-72

Campylaspis rufus n.sp.

Figures 37–40

Type material. Holotype ovigerous female, NIWA 80676 , 43.8363°S, 176.7092°E – 43.8330°S, 176.7127°E, 478–479 m, 5 April 2007 . Paratype ovigerous female, dissected, NIWA 80679 , paratype adult male, dissected, NIWA 80680 , paratype adult male, NIWA 80680 , 43.5300°S, 178.5048°E – 43.5363°S, 178.5118°E, 346 m, 24 April 2007 . Paratype ovigerous female, NIWA 80671 , 43.5212°S, 178.6203°W – 43.5228°S, 178.6315°W, 424–425 m, 18 April 2007 .

Other material examined. 1 manca, NIWA 79328 , 44.1262°S, 178.8445°E – 44.1262°S, 178.8445°E, 516 m, 4 April 2007 . 3 juveniles, NIWA 78329 , 43.9790°S, 179.6298°E – 43.9850°S, 179.6218°E, 529–530 m, 9 April 2007 . 1 ovigerous female, 5 juveniles, NIWA 79330 , 43.5212°S, 178.6203°W – 43.5228°S, 178.6315°W, 424–425 m, 18 April 2007 . 1 specimen, NIWA 79331 , 44.1208°S, 174.8432°E – 44.1242°S, 174.8448°E, 512–513 m, 4 April 2007 .

Diagnosis. Females and subadult males. Carapace smooth, without sculpturing; pseudorostrum not dorsally directed, pointed. Carapace, pereonites and pleonites covered in red chromatophores. Pereonites 1–2 free only dorsally, pereonite 1 with weak dorsal lappet. Pereopod 2 dactylus normal, terminal seta long. Uropod peduncles 2.1 times length of pleonite 6. Male. Carapace less vaulted than in female; pseudorostrum blunt. Uropod peduncles 2.9 times length of pleonite 6, more setose than in female.

Description of female.

Holotype ovigerous female, 4.2 mm, NIWA 80676. Paratype ovigerous female, 4.2 mm, NIWA 80679. Carapace smooth, without sculpturing; pseudorostral lobes 0.2 times carapace length; eyelobe 0.03 times carapace length, without lenses. Pereonites 1–2 free only dorsally, pereonite 1 with weak dorsal lappet. Carapace, pereonites and pleonites covered in red chromatophores, preserved organisms appear red ( Figure 37A).

Antennule peduncle article 1 longest, margin lined with fine hair-like setae article 2 0.5 times article 1 length, with complex pedunculate seta; article 3 1.1 times article 2 length, with complex pedunculate seta; main flagellum of 3 articles, with 2 aesthetascs and simple seta; accessory flagellum of 1 article, with 1 simple and 2 pedunculate setae ( Figure 37B).

Mandible truncate, with 4 microserrate setae medially, lacinia mobilis with 1 cusp ( Figure 37C).

Maxillule with 2 endites; outer endite broad, with 6 simple and 4 dentate setae; inner endite with 1 simple, 1 pappose, 1 microserrate and 1 tricuspid setae; palp with 2 microserrate setae ( Figure 37D).

Maxilliped 1 basis with 2 plumose, 1 pappose and 2 hook setae; merocarpus 0.9 times basis length, with 6 simple setae, margins lined with fine hair-like setae dactylus with simple seta ( Figure 37E).

Maxilliped 2 basis 1.1 times length of all other articles together, with 1 simple and 1 pappose setae; ischium 0.09 times basis length, unarmed; merus equal to ischium length, with plumose seta; carpus 2.5 times merus length, with 2 simple setae medially, lateral margin lined withfine hair-like setae propodus 1.1 times carpus length, with simple seta, distal margin produced as long process, lateral margin lined withfine hair-like setae dactylus equal to propodus length, produced as 3 teeth, central tooth short, outer pair unequal ( Figure 37F).

