Campylaspis apheles, Gerken, 2012

Gerken, Sarah, 2012, 3524, Zootaxa 3524, pp. 1-124 : 31-37

Campylaspis apheles n. sp.

Figures 16–19

Type material. Holotype subadult female, NIWA 80673, paratype subadult female, dissected, NIWA 80674, paratype adult male, dissected, NIWA 80675 0705/160.

Other material examined. 3 juveniles, NIWA 79310 , 43.8363°S, 176.7092°E – 43.8330°S, 176.7127°E, 478–479 m, 5 April 2007 . 1 ovigerous female, 1 subadult male, NIWA 79311 , 44.0162°S, 178.5210°E – 44.0143°S, 178.5175°E, 769–771 m, 7 April 2007 . 2 juveniles, NIWA 46203 , 44.5607°S, 178.4762°W – 44.5592°S, 178.4830°W, 1076–1103 m, 10 April 2007 . 1 subadult female, NIWA 79312 , 43.0650°S, 174.9325°W – 43.0732°S, 174.9348°W, 933–940 m, 13 April 2007 . 2 mancae, NIWA 46206 , 43.2903°S, 175.5522°W – 43.2933°S, 175.5630°W, 638–644, 15 April 2007 . 1 juvenile, NIWA 79313 , 0705 /160 . 4 subadult females, 2 mancae, NIWA 46210 , 0705 /160 . 2 specimens, NIWA 79314 , 0705 /160 . 8 juveniles, NIWA 79315 , 43.5212°S, 178.6203°W – 43.5228°S, 178.6315°W, 424–425 m, 18 April 2007 . 9 subadult females, 4 juveniles, NIWA 46201 , 42.9958°S, 178.9957°E – 42.9910°S, 179.0052°E, 520–530 m, 24 April 2007 . 1 subadult female, NIWA 79316 , 42.9958°S, 178.9957°E – 42.9910°S, 179.0052°E, 520–530 m, 24 April 2007 . 1 subadult female, NIWA 79317 , 43.5300°S, 178.5048°E – 43.5363°S, 178.5118°E, 346 m, 24 April 2007 . 3 juveniles, NIWA 46213 , 43.5300°S, 178.5048°E – 43.5363°S, 178.5118°E, 346 m, 24 April 2007 . 1 ovigerous female, 2 subadult females, NIWA 79318 , 43.7967°S, 175.3158°E – 43.8045°S, 175.3148°E, 418–422 m, 27 April 2007 . 1 subadult male, NIWA 79319 , 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007 . 1 ovigerous female, NIWA 79320 , 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007 . 1 adult male, 2 mancae, NIWA 46202 , 36.9202°S, 167.5302°E – 36.9120°S, 167.5325°E, 1207–1213 m, 30 May 2007 . 2 subadult females, 10 juveniles, NIWA 46216 , 40.8800°S, 170.8555°E – 40.8883°S, 170.8565°E, 529–534 m, 6 June 2007 .

Diagnosis. Females and subadult males. Carapace smooth; pseudorostrum not dorsally directed. Carapace, pereonites and pleonites with very few red chromatophores. Pereonites 1–3 free only dorsally. Pereopod 2 dactylus clublike, with short setae and no terminal seta. Uropod peduncles at least 3 times length of pleonite 6. Male. Carapace less vaulted than in female. Uropods much more setose than in female.

Description of female.

Holotype female, 3.0 mm, NIWA 80673. Carapace smooth, without sulcus or tubercles, with very few scattered red chromatophores; pseudorostral lobes 0.3 times carapace length; eyelobe 0.03 times carapace length, without lenses; carapace overhanging pereonites 1–4, pereonites 1–3 free only dorsally ( Figures 16A–B).

Antennule peduncle article 1 1.1 times article 2 length, with pappose seta; article 2 0.9 times article 1 length, with 1 simple and 1 complex pedunculate setae; article 3 longest, 1.4 times article 2 length, with 1 simple and 1 complex pedunculate setae; main flagellum of 3 articles, with 2 aesthetascs and 1 simple setae; accessory flagellum of 1 article, with 2 simple and 1 complex pedunculate setae ( Figure 16C).

Mandible truncate, with 3 microserrate setae medially, lacinia mobilis with 1 cusp ( Figure 16D).

Maxillule with 2 endites; outer endite with double row of stout simple setae; inner endite with 5 simple setae; palp with single microserrate seta ( Figure 16E).

