Bodotria fionae Bochert

Bochert, Ralf & Zettler, Michael L., 2011, Cumacea from the continental shelf of Angola and Namibia with descriptions of new species, Zootaxa 2978, pp. 1-33 : 9-12

Bodotria fionae Bochert sp. nov.

Figs. 6–7

Type material. Holotype: adult male, 5.2 mm; partially dissected (St. 34: grab sampling; 18°23.116´S, 11°55.289´E) [ ZMB 27913]; Paratypes: 1 preadult male, 3.5 mm (St. 14: grab sampling; 15°10.834´S, 12°04.920´E) [ ZMB 27915]; 2 males 5.1–5.2 mm, 2 juveniles 2.9–3.1 mm (same data as holotype [ ZMB 27914].

Diagnosis. Carapace less than twice as long as deep, without carinae. Maxilliped 3 without gap between prolongation of basis and ischium. Carpus of pereopod 1 about twice as long as propodus: Basis of pereopod 2 about same length as the rest of the limb. Endopod of uropod slightly less than half length of peduncle.

Description. Integument soft, with irregular comb-like surface structure. Carapace ( Fig. 6 A) about 1.7 times as long as high; antero-lateral angle blunt; antennal notch prominent, even concave, moderately indented; without carinae; with a faintly shallow mid-lateral depression behind the antennal notch; eye lobe rounded; eye small, with few lenses; Third pedigerous segment abruptly lower than second in lateral view, about two-thirds as high as second segment.

First antenna ( Fig. 6 B), peduncle triarticulate, articles of peduncle slightly setaceous, with few setae distally; flagellum biarticulate, with five three distally; accessory flagellum rudimentary.

Mouthparts: mandible ( Fig. 6 C) with 9 setae; maxillule ( Fig. 6 D), inner endite with three acuminate setae and two trifurcate setae, outer endite with five pair of acuminate setae; maxilla ( Fig. 6 E), endites exceeding the protopod, with simple and plumose setae; maxilliped 1 ( Fig. 6 F), basis produced distally with three long and two short plumose setae on inner margin, carpus inner margin with 6 distally flattened setae; maxilliped 3 ( Fig. 6 G), basis 2.5 times as long as the following five segments combined length, with its distal extension reaching to the end of merus, arcuate; with a row of eight plumose setae on distal and inner margin; with six short setae midlaterally; ischium and propodus of same length; dactylus slightly shorter and carpus slightly longer than propodus; merus longest, broad, distally elongated; carpus widened distally, with eight short setae on inner margin; carpus with four setae on middle edge; dactylus slender, with short setae distally.

Pereopods: pereopod 1 ( Fig. 7 A), basis 1.7 times longer than the following five segments combined length, arcuate, with one strong, long plumose setae and a simple setae distally, with six setae on mid-posterior margin increasing in size; ischium short, about half length of merus; merus and propodus about same length, slightly shorter than dactylus; carpus very long, about twice as long as propodus. Exopod six-segmented, each segment with two long plumose setae distally. Pereopod 2 ( Fig. 7 B), basis long and slender, about same length as the remaining segments; ischium fused with basis; carpus and dactylus of same length; merus slightly shorter; propodus about half length of merus; dactylus with three setae distally; alls segments sparsely setaceous. Pereopod 3 ( Fig. 7 C) basis long and slender, slightly longer than the remaining segments; carpus longest, with one strong seta distally; ischium and merus of same length, slightly shorter than carpus; propodus slightly shorter than merus, with one strong seta distally; dactylus very short, with one strong terminal seta. Pereopod 4 ( Fig. 7 D) basis shorter than the remaining segments; carpus longest; merus shorter than carpus; propodus shorter than merus; ischium half length of merus; dactylus very short; setation related to pereopod 3. Pereopod 5 ( Fig. 7 E) similar to pereopod 4.

Abdomen with five pairs of pleopods; abdominal sideplates 2–5 with 3–4 spines in axis line on inner edges of each sideplate of both sides, rectangular directed inwards to keep hold of antenna 2.

Uropod ( Fig. 7 F) peduncle about 1.6 times longer than rami; inner margin with ten longer plumose setae, with thirteen shorter serrated setae on distal half of peduncle; endopod slightly shorter than exopod; biarticulate, proximal article 2.5 times longer than distal article, proximal article with six serrated setae on inner edge each interspersed with three hyaline serrations, spines increasing in size, with one long plumose setae distally on outer margin; distal article with two serrated terminal setae increasing in size, with eight hyaline serrations on inner edge and one serrated setae distally; exopod with six plumose setae on inner edge and three terminal setae of different length, one terminal seta very long.

Female: unknown

Etymology. The new species is named after Fiona T.J. Bochert, daughter of the first author.

Remarks. The species nearest to B. fionae sp. nov. are B. laevigata and B. magna , all of these lacking any lateral ridges or carinae on carapace, whereas all other known West African Bodotria species possess distinct lateral carinae. The integument of B. magna is rugose, the prolongation of basal segment of maxilliped 3 reaches only articulation of merus and carpus and the third pedigerous somite is produced to form a point middorsally. The basis of pereopod 1 is only slightly longer than the rest of the limb in B. laevigata and B. magna . In both species the carpus of pereopod 1 is only slightly longer than merus, the basis of pereopod 2 is longer than the rest of the limb, the peduncle of uropods is more than twice as long as rami and the exopod carries only two terminal spines. These characters distinguish it clearly from B. fionae sp. nov.

Distribution. West Africa: Angola and Namibia from 15°–18° S; 38–42 m water depth.

Figures

FIGURE 6. Bodotria fionae sp. nov., adult male. A, lateral view; B, antenna 1; C, mandible; D, maxillule; E, maxilla; F, maxilliped 1; G, maxilliped 3.

FIGURE 7. Bodotria fionae sp. nov., adult male. A, pereopod 1; B, pereopod 2; C, pereopod 3; D pereopod 4; E, pereopod 5; F, uropod.