Procampylaspis rhypakos, Gerken, 2012

Gerken, Sarah, 2012, 3524, Zootaxa 3524, pp. 1-124 : 102-106

Procampylaspis rhypakos n. sp.

Figures 59–62

Type material. Holotype ovigerous female, NIWA 80653 , paratype ovigerous female, dissected, NIWA 80655 , paratype adult male, dissected, NIWA 80654 , paratype adult male, NIWA 46204 , 44.5607°S, 178.4762°W – 44.5592°S, 178.4830°W, 1076–1103 m, 10 April 2007.

Other material examined. 2 juveniles, NIWA 79361 , 44.4862°S, 177.1413°E – 44.4841°S, 177.1416°E, 1235–1239 m, 6 April 2007 . 8 subadult females, 6 juveniles NIWA 79362 , 44.4862°S, 177.1413°E – 44.4841°S, 177.1416°E, 1235–1239 m, 6 April 2007 . 6 specimens, in poor shape, NIWA 79363 , 44.0162°S, 178.5210°E – 44.0143°S, 178.5175°E, 769–771 m, 7 April 2007 . 1 ovigerous female, 6 subadult females, 2 subadult males, NIWA 79364 , 44.5607°S, 178.4762°W – 44.5592°S, 178.4830°W, 1076–1103 m, 10 April 2007 . 1 ovigerous female, 15 juveniles, NIWA 79365 , 44.5607°S, 178.4762°W – 44.5592°S, 178.4830°W, 1076–1103 m, 10 April 2007 . 1 subadult female, 1 juvenile, NIWA 79366 , 43.0650°S, 174.9325°W – 43.0732°S, 174.9348°W, 933–940 m, 13 April 2007 . 1 adult male, NIWA 79367 , 42.6213°S, 175.9225°E – 42.6203°S, 175.9335°E, 1194–1199 m, 26 April 2007 .

Diagnosis. Females and subadult males. Carapace without single large dorsal spine; eyelobe present. Uropod peduncle more than twice as long as pleonite 6. Specimens coated in mucus and fine sediment, obscuring ornamentation of carapace, pereon and pleon. Male. Carapace, pereon and pleon covered in fine spines, without single large dorsal spine; less vaulted than in female. Pleonites 1–5 with lateral depression to accommodate antennal flagellum. Uropod peduncle 3.6 times length of pleonite 6; uropods more setose than in female.

Description of female.

Holotype ovigerous female, 4.2 mm, NIWA 80653. Paratype ovigerous female, 3.8 mm, NIWA 80655. Carapace without single middorsal spine, small spines on frontal lobe and eyelobe; pseudorostral lobes 0.2 times carapace length; eyelobe 0.07 times carapace length, with spines. Pleonite 5 covered in small spines. Entire body covered in mucus and sediment, note it is possible that carapace, pereonites and pleonites are covered with small spines as in the male and as seen on pleonite 5, but it was impossible to determine with the mucus covering the body ( Figures 59A–B).

Antennule peduncle article 1 longest, with 1 simple and 2 complex pedunculate setae, produced as 3 teeth distally, margin lined with fine hair-like setae; article 2 0.6 times article 1 length, with 1 simple and 1 complex pedunculate setae; article 3 0.9 times article 2 length, with pedunculate seta; main flagellum of 3 articles, with 2 aesthetascs, 1 simple and 1 pedunculate setae; accessory flagellum of 2 articles, with 5 long complex pedunculate setae ( Figure 59C).

Mandible navicular, with 5 microserrate setae medially, lacinia mobilis with 2 cusps ( Figure 59D).

Maxillule with 2 endites; outer endite with 11 simple setae terminally, simple seta laterally; inner endite with 1 simple, 1 pappose and 1 dentate setae; palp with 2 microserrate setae ( Figure 59E).

Maxilla with 3 endites; broad endite terminal margin with simple setae, with 2 plumose setae medially; medial narrow endite with 2 simple setae terminally; distal narrow endite with 3 simple setae terminally; both narrow endites extending past margin of broad endite ( Figure 59F).