Maxilliped 1 basis with 2 hook, 1 simple and 1 pappose setae; merocarpus with 5 simple setae medially, lateral margin lined with fine hair-like setae; dactylus minute with simple seta ( Figure 16F).

Maxilliped 2 basis 0.9 times length of all other articles together, with plumose seta; ischium absent; merus 0.2 times basis length, with plumose seta; carpus 1.3 times merus length, with 2 plumose setae; propodus equal to carpus length, with 2 plumose setae medially and 1 plumose seta laterally; dactylus 1.1 times propodus length, produced as 3 equal teeth terminally ( Figure 16G).

Maxilliped 3 basis 0.9 times length of all other articles together, with 3 plumose setae medially and 2 large and 2 small plumose setae at distal corner; ischium 0.08 times basis length, with 2 plumose setae medially; merus 6.7 times ischium length, with 7 simple setae medially, plumose seta laterally, medial margin serrate; carpus 0.5 times merus length, with 2 plumose and 1 simple setae medially, plumose seta laterally, medial and lateral margins serrate; propodus 1.3 times carpus length, with 3 plumose setae medially, plumose seta laterally, medial margin serrate; dactylus 0.5 times propodus length, with 4 simple setae terminally; exopod equal to basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 16H).

Pereopod 1 basis equal to length of all other articles together, with 3 plumose setae; ischium 0.04 times basis length, with plumose seta; merus 6.5 times ischium length, with 6 plumose and 2 simple setae; carpus 0.9 times merus length, with 4 plumose and 2 simple setae; propodus 0.8 times carpus length, with 3 plumose and 1 simple setae; dactylus 0.9 times propodus length, with 3 simple and 1 plumose setae, and simple seta terminally; exopod 1.1 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 16I).

Pereopod 2 basis 0.4 times length of all other articles together, with pappose seta; ischium 0.1 times basis length, unarmed; merus 1.9 times ischium length, with 2 pappose setae; carpus 2.7 times merus length, with 3 simple and 1 plumose setae; propodus 0.4 times carpus length, with simple seta; dactylus 4.1 times propodus length, with 14 short simple setae, no terminal seta; exopod 1.5 times basis length, basal article with simple seta, flagellum with plumo-annulate setae ( Figure 17A).

Pereopod 3 basis 1.7 times length of all other articles together, with 4 simple and 1 plumose setae; ischium 0.06 times basis length, with 1 simple and 1 plumose setae; merus 2.3 times ischium length, with plumose seta; carpus 1.9 times merus length, with 1 plumose and 2 annulate setae; propodus 0.4 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 3 setae terminally ( Figure 17B).

Pereopod 4 basis equal to length of all other articles together, with 4 simple and 1 plumose setae; ischium 0.1 times basis length, with plumose seta; merus 1.7 times ischium length, with plumose seta; carpus 2.0 times merus length, with 1 plumose and 2 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.8 times propodus length, with 3 setae terminally; ( Figure 17C).

Pereopod 5 basis 0.7 times length of all other articles together, with 3 simple setae; ischium 0.2 times basis length, with plumose seta; merus 1.2 times ischium length, with plumose seta; carpus 2.7 times merus length, with 1 simple, 1 plumose and 2 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.8 times propodus length, with 3 setae terminally ( Figure 17D).

Uropod peduncles 3.0 times pleonite 6 length, with 0–3 simple setae medially, medial margin serrate. Uropod endopod uniarticulate, 0.5 times peduncle length, with 8 microserrate setae medially, 0–1 simple setae laterally, terminal seta simple. Uropod exopod of 2 articles, equal to length of endopod; article 1 0.3 times article 2 length, with 0–1 complex pedunculate seta; article 2 with 3 simple setae and simple terminal seta ( Figure 17E).

Description of male.

Paratype adult male, 3.1 mm, NIWA 80675. Carapace smooth, without chromatophores; pseudorostral lobes 0.2 times carapace length; eyelobe 0.04 times carapace length, without lenses; carapace overhanging pereonites 1–3, pereonites 1–2 only free dorsally ( Figures 18A–B).

Antennule peduncle article 1 equal to article 2 length, with plumose seta; article 2 equal to article 1 length, with complex pedunculate seta; article 3 longest, 1.2 times article 2 length, with 1 simple and 1 complex pedunculate setae; main flagellum of 3 articles, with 2 aesthtascs and simple seta; accessory flagellum of 1 article, with 3 simple and 1 complex pedunculate setae ( Figure 18C).

