Vaunthompsonia budaii, 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 : 536-538

Vaunthompsonia budaii sp. nov.

( Figs. 6 , 7 )

Material Examined. Holotype male, MGAB CUM 1709; paratypes: 28 ♂♂, MGAB CUM 1700. 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. Absence of pigmented spots on dorsal side of carapace, pereon, pleon and from the propodus of pereopod 1. Anterior part of carapace narrow and frontal apex pointed (in lateral view), carapace 1.61 times longer than high, ocular lobe ornamented with 8 lateral lenses, 1 central bigger and 2 posterior ones. Pereopod 1 basis with 3 stout long setae on medial margin. Uropodal peduncle 0.90 times exopod length.

Description. Male. Body ( Fig. 6 A) size: 2.67 mm.

Carapace ( Fig. 6 A, B). Anterior part of carapace narrow and frontal apex pointed (in lateral view, fig 6A). Carapace 1.61 times longer than high, without pigmented dorsal spots; ocular lobe ornamented with 8 lateral lenses, 1 central bigger and 2 posterior ones.

Antenna 1 ( Fig. 6 C). Basal article of peduncle as long as rest of articles combined length, 4 simple setae on medial margin, 1 on outer margin; 3 simple setae on medial margin, 2 on outer margin; 3 setae on outer margin of apical article, accessory flagellum, short.

Antenna 2. Drawn in Fig. 6 D.

Labium, with 3 teeth on each lobe, like in Fig. 6 E.

Mandible ( Fig. 6 F). Pars incisiva with 4 teeth, lacinia mobilis with 3 teeth, 7 setae between lacinia and robust pars molaris.

Maxilla 1 ( Fig. 6 G). With 7 stout pectinate setae on top of outer endite, 5 setae on inner endite, palpus with 2 filaments.

Maxilla 2 ( Fig. 6 H). With 3 pectinate setae on top of endite article, protopodus with simple and pectinate setae, 10 simple ones on medial margin.

Maxilliped 1 ( Fig. 6 I). Basis with 4 pectinate setae, 2 retinacula and 3 stout setae on top of medial process, carpus with 6 hand-like setae on medial margin, dactylus with a long terminal seta.

Maxilliped 2 ( Fig. 7 A). Basis with a long plumose seta, other plumose seta on medial margin of merus, carpus with 2 medial and 1 pappose ones on medial margin, 4 pappose setae on medial margin of propodus, 0.95 times as long as carpus, dactylus 0.58 times as long as propodus, 1 seta on medial margin, robust terminal seta.

Maxilliped 3 ( Fig. 7 B). Basis 1.43 times rest of articles combined, 8 plumose setae on medial margin, 2 plumose setae on outer margin, merus 2.50 times ischium length, carpus 1.40 times merus length, 3 plumose setae on medial margin, 1 on outer margin, propodus 0.71 times carpus length, 2 pappose setae on medial margin of propodus, 4 simple setae on outer margin, upper 2 of them backwardly directed, dactylus 0.75 times propodus length, terminal robust seta 1.66 times dactylus length. Exopod with inflated basis.

Pereopod 1 ( Fig. 7 C). Basis 0.65 times rest of articles combined length, merus twice times ischium length, carpus 1.86 times merus length, 3 setae on medial margin, 1 on outer margin, propodus 1.17 times carpus length, 3 simple setae on both margins, dactylus 0.75 times propodus length, short terminal seta. Exopod with inflated basis.

Pereopod 2 ( Fig. 7 D). Basis 1.30 times rest of articles combined length, 4 plumose and 4 simple setae on medial margin; carpus 1.15 times merus length, with 3 simple stout setae on medial margin, other 2 on outer margin, dactylus 3 times propodus length, 3 vs. 2 setae on medial margin, 2 simple setae on outer margin, 4 shorter and one longer terminal setae. Exopod with inflated basis.

Pereopod 3 ( Fig. 7 E). Basis 1.76 times rest of articles combined length, carpus with 2 annulate setae, dactylus with a short terminal seta. Exopod with inflated basis.

Pereopods 4 ( Fig. 7 F). Basis 1.09 times rest of articles length, carpus as long as ischium and merus combined length. Exopod with inflated basis.

Pereopod 5 ( Fig. 7 G). Basis 0.48 times rest of articles combined length.

Uropod ( Fig. 7 H). Peduncle 1.10 times last pleonite length, 0.90 times exopod length, 0.76 times endopod length, 9 simple setae on medial margin, exopod 0.86 times endopod length, 4 simple short setae on both margins, 3 subterminal setae and 1 terminal stout seta, half of exopod length, endopod, 2-segmented, proximal article 1.86 times distal one length, 11 short stout setae on medial margin of proximal article, 1 seta on outer margin, 3 simple stout short setae on medial margin of distal article, 1 subterminal and 1 terminal seta, 0.86 times distal article length. Without pigmented spots.

Etymology. The new species is dedicated in honor of Pârvu Budăi, colleague of first author (IP) from the National Museum of Natural History “Grigore Antipa”.

Remarks. Vaunthompsonia budaii sp. nov. is closely related to V. floridana Băcescu (1971) from Florida and Jamaica ( Petrescu, Iliffe & Sarbu, 1993) with pleonite 6 without denticulate apical margin. The V. budaii sp. nov. differs in the absence of characteristic pigmented spots on dorsal side of carapace, pereon and pleon and from the propodus of pereopod 1, all present in V. floridana . The anterior part of carapace (in lateral view) is broader and frontal apex blunt in V. floridana (See Fig. 8A Petrescu et al. 1993) while in V. budaii the anterior part of the carapace (in lateral view) is narrower than V. floridana and frontal apex pointed ( Fig. 6 A). The other differences between V. budaii sp. nov. and V. floridana are: 1) carapace longer (ratio length/height, 1.75 vs. 1.68), 2) pereopod 1, merus/ischium, 2.00 vs. 1.66, carpus/merus, 1.86 vs. 2.50, carpus/propodus, 1.17 vs. 1.2, propodus/dactylus, 0.75 vs. 0.65, 3) pereopod 2, basis with 7 vs. 6 setae on medial margin, carpus with 2 setae on outer margin vs. 1, dactylus with 3 setae on each margin vs. 2, 4 subterminal setae vs. 2, 4) pereopod 3 ischium without setae vs. 1, merus with 2 setae vs. none, propodus without setae vs. 1 seta, 5) pereopod 4 basis without setae vs. 2, ischium without setae vs. 2, merus with 1 seta vs. 2, carpus with 3 setae vs. 5, 6) pereopod 5 basis with 3 setae vs. 8, ischium with 1 seta vs. 2, merus with 1 seta vs. 3, carpus with 3 simple setae vs. 7, 7) uropodal peduncle with 8 vs. 12 setae, distal article of exopod with 5 setae vs. 7, distal article of endopod with 4 vs. 3 setae on medial margin.

Figures

FIGURE 6. Vaunthompsonia budaii sp. nov. Holotype male A, body, lateral view; B, carapace, dorsal view; C, antenna 1; D, antenna 2; E, labium; F, mandible; G, maxilla 1; H, maxilla 2. Scales in mm: A, 1; B, 0.3; C, 0.2; D – H, 0.1.

FIGURE 7. Vaunthompsonia budaii sp. nov. Holotype male A, maxilliped 2; B, maxilliped 3; C, pereopod 1; D, pereopod 2; E, pereopod 3; F, pereopod 4; G, pereopod 5; H, uropod. Scales in mm: A, 0.1; B – H, 0.2.