Maxilliped 1 basis produced as lobe with 1 simple, 1 stout and 2 hook setae; ischium absent; merus 0.2 times basis length, unarmed; carpus 2.8 times merus length, with 12 simple and 2 plumose setae; propodus 0.4 times carpus length, with 3 simple setae; dactylus 0.4 times propodus length, with simple seta ( Figure 59G).

Maxilliped 2 basis with 1 plumose and 1 pappose setae; ischium unarmed; merus 18 times ischium length, unarmed; carpus equal to merus length, with 2 plumose setae; propodus 1.3 times carpus length, with 3 simple and 1 plumose setae; dactylus 0.8 times propodus length, produced as 5 medially directed teeth, with simple seta ( Figure 59H).

Maxilliped 3 basis 1.2 times length of all other articles together, with 2 plumose setae at distal corner; ischium 0.1 times basis length, unarmed; merus 2.2 times ischium length, with plumose seta; carpus 0.9 times merus length, with 3 plumose setae; propodus equal to carpus length, with 4 plumose setae; dactylus 0.7 times propodus length, with 3 simple setae terminally; exopod 0.8 times basis length, basal article unarmed, flagellum with plumoannulate setae ( Figure 60A).

Pereopod 1 basis 1.5 times length of all other articles together, with 3 plumose and 1 microserrate setae, produced as tooth proximally; ischium 0.3 times basis length, with 2 plumose setae; merus 1.1 times ischium length, with 2 simple and 1 plumose setae, lateral margin lined with fine hair-like setae and produced as small teeth; carpus 0.9 times merus length, with 5 simple setae, lateral margin lined with fine hair-like setae; propodus 1.1 times carpus length, with 5 simple setae, margins lined with fine hair-like setae; dactylus 0.4 times propodus length, with 5 simple setae terminally; exopod 0.9 times basis length, basal article unarmed, flagellum with plumoannulate setae ( Figure 60B).

Pereopod 2 basis 0.7 times length of all other articles together, with 4 simple and 2 plumose setae; ischium 0.03 times basis length, unarmed; merus 12 times ischium length, with plumose seta; carpus 1.2 times merus length, with 1 simple, 2 plumose and 1 simple with single subterminal setule setae; propodus 0.5 times carpus length, unarmed; dactylus 2.7 times propodus length, with 7 simple setae, terminal seta simple; exopod 1.5 times basis length, basal article unarmed, flagellum with plumo-annulate setae ( Figure 60C).

Pereopod 3 basis 1.8 times length of all other articles together, with 7 simple, 3 plumose and 2 complex pedunculate setae; ischium 0.1 times basis length, with 2 simple setae; merus1.3 times ischium length, with 2 simple setae; carpus 1.6 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 ( Figure 60D).

Pereopod 4 basis 1.3 times length of all other articles together, with 4 simple and 2 plumose setae; ischium 0.08 times basis length, with simple seta; merus 2.0 times ischium length, with 1 simple and 1 plumose setae; carpus 2.0 times merus length, with annulate seta; propodus 0.3 times carpus length, with annulate seta; dactylus 0.6 times propodus length, with 3 simple setae terminally ( Figure 60E).

Pereopod 5 basis 0.7 times length of all other articles together, with 1 simple and 1 plumose setae; ischium 0.3 times basis length, unarmed; merus equal to ischium length, with simple seta; carpus 2.0 times merus length, with 2 simple and 1 annulate setae; propodus 0.4 times carpus length, with 1 annulate and 1 complex pedunculate setae; dactylus 0.4 times propodus length, with 2 simple setae terminally ( Figure 60F).

Uropod peduncles 2.3 times pleonite 6 length, with 5–6 simple setae. Uropod endopod uniarticulate, 0.6 times peduncle length, with 3 microserrate with single subterminal setule setae medially, 1 simple with single subterminal setule, 1–5 pedunculate and 0–4 complex pedunculate setae laterally, terminal seta simple with single subterminal setule. Uropod exopod of 2 articles, 0.8 times length of endopod; article 1 0.3 times article 2 length, with simple seta; article 2 with 1 simple and 1 simple with single subterminal setule setae, terminal seta simple with single subterminal setule ( Figure 60G).