Cumella victoriae, Petrescu, Iorgu, Chatterjee, Tapas & Schizas, Nikolaos V., 2014

Petrescu, Iorgu, Chatterjee, Tapas & Schizas, Nikolaos V., 2014, Three new Nannastacidae (Crustacea: Cumacea) species from a Caribbean mesophotic ecosystem, Zootaxa 3765 (4), pp. 360-370 : 364-366

Cumella victoriae sp. nov.

( Fig. 3 )

Material examined. Holotype: immature female ( MGAB CUM 1688), Caribbean Sea, SE Mona Island (18°02'46.0800" N, 67°52'42.7200" W), Puerto Rico, wash from coral Agaricia lamarcki , 240 ft (73.1 meters) depth, 13.01.2010. Collected by the DMS-UPRM-CCRI Trimix Rebreather diving team.

Diagnosis. Carapace with 6 dorsal denticles, smooth ventral margin, uropodal peduncle 0.78 times of last pleonite length, 1.2 times of endopod length, subequal rami, 2 setae on medial margin of endopod.

Description. Body ( Fig. 3 A), 3.25 mm, with smooth integument except the dorsal denticles.

Carapace ( Fig. 3 A), 6 dorsal denticles, long pseudorostrum, about 0.33 times carapace length, ocular lobe with 2 frontal pigmented lenses, twice longer than high, smooth ventral margin with a prominent anterior-ventral corner.

Pleon, one pair of short denticles on posterior end of 1st and 2nd segment.

Antenna 1 ( Fig. 3 B), basal article of peduncle 0.85 times rest of articles length, short main flagellum, as long as apical article of peduncle, minute accessory one, short aesthetascs. Maxilliped 3 ( Fig. 3 C). Basis 0.61 times as long as rest of articles together, short plumose seta on medial margin, 2 long plumose setae on outer margin, merus 2.5 times as long as ischium, one pappose seta on outer margin, carpus 0.83 times as long as merus, 1 pappose outer seta, propodus, 2nd longest article, 1.66 times as long as carpus, 2 pappose setae on medial margin, dactylus 0.4 times as long as propodus, terminal robust seta 1.2 times of dactylus length. With short, incompletely developed exopod.

Pereopod 1 ( Fig. 3 D). Basis 0.52 times as long as rest of articles combined, merus 3 times as long as ischium, 1 simple seta on outer margin, carpus 1.66 times as long as merus, propodus 0.68 times as long as carpus, dactylus 0.62 times as long as propodus, terminal robust seta as long as dactylus. With short exopod.

Pereopod 2 ( Fig. 3 E). Basis 0.52 times as long as rest of articles combined, merus 3.66 times as long as ischium, 1 simple seta on outer margin, carpus 1.45 times as long as merus, dactylus twice of propodus length, 0.62 times as long as carpus, 2 short simple setae on outer margin, 3 short subterminal setae, terminal robust seta 1.4 times as long as dactylus. With short exopod.

Pereopod 3 ( Fig. 3 F). Basis 0.55 times as long as rest of articles together, merus 1.71 times as long as ischium, 1 simple seta on medial margin, carpus 1.33 times as long as merus, propodus 1.25 times as long as carpus, dactylus 0.25 times as long as propodus, fused with terminal robust seta, 1 setule on medial margin.

Pereopod 4 ( Fig. 3 G). Basis 0.39 times as long as rest of articles together, merus twice of ischium length, 1 simple seta on medial margin, propodus 1.04 times as long as carpus, dactylus 0.26 times as long as propodus, 1 seta on medial margin, fused with terminal robust seta.

Pereopod 5 ( Fig. 3 H). Basis 0.35 times rest of pereopod length, merus twice of ischium length, one seta on medial margin, carpus 1.83 times as long as merus, 1.22 times as long as propodus, dactylus 0.31 times of propodus length, 1 seta on medial margin, terminal robust seta fused with dactylus.

Uropod ( Fig. 3 I). Peduncle 0.78 times as long as last pleonite, 1.2 times as long as endopod, exopod 0.93 times as long as endopod, 1 simple seta on outer margin of basal article, terminal robust seta 0.88 times as long as exopod, 2 simple robust setae on medial margin of endopod, terminal sensory robust seta 0.65 times as long as endopod.

Etymology. The species is dedicated in honour of Petrescu’s colleague Victoria Badea, from “Grigore Antipa Museum, as a sign of high gratitude for all her help.

Remarks. Cumella victoriae sp. nov. generally resembles 4 other species of the genus Cumella from the Caribbean Sea with denticles on the carapace and uropods shorter than the last pleonite: C. jamaicensis , C. medeeae , C. zimmeri (all three species described by Petrescu, Iliffe and Sarbu in 1994) from Jamaica ( Petrescu et al. 1994) and C. spinifera Petrescu & Heard, 2004 from Costa Rica ( Petrescu & Heard, 2004). The new species has 2 two pigmented lenses, like other species from the Caribbean, C. hirsuta ( Hansen, 1895) from Bermuda ( Hansen, 1895), C. ocellata Băcescu, 1992 from Bermuda ( Băcescu, 1992), C. serrata Calman, 1911 from U. S. Virgin Islands ( Calman, 1911), Belize ( Petrescu, 2002) and Cuba (Petrescu, 2004) and C. tripunctata Băcescu, 1971 from Florida ( Băcescu, 1971) (only C. serrata with 7 denticles on carapace, but with longer uropods). Differences of selected characters between present new species and related 8 species are given in Table 1 .

Figures

FIGURE 3. Cumella victoriae sp. nov. Holotype immature female A, body, latateral view; B, antennule; C, maxilliped 3; D, pereopod 1; E, pereopod 2; F, pereopod 3; G, pereopod 4; H, pereopod 5; I, left uropod. Scales (In mm): A, 0.1; B, 0.1; C, 0.05; D – H, 0.1; I, 0.05.