Maxilliped 3 basis 1.2 times length of all other articles together, with 4 plumose setae medially, distal corner with 2 plumose setae, medial corner produced as tooth; ischium 0.04 times basis length, medial margin produced as 2 teeth; merus 7.0 times ischium length, with 4 plumose setae medially, plumose seta laterally, medial margin produced as teeth, lateral margin produced as teeth distally; carpus 0.7 times merus length, with 3 plumose setae medially, plumose seta laterally, lateral margin expanded and produced as teeth; propodus 1.4 times carpus length, with 3 plumose setae medially, plumose seta laterally, margins lined withfine hair-like setae dactylus 0.5 times propodus length, with 2 simple setae terminally; exopod 0.9 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 38A).

Pereopod 1 basis 1.2 times length of all other articles together, with 3 plumose setae, lateral corner produced as tooth; ischium 0.05 times basis length, with plumose seta; merus 5.0 times ischium length, with 3 plumose setae; carpus 0.9 times merus length, with 6 plumose setae; propodus 1.1 times carpus length, with 3 plumose setae; dactylus 0.6 times propodus length, with 3 plumose setae and 1 simple and 1 plumose setae terminally; exopod 0.8 times basis length, basal article with 2 simple setae, flagellum with plumo-annulate setae ( Figure 38B).

Pereopod 2 basis 0.6 times length of all other articles together, with plumose seta; ischium 0.08 times basis length, unarmed; merus 3.7 times ischium length, with 1 simple and 2 plumose setae; carpus 1.8 times merus length, with 6 plumose setae; propodus 0.3 times carpus length, unarmed; dactylus 3.8 times propodus length, with 10 plumose setae and plumose terminally; exopod 1.4 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 38C).

Pereopod 3 basis 1.5 times length of all articles together, with 2 simple and 1 plumose setae; ischium 0.1 times basis length, with 2 plumose setae; merus 1.4 times ischium length, with 2 plumose setae; carpus 1.9 times merus length, with 2 plumose and 1 annulate setae; propodus 0.4 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 2 simple setae terminally ( Figure 38D).

Pereopod 4 basis 1.1 times length of all other articles together, with 3 plumose setae; ischium 0.1 times basis length, with plumose seta; merus 1.8 times ischium length, with 2 plumose setae; carpus 2.4 times merus length, with 2 plumose and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 2 simple setae terminally ( Figure 38E).

Pereopod 5 basis 0.7 times length of all other articles together, with plumose seta; ischium 0.2 times basis length, with plumose seta; merus 1.4 times ischium length, with plumose seta; carpus 2.4 times merus length, with 2 plumose and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 2 simple setae terminally ( Figure 38F).

Uropod peduncles 2.1 times pleonite 6 length, medial margin serrate. Uropod endopod uniarticulate, 0.5 times peduncle length, with 7–8 microserrate with single subterminal setule medially, 1 microserrate with single subterminal setule laterally, terminal seta microserrate with single subterminal setule. Uropod exopod of 2 articles, 0.8 times times length of endopod; article 1 0.4 times article 2 length, unarmed; article 2 with 2 microserrate with single subterminal setule, terminal seta microserrate with single subterminal setule. ( Figure 38G).

Description of male.

Paratype adult male, 5.4 mm, NIWA 80680. Carapace smooth, no sculpturing; pseudorostral lobes 0.2 times carapace length; eyelobe 0.05 times carapace length. Pereonites 1–2 only free dorsally. Carapace, pereonites and pleonites covered in red chromatophores, preserved specimen appears red ( Figures 39A–B).

Antennule peduncle article 1 longest, margin with fine hair-like setae; article 2 0.6 times article 1 length, with 2 complex pedunculate setae; article 3 0.8 times article 2 length, with 2 complex pedunculate setae; main flagellum of 3 articles, with 2 aesthetascs and 3 simple setae; accessory flagellum of 1 article, with 3 simple and 1 complex pedunculate setae ( Figure 39C).

Antenna extending past posterior border of uropod peduncles; peduncle of 5 articles, articles 4–5 with ranks of setae, incompletely circling articles; flagellum with more than 20 articles ( Figure 39D).

