Campylaspis millsae, Gerken, 2012

Gerken, Sarah, 2012, 3524, Zootaxa 3524, pp. 1-124 : 55-59

Campylaspis millsae n. sp.

Figures 30–33

Type material. Holotype ovigerous female, NIWA 80668 , paratype ovigerous female, dissected, NIWA 80669 , paratype adult male, dissected, NIWA 80670 , 43.9790°S, 179.6298°E – 43.9850°S, 179.6218°E, 529–530 m, 9 April 2007.

Other material examined. 1 ovigerous female, 8 subadult females, 1 adult male, 1 subadult male, 6 mancae, NIWA 79332 , 43.9790°S, 179.6298°E – 43.9850°S, 179.6218°E, 529–530 m, 9 April 2007 . 5 ovigerous females, 3 subadult females, 1 subadult male, 16 juveniles, NIWA 79333 , 43.5212°S, 178.6203°W – 43.5228°S, 178.6315°W, 424–425 m, 18 April 2007 . 3 subadult females, 2 subadult males, NIWA 79334 , 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007 . 1 ovigerous female, 7 subadult females, 3 subadult males, NIWA 79335 , 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007 . 1 subadult female, NIWA 79336 , 40.8800°S, 170.8555°E – 40.8883°S, 170.8565°E, 529–534 m, 6 June 2007 .

Diagnosis. Females and subadult males. Carapace with sulcus, not bounded by carinae, with scattered spines and tubercles, with pair of large tubercles at lateral corners of frontal lobe, with 3 parallel rounded carinae, ventral one most complete and meeting at midline posteriorly and turning anterior, carinae with several large teeth, large teeth and setae scattered on carapace, with 1–3 teeth on anterior margin of carapace; pseudorostrum weakly or not dorsally directed. Carapace, pereonites and pleonites with scattered red chromatophores. Pereonites 1–5 free, pereonites 1–2 with strong dorsal lappet in female. Pereopod 2 dactylus normal, terminal seta long. Uropod peduncles at least 2.8 times length of pleonite 6. Male. Carapace ornamentation less pronounced, less vaulted than in female. Uropods more setose than in female.

Description of female.

Holotype ovigerous female, 3.3 mm, NIWA 80668. Paratype ovigerous female, 2.9 mm, NIWA 80669. Carapace with sulcus, not bounded by carinae, with scattered spines and tubercles, with pair of large tubercles at lateral corners of frontal lobe, with 3 parallel rounded carinae, ventral one most complete and meeting at midline posteriorly and turning anterior, carinae with several large teeth, large teeth and setae scattered on carapace, with 1–3 teeth on anterior margin of carapace; pseudorostrum weakly or not dorsally directed; pseudorostral lobes 0.3 times carapace length; eyelobe 0.04 times carapace length. Carapace, pereonites and pleonites with scattered red chromatophores. Pereonites 1–5 free, pereonites 1–2 with strong dorsal lappet, pereonites 4–5 with spines dorsally ( Figures 30A–B).

Antennule peduncle article 1 longest, with 2 simple and 1 complex pedunculate setae; article 2 0.8 times article 1 length, with 2 simple and 2 complex pedunculate setae; article 3 equal to article 2 length, with 1 simple and 1 complex pedunculate setae; main flagellum of 4 articles, with 2 aesthetascs and 4 simple setae; accessory flagellum of 1 article, with 2 simple and 2 pedunculate setae ( Figure 30C).

Mandible truncate, with 3–7 microserrate setae medially, lacinia mobilis with 1 cusp ( Figure 30D).

Maxillule with 2 endites; outer endite broad, with 8 simple setae; inner endite with 2 simple, 2 microserrate and 1 tricuspic setae; palp with 2 microserrate setae ( Figure 30E).

Maxilla reduced to single endite, with 6 simple and 1 pappose setae ( Figure 30F).

Maxilliped 1 basis with 2 simple and 2 hook setae; merocarpus equal to basis length, with 7 simple setae, lateral margin lined with fine hair-like setae ( Figure 30G).

Maxilliped 2 basis 0.5 times length of all other articles together, with plumose seta; ischium absent; merus 0.5 times basis length, with plumose seta; carpus 0.7 times merus length, with 1 simple and 1 plumose setae, medial margin produced as tooth; propodus 1.7 times carpus length, distal margin produced as single long process; dactylus 0.8 times propodus length, produced as 3 teeth, central tooth short, outer pair subequal in length ( Figure 30H).

