Cyclaspis mariae, Petrescu, Iorgu, Chatterjee, Tapas & Schizas, Nikolaos V., 2014

Petrescu, Iorgu, Chatterjee, Tapas & Schizas, Nikolaos V., 2014, New records of Bodotriidae (Crustacea: Cumacea) from Puerto Rico with descriptions of three new species, Zootaxa 3873 (5), pp. 526-540 : 530-532

Cyclaspis mariae sp. nov.

( Fig. 3 )

Material examined. Holotype, male, 2.92 mm, MGAB CUM 1692. Type locality: San Cristobal Cay, Puerto Rico, 17°56'32.95"N, 67°4'42.09"W, 9.06.2012, night plankton net tow at surface, location of the sampling at 4.5 m depth, collector Nikolaos V. Schizas.

Diagnosis. Antennule with aesthetascs with last but one article dilated, uropodal peduncle 1.48 times pleopod 6 length, endopod with 7 pectinate medial setae.

Description. Adult male

Body ( Fig. 3 A), size, 2.92 mm, smooth tegument.

Carapace ( Fig. 3 A, B). It is 0.30 times of entire body length, twice longer than high; smooth tegument, not beset with pits, without dorsal carina; ocular lobe with 8 lateral smaller lenses and 1 central, bigger.

Antenna 1 ( Fig. 3 C, D). First article of peduncle as long as rest of articles combined, main flagellum with thin articles, aesthetascs with last but one article dilated, minute accessory flagellum.

Antenna 2, not figured, its filament reaches the end of pleon.

Maxilliped 3 ( Fig. 3 E). Basis 1.67 times as long as rest of articles combined length, 3 plumose setae on medial margin of process, 2 long ones on distal end, 1 plumose seta on medial margin; merus with a large outer process reaching distal extremity of carpus, one short simple seta on top of process, carpus 1.23 times as long as propodus, 3 short simple setae on medial margin, 1 simple short seta on outer distal margin; enlarged propodus, 2.60 times as long as dactylus, three pappose setae on medial margin; dactylus with a terminal seta 1.40 times dactylus length.

Pereopod 1 ( Fig. 3 F). Basis 1.16 times as long as rest of articles combined length, with 6 stout, spinelike setae on medial margin, serrate outer margin; merus 1.71 times ischium length; carpus slender, twice longer than merus; ischium to carpus with smooth medial margin; propodus as long as carpus, 2.75 times as long as dactylus, 1 setule on medial margin, 2 on outer one; dactylus with a terminal stout curved seta.

Exopods on maxilliped 3 and pereopod 1.

Pereopod 2 ( Fig. 3 G). Basis with serrate medial margin, 1 simple seta on outer margin; merus with smooth medial margin, 3.03 times ischium length, 1 simple seta on medial margin; carpus, half of merus length, 2 sensory unequal setae on distal medial corner; dactylus 2.75 times propodus length, 1 simple seta on medial margin, 4 terminal setae, longer one, 1.18 dactylus length.

Pereopod 3 ( Fig. 3 H). Basis 0.92 times rest of articles combined length, serrate margins; ischium half of merus length, 1 simple seta on outer margin, merus with 1 outer seta; carpus 1.3 times merus length, 1 setule and 1 annulate seta on outer medial margin, dactylus half of propodus length, with terminal stout seta.

Pereopod 4 ( Fig. 3 I). Basis 0.82 times rest of articles combined length, ischium with 2 simple setae, carpus 1.18 times merus length, with 1 annulate medial seta, 1 setule on propodus, dactylus half of propodus length, with terminal stout seta.

Pereopod 5 ( Fig. 3 J). Basis 0.55 times as long as rest of articles combined length, carpus 1.44 times merus length.

Uropod ( Fig. 3 K). Peduncle 1.48 times pleonite 6 length, 0.67 times endopod length, 5 long plumose setae and 4 shorter ones on medial margin, 1.57 times rami length; exopod with smooth margins, 1 subterminal setule and a terminal short stout seta, endopod with 7 pectinate setae and short serration on medial margin, 1 subterminal and 1 terminal stout short pectinate sensory setae.

Etymology. The species is dedicated in honor of Maria Bliderişanu, specialist in Public Relations in the Museum “Grigore Antipa”, as a sign of distinction.

Remarks. Cyclaspis mariae n. sp. resembles C. micans Roccatagliata (1985) , C. kensleyi Petrescu (2002) and C. platymerus Zimmer (1944) especially regarding the carapace elongated form and general aspect of uropods. It differs with: 1) carapace without dorsal ridge, 2) carapace without lateral elevations beside frontal lobe like in C. platymerus , 3) maxilliped 3 without setae on outer margin of basis process like in C. micans and C. kensleyi , 4) pereopod 1 with shorter merus than in C. platymerus , 5) pereopod 2 dactylus with 1 lateral seta vs. 3 in C. kensleyi , 6) uropodal peduncle without median carina like in C. kensleyi , more like in C. platymerus , but with 7 setae vs. 8 setae.

Figures

FIGURE 3. Cyclaspis mariae sp. nov. Holotype male A, body, lateral view; B, carapace, dorsal view; C, antenna 1; D, tip of main flagellum, enlarged; E, maxilliped 3; F, pereopod 1; G, pereopod 2; H, pereopod 3; I, pereopod 4; J, pereopod 5; K, uropod. Scales in mm: A, B, 0.5; C, 0.25; D – K, 0.2.