Cyclaspis hayeae, Gerken, Sarah, 2013

Gerken, Sarah, 2013, New Zealand Bodotriidae (Crustacea: Cumacea), Zootaxa 3630 (1), pp. 1-38 : 18-22

Cyclaspis hayeae n. sp.

Figures 9–10

Type material. Holotype preparatory female, NIWA 80735; Paratype ovigerous female, dissected, NIWA 80736; Paratypes, 2 ovigerous females, NIWA 80737; 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007.

Other material examined. 1 subadult male, NIWA 84459, 43.7967°S, 175.3158°E – 43.8045°S, 175.3148°E, 418–422 m, 27 April 2007. 1 ovigerous female, 1 manca, NIWA 84457, 42.6213°S, 175.9225°E – 42.6203°S, 175.9335°E, 1194–1199 m, 26 April 2007. 3 juveniles, 1 manca, NIWA 84458, 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007. 1 manca, NIWA 84463, 44.4862°S, 177.1413°E – 44.4841°S, 177.1416°E, 1235–1239 m, 6 April 2007. 1 ovigerous female, 3 juveniles, NIWA 84460, 43.9790°S, 179.6298°E – 43.9850°S, 179.6218°E, 529–530 m, 9 April 2007. 1 subadult male, NIWA 84461, 40.1277°S, 170.2140°E – 40.1352°S, 170.2090°E, 803–805 m, 5 June 2007. 2 juveniles, 8 mancae, NIWA 84462, 43.0650°S, 174.9325°W – 43.0732°S, 174.9348°W, 933–940 m, 13 April 2007. 1 manca, NIWA 84464, 38.3720°S, 168.5670°E – 38.3720°S, 168.5670°E, 482 m, 28 May 2007. 2 juveniles, 1 manca, NIWA 45838, 42.9958°S, 178.9957°E – 42.9910°S, 179.0052°E, 520–530 m, 24 April 2007. 2 subadult males, 6 juveniles, 15 mancae, NIWA 45840, 42.7820°S, 176.7152°W – 42.7817°S, 176.7042°W, 1023–1026 m, 16 April 2007. 1 juvenile, NIWA 45839, 43.2903°S, 175.5522°W – 43.2933°S, 175.5630°W, 638–644, 15 April 2007. 4 juveniles, 6 mancae, NIWA 84465, 38.6177°S, 168.9428°E – 38.6258°S, 168.9490°E, 480–482 m, 29 May 2007. 1 manca, NIWA 84466, 44.0750°S, 174.5069°E – 44.0750°S, 174.5074°E, 520 m, 3 April 2007. 1 manca, NIWA 84467, 43.0650°S, 174.9325°W – 43.0732°S, 174.9348°W, 933–940 m, 13 April 2007.

Diagnosis. Female. Carapace smooth, not reticulated nor pitted; 0.7 as high as long; eyelobe without lenses; antennal notch present; anteroventral corner smooth. Pereonite 1 entirely concealed. Pereonite 2 not produced dorsally. Pleon without lateral articular pegs. Uropod peduncles much shorter than pleonite 6; endopod slightly longer than exopod; endopod with single seta medially; exopod with no medial setae. Male. Adult unknown.

Description. Holotype ovigerous female, 8.2 mm, NIWA 80735. Paratype ovigerous female, 6.5 mm, NIWA 80736. Carapace smooth, 0.7 as high as long; pseudorostral lobes 0.3 times carapace length; eye lobe 0.1 times carapace length, without lenses; carapace twice as long pereonites together. Pereonite 1 concealed. Pleon longer than carapace and pereonites together ( Figures 9 A–B).

Antennule peduncle article 1 longest, unarmed; article 2 0.5 times article 1 length, unarmed; article 3 1.3 times article 2 length, with simple seta; main flagellum of 4 articles, with 2 aesthetascs and pedunculate seta; accessory flagellum of 1 article, with 4 simple setae ( Figure 9 C).

Mandible navicular ( Figure 9 D).

Maxillule with 2 endites; outer endite broad, with 2 rows of stout simple setae terminally, lateral margin with fine hairlike setae and simple seta; inner endite with 2 simple, 1 tricuspid and 2 pappose setae; palp with 2 microserrate setae ( Figure 9 E).

Maxilla with 3 endites; broad endite distal margin with pappose seta and row of simple setae, distomedial corner with 4 pappose setae, medial margin with row of setae; medial narrow endite with 4 microserrate setae terminally; distal narrow endite with 5 microserrate setae terminally; both narrow endites extending to distal margin of broad endite ( Figure 9 F).

Maxilliped 1 basis 1.2 times length of all other articles together, produced as lobe medially, medial margin with 7 simple setae, 2 hook and 1 pappose setae distally; ischium absent; merus 0.2 times basis length, unarmed; carpus 2.0 times merus length, with 3 beak and 2 pappose setae medially, plumose seta laterally; propodus 0.6 times carpus length, with 2 simple and 2 microserrate setae distally; dactylus 0.4 times propodus length, with 3 simple setae terminally ( Figure 9 G).

