Campylaspis zimmeri, Gerken, 2012

Gerken, Sarah, 2012, 3524, Zootaxa 3524, pp. 1-124 : 89-92

Campylaspis zimmeri n. sp.

Figures 51–52

Type material. Holotype subadult female, NIWA 80660 , paratype subadult female, dissected, NIWA 80661 , paratypes, 2 subadult females, 1 manca, NIWA 80662 , 44.4862°S, 177.1413°E – 44.4841°S, 177.1416°E, 1235–1239 m, 6 April 2007.

Other material examined. 6 juveniles, 12 mancae, NIWA 79391 , 44.4862°S, 177.1413°E – 44.4841°S, 177.1416°E, 1235–1239 m, 6 April 2007 . 1 subadult male, 1 manca, NIWA 46215 , 40.8800°S, 170.8555°E – 40.8883°S, 170.8565°E, 529–534 m, 6 June 2007 . 1 specimen, NIWA 79392 , 43.0650°S, 174.9325°W – 43.0732°S, 174.9348°W, 933–940 m, 13 April 2007 .

Diagnosis. Females and subadult males. Carapace without sulcus, covered with large tubercles; pseudorostrum not dorsally directed. Carapace, pereonites and pleonites covered with red chromatophores. Pereonite 1 free only dorsally. Pereopod 2 dactylus normal, terminal seta long. Uropod peduncles 1.6 times length of pleonite 6. Male. Adult unknown.

Description of female.

Holotype subadult female, 5.0 mm, NIWA 80660 . Paratype subadult female, 4.0 mm, NIWA 80661 . Carapace without sulcus, covered in large tubercles; pseudorostral lobes not dorsally directed, 0.2 times carapace length; eyelobe 0.05 times carapace length, without lenses. Pereonite 1 free only dorsally. Carapace, pereonites and pleonites covered in red chromatophores, specimens appear red ( Figures 51A–B) .

Antennule peduncle article 1 longest, with simple seta; article 2 0.8 times article 1 length, with 1 simple and 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, 1 simple and 1 complex pedunculate setae; accessory flagellum of 1 article, with complex pedunculate seta ( Figure 51C).

Mandible truncate, with 4–5 microserrate setae medially, lacinia mobilis with 4 cusps ( Figure 51D).

Maxillule with 2 endites; outer endite broad, with 5 simple and 5 dentate setae terminally, with simple seta on margin; inner endite with 2 simple, 1 pappose, 1 microserrate and 1 bicuspid setae; palp broken ( Figure 51E).

Maxilliped 1 basis unarmed; merocarpus 1.6 times basis length, with 7 simple setae, lateral margin lined with fine hair-like setae; dactylus 0.32 times merocarpus length, broad at base, narrowing distally, with simple seta, lateral margins lined with fine hair-like setae ( Figure 51F).

Maxilliped 2 basis equal to all other articles together, with plumose seta, lateral margin lined with fine hair-like setae; ischium absent; merus 0.3 times basis length, lateral margin lined with fine hair-like setae; carpus 0.8 times merus length, with 3 plumose setae, lateral margin lined with fine hair-like setae; propodus 0.7 times carpus length, with 2 simple setae, distal margin produced as long process; dactylus 1.8 times propodus length, terminal margin produced as 3 teeth, central tooth short ( Figure 51G).

Maxilliped 3 basis 1.1 times length of all other articles together, with plumose seta at distal corner, medial margin lined with fine hair-like setae; ischium 0.2 times basis length, with 2 simple setae; merus 0.7 times ischium length, with simple seta medially, plumose seta laterally, medial and lateral margins each produced as single strong tooth; carpus 1.3 times merus length, with 3 simple and 2 pappose setae medially, plumose seta laterally, lateral margin produced as strong teeth; propodus 0.8 times carpus length, with 3 pappose setae; dactylus 0.6 times propodus length, with 2 simple and 1 microserrate setae terminally; exopod equal to basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 51H).

Pereopod 1 basis 0.9 times length of all other articles together, with 1 simple and 2 plumose setae; ischium 0.07 times basis length, with simple seta, medial margin serrate; merus 4.8 times ischium length, with 6 simple and 1 plumose setae, lateral margin lined with fine hair-like setae; carpus 0.7 times merus length, with 4 simple and 1 plumose setae, medial margin lined with fine hair-like setae; propodus equal to carpus length, with 8 simple setae, margins lined with fine hair-like setae; dactylus 0.7 times propodus length, with 2 simple setae and 3 simple setae terminally; exopod equal to basis length, basal article with 2 simple setae, flagellum with plumo-annulate setae ( Figure 52A).

Pereopod 2 basis 0.6 times length of all other articles together, with 4 simple setae; ischium 0.05 times basis length, unarmed; merus 6.0 times ischium length, with 1 simple and 1 plumose setae; carpus 2.0 times merus length, with 5 simple and 1 plumose setae, lateral margin lined with fine hair-like setae; propodus 0.3 times carpus length, unarmed; dactylus 3.9 times propodus length, with 6 simple and 1 plumose setae, terminal seta plumose; exopod 1.5 times basis length, basal article produced as large tooth proximally, unarmed, flagellum with plumoannulate setae ( Figure 52B).

Pereopod 3 basis 1.4 times length of all other articles together, with 9 simple, 2 plumose and 1 complex pedunculate setae; ischium 0.1 times basis length, with simple seta; merus equal to ischium length, with plumoannulate seta; carpus 2.5 times merus length, with 1 simple, 1 plumo-annulate and 1 annulate setae; propodus 0.5 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 3 simple setae terminally ( Figure 52C).

Pereopod 4 basis with 1 simple and 2 complex pedunculate setae; ischium with simple seta; merus 1.5 times ischium length, with plumo-annulate seta; carpus 2.3 times merus length, with 1 simple and 1 annulate setae; propodus 0.4 times carpus length, with annulate seta; dactylus 0.5 times propodus length, with 3 simple setae terminally ( Figure 52D).

Pereopod 5 basis 0.6 times length of all other articles together, with 2 simple and 3 complex pedunculate setae; ischium 0.2 times basis length, unarmed; merus 2.0 times ischium length, with annulate seta; carpus 2.0 times merus length, with 1 plumo-annulate and 1 annulate setae; propodus 0.4 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 3 simple setae terminally ( Figure 52E).

Uropod peduncles 1.6 times pleonite 6 length, with 3–4 simple setae, lateral margins serrate. Uropod endopod uniarticulate, 0.6 times peduncle length, with 3 simple setae medially, simple seta laterally, terminal seta simple, medial margin strongly toothed. Uropod exopod of 2 articles, 0.9 times length of endopod; article 1 0.1 times article 2 length; article 2 with microserrate seta laterally, terminal seta microserrate ( Figure 52F).

Etymology. The species is named zimmeri in honor of the many contributions of Carl Zimmer to cumacean systematics.

Remarks. Campylaspis schnabelae is the most similar species. However, C. schnabelae has a distinct sulcus in the carapace and very few chromatophores, while C. zimmeri has no sulcus and the body is covered with chromatophores, giving the specimens a red appearance.