Maxilliped 3 basis 1.3 times length of all other articles together, with 4 plumose setae medially, distal corner with 2 plumose setae, margins lined withfine hair-like setae ischium 0.02 times basis length, with medial margin produced as tooth; merus 11.0 times ischium length, with 5 plumose setae medially, 2 plumose setae laterally; carpus 0.8 times merus length, with 5 plumose setae medially, 3 plumose setae laterally, distal corner produced as tooth; propodus 1.4 times carpus length, with 3 plumose setae medially, plumose seta laterally, margins with fine hair-like setae dactylus 0.5 times propodus length, with simple seta terminally; exopod 0.9 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 39E).

Pereopod 1 basis 1.6 times length of all other articles together, with 3 pappose setae; ischium 0.08 times basis length, with pappose seta; merus 2.0 times ischium length, with 7 pappose setae; carpus 0.8 times merus length, with 6 pappose setae; propodus 0.9 times carpus length, with 5 pappose setae; dactylus 1.1 times propodus length, with 2 pappose setae and 3 simple setae terminally; exopod 0.8 times basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Figure 39F).

Pereopod 2 basis 0.9 times length of all other articles together, with 1 simple and 1 pappose setae; ischium 0.05 times basis length, unarmed; merus 3.3 times ischium length, with 2 simple and 1 pappose setae; carpus 2.2 times merus length, with 2 simple, 5 pappose and 1 microserrate setae; propodus 0.2 times carpus length, unarmed; dactylus 4.8 times propodus length, with 10 pappose setae and pappose seta terminally; exopod 1.1 times basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Figure 40A).

Pereopod 3 basis 2.0 times length of all other articles together, with 1 simple and 1 pappose setae; ischium 0.08 times basis length, with 2 pappose setae; merus 1.4 times ischium length, with 2 pappose setae; carpus 2.0 times merus length, with 1 simple, 1 pappose and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.8 times propodus length, with 3 simple setae terminally; exopod 0.9 times basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Figure 40B).

Pereopod 4 basis 1.6 times length of all other articles together, with 1 pappose and 2 complex pedunculate setae, margin with fine hair-like setae ischium 0.08 times basis length, with pappose seta; merus 1.5 times ischium length, with pappose seta; carpus 2.8 times merus length, with 1 simple, 1 plumose and 1 annulate setae; propodus 0.2 times carpus length, with annulate seta; dactylus 0.5 times propodus length, with 3 simple setae terminally; exopod equal to basis length, basal article with plumose seta, flagellum with plumo-annulate setae ( Figure 40C).

Pereopod 5 basis 0.9 times length of all other articles together, with 4 pappose and 2 complex pedunculate setae; ischium 0.1 times basis length, unarmed; merus 1.5 times ischium length, with 3 pappose setae; carpus 2.2 times merus length, with 2 simple and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.8 times propodus length, with 3 simple setae terminally ( Figure 40D).

Uropod peduncles 2.9 times pleonite 6 length, with 5 simple and 10 microserrate setae medially. Uropod endopod uniarticulate, 0.5 times peduncle length, with 11 microserrate setae medially, 1 microserrate seta laterally, terminal seta microserrate. Uropod exopod 0.8 times length of endopod; article 1 0.2 times article 2 length, unarmed; article 2 with 3 simple and 2 microserrate setae, terminal seta microserrate ( Figure 40E).

Etymology. The species is named rufus from the Latin rufus , meaning red, in reference to the red chromatophores covering the entire body, such that the specimens appear red.

Remarks. The most similar species are Campylaspis apheles and Campylaspenis tangaroae . In Campylaspis apheles there are very few to no chromatophores on the body, and the species is smaller than C. rufus . Females of C. tangaroae have a sulcus on the carapace and only 2 setae medially on the uropod endopod, while females of C. rufus have no sulcus on the carapace and at least 7 setae medially on the uropod endopod. Males of C. tangaroae have a pair of large penial lobes ventrally on pereonite 5 and the carapace has a distinct sulcus, while males of C. rufus have no penial lobes and no sulcus.