Maxilliped 3 basis 0.7 times length of all other articles together, with 3 plumose setae medially, distal corner with 2 plumose setae, medial margin produced as large teeth distally; ischium 0.04 times basis length, with plumose seta, medial margin produced as tooth; merus 12 times ischium length, with 3 simple and 1 plumose setae medially, plumose seta laterally, medial margin produced as 3 teeth, lateral margin produced as single strong tooth distally; carpus 0.4 times merus length, with 2 simple and 2 plumose setae medially, plumose seta laterally, lateral margin produced as strong teeth; propodus 1.4 times carpus length, with 2 plumose setae medially, plumose seta laterally; dactylus 0.7 times propodus length, with 3 simple setae terminally; exopod 0.9 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 30I).

Pereopod 1 basis 0.6 times length of all other articles together, with 4 simple, 1 plumose and 1 pappose setae, margins weakly serrate; ischium 0.09 times basis length, with plumose seta; merus 5.2 times ischium length, with 8 simple, 3 plumose and 1 pappose setae; carpus 0.7 times merus length, with 2 plumose setae, lateral margin serrate; propodus equal to carpus length, with 6 simple and 1 plumose setae; dactylus 0.6 times propodus length, with simple seta and 7 simple setae terminally; exopod 1.1 times basis length, basal article with 2 simple setae, flagellum with plumo-annulate setae ( Figure 31A).

Pereopod 2 basis 0.5 times length of all other articles together, with 2 simple and 1 plumose setae, margins lined with fine hair-like setae; ischium 0.04 times basis length, unarmed; merus 7.5 times ischium length, with 1 simple and 2 plumose setae; carpus 1.9 times merus length, with 3 simple, 1 plumose and 1 simple with single subterminal setule setae; propodus 0.3 times carpus length, with simple seta; dactylus 4.3 times propodus length, with 6 simple and 2 plumose setae, 5 plumose setae terminally; exopod 1.3 times basis length, basal article with simple seta, flagellum with plumo-annulate setae ( Figure 31B).

Pereopod 3 basis 1.4 times length of all other articles together, with 4 simple, 3 plumose and 1 complex pedunculate setae; ischium 0.09 times basis length, with plumo-annulate seta; merus 1.5 times ischium length, with plumo-annulate seta; carpus 2.2 times merus length, with 1 simple and 1 annulate setae; propodus 0.3 times carpus length, with 1 annulate and 1 complex pedunculate setae; dactylus equal to propodus length, with 2 simple and 1 microserrate setae terminally ( Figure 31C).

Pereopod 4 basis with 4 simple and 2 complex pedunculate setae; ischium with plumose seta; merus 2.5 times ischium length, with 1 simple and 1 plumose setae; carpus 2.1 times merus length, with 1 simple, 1 plumose and 1 annulate setae; propodus 0.3 times carpus length, with 1 annulate and 1 complex pedunculate setae; dactylus 0.7 times propodus length, with 2 simple and 1 microserrate setae terminally ( Figure 31D).

Pereopod 5 basis 0.7 times length of all other articles together, with 2 simple and 2 complex pedunculate setae; ischium 0.1 times basis length, with plumose seta; merus 2.7 times ischium length, with 1 simple and 1 plumose setae; carpus 2.4 times merus length, with 1 plumose and 1 annulate setae; propodus 0.4 times carpus length, with 1 annulate and 1 complex pedunculate setae; dactylus 0.6 times propodus length, with 2 simple and 1 microserrate setae terminally ( Figure 31E).

Uropod peduncles 3 times pleonite 6 length, with 8 simple setae. Uropod endopod uniarticulate, 0.5 times peduncle length, with 3 microserrate with subterminal setule setae medially, 1 pedunculate and 1 microserrate with subterminal setule setae laterally, terminal seta microserrate with subterminal setule, medial margin serrate. Uropod exopod of 2 articles, equal to length of endopod; article 1 0.1 times article 2 length,with simple seta; article 2 with 3 simple setae, terminal seta simple ( Figure 31F).

Description of male.

Paratype adult male, 3.5 mm, NIWA 80670. Carapace elongate, with similar sculpturing as in female but less well developed, with few spines and tubercles scattered on carapace, pair of large tubercles at corners of frontal lobe, anterior margin with 3 large teeth; pseudorostral lobes very weakly dorsally tilted, 0.3 times carapace length; eyelobe 0.03 times carapace length, without lenses. Pereonite 1 covering posterior edge of carapace dorsally, pereonites 1–5 with dorsal spines ( Figure 32A).

Antennule peduncle article 1 longest, with 3 simple setae and fine hair-like setae on margins; article 2 0.8 times article 1 length, with 3 simple and 2 complex pedunculate setae; article 3 0.9 times article 2 length, with complex pedunculate seta; main flagellum of 3 articles, with 2 aesthetascs, 3 simple and 1 complex pedunculate setae; accessory flagellum of 1 article, with 3 simple and 2 complex pedunculate setae ( Figure 32B).