Maxilliped 2 broken, produced as strong teeth laterally, lateral margin with 3 microserrate setae distally, plumose seta at medial distal corner; ischium absent; merus with thickly plumose seta medially; carpus 1.8 times merus length, with 5 plumose setae medially, plumose seta laterally; propodus 0.6 times carpus length, with 4–6 plumose setae; dactylus 0.6 times propodus length,with 4 simple setae terminally ( Figure 9 H).

Maxilliped 3 basis 2.3 times length of all other articles together, produced distally to midpoint of merus, with 4 short plumose setae terminally; ischium 0.06 times basis length, unarmed; merus 1.8 times ischium length, with plumose seta laterally; carpus 1.1 times merus length, unarmed; propodus 0.6 times carpus length, unarmed; dactylus equal to propodus length, with 3 simple setae terminally; exopod shorter than basis, flagellum with plumo–annulate setae ( Figure 10 A).

Pereopod 1 basis 1.1 times length of all other articles together, lateral margin lined with fine hairlike setae, with plumose seta at distolateral corner; ischium 0.08 times basis length, unarmed; merus 1.3 times ischium length, unarmed; carpus 2.2 times merus length, unarmed; propodus 1.1 times carpus length, unarmed; dactylus 0.7 times propodus length, with 6 simple setae terminally; exopod shorter than basis, flagellum with plumo–annulate setae ( Figure 10 B).

Pereopod 2 basis 1.1 times length of all other articles together, with fine hairlike setae; ischium 0.08 times basis length, with plumose seta; merus 3.3 times ischium length, with plumose seta; carpus equal to merus length, with 3 microserrate setae; propodus 0.4 times carpus length, unarmed; dactylus 2.5 times propodus length, with 3 microserrate setae terminally ( Figure 10 C).

Pereopod 3 basis 1.4 times length of all other articles together, with plumose seta distally; ischium 0.08 times basis length, with annulate seta; merus 2.3 times ischium length, with 1 simple and 2 annulate setae; carpus 1.3 times merus length, with 7 annulate setae; propodus 0.6 times carpus length, unarmed; dactylus 0.6 times propodus length, with 3 simple setae terminally ( Figure 10 D).

Pereopod 4 basis 0.9 times length of all other articles together, with plumose seta; ischium 0.1 times basis length, with 2 annulate setae; merus 3.0 times ischium length, with annulate seta; carpus 1.3 times merus length, with 1 simple and 6 annulate setae; propodus 0.5 times carpus length, with 1 simple and 1 annulate setae; dactylus 0.7 times propodus length, with 3 simple setae terminally ( Figure 10 E).

Pereopod 5 basis 0.7 times length of all other articles together, with plumose seta; ischium 0.2 times basis length, with annulate seta; merus 1.8 times ischium length, with 2 annulate setae; carpus 1.7 times merus length, with 4 annulate setae; propodus 0.5 times carpus length, with annulate seta; dactylus 0.7 times propodus length, with 4 simple setae terminally ( Figure 10 F).

Uropod peduncles 0.4 times pleonite 6 length, unarmed. Uropod endopod medial margin serrate, with microserrate seta medially, no terminal seta, 2.0 times peduncle length. Uropod exopod of 2 articles, 1.1 times length of endopod; article 1 0.2 times article 2 length, unarmed; article 2 unarmed, medial margin weakly serrate, short stout terminal seta simple with single subterminal setule ( Figure 10 G).

Etymology. The species is named for Dr. Pilar Haye, in recognition of her contributions to the systematics of the Bodotriidae .

Remarks.This species is most similar to the other New Zealand species that have no lateral ridges on the carapace, C. levis , C. petrescui and C. zealandiaensis . Both C. levis and C. petrescui have distinct lenses in the eyelobe, unlike C. hayeae . Cyclaspis zealandiaensis can be differentiated by the carapace being about 0.5 as high as long, and the female uropod exopod bearing 3 long microserrate setae medially. In comparison, C. hayeae has the carapace about 0.7 as high as long, and the female uropod exopod has no setae medially. The male of C. hayeae is unknown.

Figures

FIGURE 9. Cyclaspis hayeae n. sp. Holotype preparatory female, NIWA 80735. A, side view. Paratype ovigerous female, NIWA 80736. B, dorsal view; C, antennule; D, mandible; E, maxillule; F, maxilla; G, maxilliped 1; H, maxilliped 2.

FIGURE 10. Cyclaspis hayeae n. sp. Paratype ovigerous female, NIWA 80736. A, maxilliped 3; B, pereopod 1; C, pereopod 2; D, pereopod 3; E, pereopod 4; F, pereopod 5; G, pleonite 6 and uropods.