Antenna extending to posterior border of pleonite 6; peduncle of 5 articles, sparsely setose; articles 4–5 with ranks of setae, incompletely circling articles; flagellum broke with dissection, articles each with 2 setae ( Figure 18D).

Maxilliped 3 basis 0.9 times length of all other articles together, with 2 pappose setae medially, 2 plumose setae at distal corner, medial margin lined with fine hair-like setae; ischium 0.05 times basis length, medial margin produced as single large tooth; merus 10 times ischium length, with 9 simple setae medially, plumose seta laterally, medial margin serrate; carpus 0.4 times merus length, with 2 simple and 2 pappose setae medially, plumose seta laterally, medial and lateral margins serrate; propodus 1.4 times carpus length, with 3 pappose setae medially and pappose seta laterally, medial margin produced as 4 strong teeth proximally; dactylus 0.5 times propodus length, with 4 simple setae terminally; exopod extending past distal margin of basis, basal article unarmed, flagellum with plumo-annulate setae ( Figure 18E).

Pereopod 1 basis 1.1 times length of all other articles together, with 2 pappose and 1 plumose setae; ischium 0.1 times basis length, with pappose seta; merus 2.8 times ischium length, with 3 simple and 5 papposee setae; carpus 0.9 times merus length, with 4 simple, 1 pappose and 2 plumose setae; propodus 0.8 times carpus length, with 2 simple and 2 plumose setae; dactylus equal to propodus length, with 2 simple setae and 2 simple setae terminally; exopod 0.9 times basis length, basal article with 2 simple setae, flagellum with plumo-annulate setae ( Figure 18F).

Pereopod 2 basis 0.5 times length of all other articles together, with pappose seta; ischium 0.03 times basis length, unarmed; merus 6 times ischium length, with 2 pappose setae; carpus 2.9 times merus length, with 3 simple, 1 pappose, 1 microserrate and 1 complex pedunculate setae; propodus 0.3 times carpus length, with complex pedunculate seta; dactylus 4.9 times propodus length, with 14 simple setae, no terminal seta; exopod 1.2 times basis length, basal article with simple seta, flagellum with plumo-annulate setae ( Figure 19A).

Pereopod 3 basis 2.3 times length of all other articles together, with 2 simple and 4 complex pedunculate setae; ischium 0.06 times basis length, with 1 pappose and 1 plumo-annulate setae; merus equal to ischium length, with pappose seta; carpus 3.2 times merus length, with 1 simple and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus equal to propodus length, with 3 setae terminally; exopod equal to basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 19B).

Pereopod 4 basis 1.4 times length of all other articles together, with 1 simple, 1 pappose and 3 complex pedunculate setae; ischium 0.07 times basis length, with pappose seta; merus 1.8 times ischium length, with pappose seta; carpus 2.7 times merus length, with 1 simple and 1 annulate setae; propodus 0.3 times carpus length, with annulate seta; dactylus 0.8 times propodus length, with 3 setae terminally; exopod equal to basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 19C).

Pereopod 5 basis 0.8 times length of all other articles together, with 2 simple and 2 pappose setae; ischium 0.1 times basis length, with pappose seta; merus 1.8 times ischium length, with pappose seta; carpus 2.4 times merus length, with 2 simple and 1 annulate setae; propodus 0.4 times carpus length, with annulate seta; dactylus 0/7 times propodus length, with 3 setae terminally ( Figure 19D).

Uropod peduncles 3.6 times pleonite 6 length, with 10 microserrate and 4–5 simple setae medially, 0–1 simple seta laterally. Uropod endopod uniarticulate, 0.4 times peduncle length, with 10 microserrate setae medially, 5 pedunculate setae laterally, terminal seta microserrate with single subterminal setule. Uropod exopod 0.9 times length of endopod; article 1 0.3 times article 2 length, with simple seta; article 2 with 4–5 microserrate setae, terminal seta microserrate with single subterminal setule ( Figure 19E).

Etymology. The name is from the Greek apheles , meaning smooth or simple, in reference to the smooth, untextured and unornamented carapace.

Remarks. Campylaspis apheles is most similar to C. rufus , but C. rufus is larger, covered in red chromotaphores, and has shorter, more robust uropods. In addition, C. apheles is unique in the New Zealand Campylaspis fauna in possessing an unusual dactylus on pereopod 2, which is very long and robust with short setae and no terminal seta. In comparison, all other species of Campylaspis and Campylaspenis from New Zealand waters have the typical dactylus on pereopod 2, shorter and with long setae, including a long terminal seta.