Antenna extending to at least middle of uropod peduncles; peduncle of 4 articles; articles 4–5 with ranks of setae, incompletely circling articles; flagellum with 2–3 setae on each article ( Figure 32C).

Maxilliped 3 basis 0.9 times length of all other articles together, with 1 simple and 1 plumose setae on medial margin, distal corner with 2 plumose setae, medial margin lined with fine hair-like setae, produced as tooth distally; ischium 0.1 times basis length, produced as tooth medially; merus 3.0 times ischium length, with 4 simple setae medially, plumose seta laterally, both margins produced as teeth; carpus 0.7 times merus length, with 1 simple and 2 plumose setae medially, plumose seta laterally, lateral margin produced as teeth; propodus 1.2 times carpus length, with 2 plumose setae medially; dactylus 0.6 times propodus length, with 4 simple setae terminally; exopod 1.1 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 32D).

Pereopod 1 basis 0.9 times length of all other articles together, with 1 simple and 3 pappose setae; ischium 0.06 times basis length, with pappose seta; merus 5.7 times ischium length, with 11 simple setae; carpus 0.8 times merus length, with 7 simple and 3 plumose setae; propodus 0.8 times carpus length, with 5 simple and 2 plumose setae, lateral margin lined with fine hair-like setae; dactylus 0.7 times propodus length, with 4 simple setae and 7 simple setae terminally; exopod 1.1 times basis length, margins serrate, basal article with 2 simple setae, flagellum with plumo-annulate setae ( Figure 32E).

Pereopod 2 basis shorter than all other articles together, with 2 simple and 1 plumose setae; ischium 0.05 times basis length, unarmed; merus 4.5 times ischium length, with 1 simple and 2 plumose setae; carpus 2.2 times merus length, with 3 simple, 3 plumose and 1 microserrate setae; propodus 0.3 times carpus length, with simple seta; dactylus with simple setae, broken; exopod 1.2 times basis length, basal article with strongly serrate margin proximally, with 2 simple setae, flagellum with plumo-annulate setae ( Figure 32F).

Pereopod 3 basis 1.8 times length of all other articles together, with 4 simple and 2 pappose setae, margin with fine hair-like setae proximally; ischium 0.06 times basis length, with 1 simple and 1 plumose setae; merus 2.7 times ischium length, with 1 simple and 1 plumose setae; carpus 1.4 times merus length, with 2 simple and 1 annulate setae; propodus 0.4 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 1 simple and 1 plumose setae, flagellum with plumoannulate setae ( Figure 32G).

Pereopod 4 basis 1.4 times length of all other articles together, with 3 simple, 2 pedunculate, and 2 complex pedunculate setae; ischium 0.06 times basis length, with 1 simple and 1 plumose setae; merus 2.7 times ischium length, with 1 simple and 1 plumose setae; carpus 2.3 times merus length, with 2 simple and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 2 simple and 1 microserrate setae terminally; exopod equal to basis length, basal article with 1 simple and 1 plumose setae, flagellum with plumo-annulate setae ( Figure 33A).

Pereopod 5 basis 0.9 times length of all other articles together, with 1 simple, 2 plumose and 1 pedunculate setae; ischium 0.1 times basis length, with plumo-annulate seta; merus 1.5 times ischium length, with 1 simple and 1 plumo-annulate setae; carpus 3.0 times merus length, with 2 simple and 1 annulate setae; propodus 0.2 times carpus length, with 1 annulate and 1 complex pedunculate setae; dactylus equal to propodus length, with 2 simple setae terminally ( Figure 33B).

Uropod peduncles 2.8 times pleonite 6 length, with 10 microserrate setae medially, 4 simple setae laterally, lateral margins serrate proximally. Uropod endopod uniarticulate, 0.5 times peduncle length, with 10 microserrate with subterminal setule setae medially, 6 pedunculate, 2 complex pedunculate, and 1 microserrate with subterminal setule setae laterally, terminal seta microserrate with subterminal setule. Uropod exopod 0.8 times length of endopod; article 1 0.3 times article 2 length, unarmed; article 2 with 4 microserrate with subterminal setule setae, terminal seta microserrate with subterminal setule ( Figure 33C).

Etymology. The species is named in honor of Sadie Mills, in recognition of her work in the NIWA collections and her unfailingly helpful and pleasant nature.

Remarks. The most similar species is Campylaspis sculptaspinosa , which lacks an eyelobe in the female, and has no teeth at the anteroventral corner of the carapace in both sexes. In comparison, C. millsae has an eyelobe in the female, and a distinct tooth in the female and several teeth in the male at the anteroventral corner of the carapace.