Vaunthompsonia cristata Bate 1858
Creators: name: Petrescu, Iorgu
name: Chatterjee, Tapas
name: Schizas, Nikolaos V.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Cumacea
Bodotriidae
Vaunthompsonia
Vaunthompsonia cristata

description: Vaunthompsonia cristata Bate, 1858
(Figs. 4, 5)
Material examined. 1 immature ♀, Tourmaline North Buoy, Puerto Rico, 18°10' 31"N, 67°19' 38"W, 29. 0 4. 2012, 52 m, MGAB CUM 1703; 1 immature ♀, east St. John, 18°13'18"N, 64°40'33"W, 8.05.2012, 24– 30 m, MGAB CUM 1704; 1 immature ♀, St. Croix, 17°50' 03"N, 64° 28'33"W, 4. 0 5. 2012, 68 m, MGAB CUM 1705; 2 immature ♀♀, Lang Bank, St. Croix, 17°50' 03"N, 64° 28'33"W 55 m, 6. 0 5. 2012, MGAB CUM 1706; 5 manca, east St. John, 8. 0 5. 2012, 53 m, MGAB CUM 1707; 1 manca, Cane Bay, St. Croix, 17°6'26" N, 64°48'50" W, 60 m, 30. 0 4. 2011, MGAB CUM 1698. GPS coordinates for these locations are provided in Sherman et al. (2013).
Diagnosis. Elongated body, female with double spiny keel. Pereopod 1 basis with 2 stout long setae on medial margin. Uropodal peduncle as long as exopod, endopod with 2 articles, proximal longer.
Immature female
Description. A detailed description can be found in Sars (1879) and Petrescu (2002).
Body (Fig. 4 A) size: 2.75 mm.
Carapace (Fig. 4 A, B). Antenna 1 (Fig. 4 C) and labium (Fig. 4 D) as drawn in respective figures.
Mandible (Fig. 4 E). Pars incisiva with four teeth and robust pars molaris.
Maxilla 1 (Fig. 4 F). Outer endite with five simple setae and three serrate ones, inner endite with five setae, palpus with two unequal filaments.
Maxilla 2 (Fig. 4 G). Apical ending articles with simple and pectinated curved setae, simple, pappose and pectinated ones on top of protopod, numerous simple stout setae on medial margin.
Maxilliped 1 (Fig. 4 H). Several hand-like setae on medial margin of carpus.
Maxilliped 2 (Fig. 5 A). In present collections, the immature female specimens with short merus, with 1 plumose seta on medial margin, carpus with 2 pappose setae on outer margin, propodus with 3 pappose setae on medial margin, dactylus with a strong terminal seta.
Maxilliped 3 (Fig. 5 B). Basis with setules on proximal half and plumose setae on distal serrate one.
Pereopod 1 (Fig. 5 C). Basis 0.45 times rest of articles combined length, 10 simple short setae and 2 stout longer ones on medial margin, merus 2.18 times ischium length, 1 simple seta on medial margin of ischium, 1 seta on each margin of merus, serrate medial margin, carpus 1.70 times merus length, serrate medial margin, 2 medial setae and 1 outer seta, propodus 1.18 times carpus length, 4 simple setae on medial margin, 3 on outer one, dactylus 0.66 times propodus length, 2 simple setae on both margins, 5 subterminal setae and 1 stout terminal seta; small exopod.
Pereopod 2 (Fig. 5 D). Basis 0.63 times rest of articles of articles combined length, 4 simple setae and 1 stout one on medial margin, 1 simple seta on outer margin, merus 2.50 times ischium length, 1 simple and 1 stout seta on medial margin of ischium, 2 simple setae on medial margin and 1 on outer one, carpus as long as merus, 3 simple setae on medial margin, 1 on outer one, dactylus 3 times as long as propodus, 1 seta on medial margin of propodus, 4 on medial margin of dactylus, 2 on outer one, 4 subterminal setae and 1 terminal 0.73 times dactylus length; small exopod.
Pereopod 3 (Fig. 5 E). Basis 1.13 times as long as rest of articles combined length, 2 simple setae on medial margin, merus as long as ischium, 2 simple setae on merus, carpus 1.33 times merus length, 3 simple setae and 2 annulate ones, propodus 0.62 times carpus length, 1 annulate seta on medial margin, dactylus 0.8 times propodus length; slender exopod.
Pereopods 4 and 5 (Fig. 5 F, G). Very similar to those in Sars (1879) and Petrescu (2002).
Uropod (Fig. 5 H). Uropodal peduncle 0.91 times pleonite 6 length, 0.84 times endopod length, 6 setae on medial margin, exopod 0.86 times endopod length, distal article 2 times as long as proximal one, 2 simple setae on outer margin, 3 on medial one, terminal stout seta 0.9 times distal article of exopod, distal article of endopod 0.66 times proximal article length, 6 setae on medial margin of proximal article, 2 setae on distal one, terminal stout seta 1.1 times distal article length.
Remarks. Maxilliped 3 basis with setules on proximal half, not plumose setae like in Sars, 1879 and Petrescu, 2002 and plumose setae on whole margin similar to Gamô, 1962 and Kang & Lee, 1995, propodus with characteristic two setae backwardly projected (absent in Kang & Lee, 1995 and Petrescu, 2002). Pereopod 1 with longer dactylus than in Petrescu (2002). Pereopod 2 with fewer setae on dactylus than in Sars’ specimens, but with more setae than in Belizean specimens. Pereopod 3 with fewer setae than in Sars' (1879) description. Pereopods 4 and 5 without the plumose setae of the Atlantic specimens. Specimens from Puerto Rico with segment 6 of pleon longer than in European specimens, uropodal peduncle also longer than females from Atlantic and Belize and longer exopod than in Sars and Petrescu (op. cit.); peduncle and rami with fewer setae than in females from Atlantic and Belize.
Distribution. Initially described from the Atlantic waters of Europe (Bate, 1858, Jones, 1976), but also from the Mediterranean Sea (Sars, 1879), South Africa (Day, 1975), SE Asia, Annam, Fage, 1951), Japan (Gamô. 1962, 1967), Korea (Kang & Lee, 1995), Indonesia (Petrescu, 1997). The species was first mentioned from the western Atlantic by Calman (1907) from Cruz Bay, St. Jan (Danish West Indies), 6/1/96, about 20 specimens, all males. Other reports from the western Atlantic are from Belize (Petrescu, 2002, females) and Exuma Islands (Bahamas) (Petrescu, 2003, males and females).
description: Published as part of Petrescu, Iorgu, Chatterjee, Tapas & Schizas, Nikolaos V., 2014, New records of Bodotriidae (Crustacea: Cumacea) from Puerto Rico with descriptions of three new species, pp. 526-540 in Zootaxa 3873 (5) on pages 533-536, DOI: 10.11646/zootaxa.3873.5.4, http://zenodo.org/record/226432