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A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean
No full textScarabino, Victor, Scarabino, Fabrizio (2010): A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean. Zoosystema 32 (3): 409-423, DOI: 10.5252/z2010n3a3, URL: http://www.bioone.org/doi/abs/10.5252/z2010n3a
Two new deep-sea muricids (Gastropoda) from Argentina
Full text linkTwo new species of muricids belonging in the genus Trophonare described from the upper slope off the Atlantic coast ofArgentina. Both species have a small size for the genus. Theradulae show similarities with those of Antarctic species of thesame genus. Trophon columbarioides new species has a smoothshell with spines pointed adapically and was collected at 37–38°S, in 209–382 m. Trophon fasciolarioides new species hasprominent spiral cords and was collected at Burwood Bank in286–292 m depth and off Bahía Blanca in ca. 1000 m depth.Fil: Pastorino, Roberto Santiago Guido. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Scarabino, Fabrizio. Ministerio de Educación y Cultura. Museo Nacional de Historia Natural; Urugua
FIG. 3. — A-D, Episiphon wallisi n in A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean
No full textFIG. 3. — A-D, Episiphon wallisi n. sp. holotype (6.5 mm), Wallis Island, 13°21'S, 176°08'W, 415-420 m (MUSORSTOM 7 stn DW 604); A, lateral view of shell; B, dorsal view of shell; C, frontal view of apex; D, sculpture at the posterior third of shell; E-G, Episiphon indefensum n. sp. holotype (7.9 mm), Solomon Islands, 8°47'S, 157°38'E, 762-1060 m (SALOMON 2 stn CP 2182); E, lateral view of shell; F, dorso-frontal view of apical area; G, sculpture at the middle of shell; H, I, Episiphon joanae n. sp. holotype (7 mm), Fiji, Ride de Lau, 18°43'S, 178°23'W, 392-407 m (BORDAU 1 stn DW 1469); H, lateral view of shell; I, latero-dorsal view of apical area; J, Episiphon joanae n. sp., radula, rachidian and lateral teeth; K, L, Episiphon lacteum n. sp. holotype (16 mm), Waterwitch Bank, Wallis Island, 12°31'S, 176°40'W, 275-295 m (MUSORSTOM 7 stn DW 538); K, lateral-dorsal view of apical area; L, lateral view of shell. Scale bars: F, G, I, K, 100 μm; J, 10 μm.Published as part of Scarabino, Victor & Scarabino, Fabrizio, 2010, A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean, pp. 409-423 in Zoosystema 32 (3) on page 417, DOI: 10.5252/z2010n3a3, http://zenodo.org/record/455436
First record of the exotic isopod Sphaeroma serratum (Crustacea: Isopoda) from Uruguayan waters (southwestern Atlantic)
Full text linkThe isopod Sphaeroma serratum (Fabricius, 1787) is reported from Uruguay for the first time and it is considered an introduced species in the region. The species was found very abundant and specimens were collected under the rocks in an intertidal area at La Paloma port in 2002 (34º39´S, 54º08´W). The specimens we examined fully agree with previous descriptions. Considering that this species has been reported as introduced in Argentina and Brazil, here we hypothesized the potential routes of introduction to Uruguay.Fil: Doti, Brenda Lía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Schwindt, Evangelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; ArgentinaFil: Scarabino, Fabrizio. Museo Nacional de Historia Natural; Uruguay. Dirección Nacional de Recursos Acuáticos; Urugua
Pantopoda Gerstacker 1863
No full textOrder Pantopoda Gerstäcker, 1863 Suborder Eupantopodida Fry, 1978Published as part of Scarabino, Fabrizio, Lucena, Rudá Amorim, Munilla, Tomás, Soler-Membrives, Anna, Ortega, Leonardo, Schwindt, Evangelina, López, Guzmán, María, José & Christoffersen, Martin Lidsey, 2019, Pycnogonida (Arthropoda) from Uruguayan waters (Southwest Atlantic): annotated checklist and biogeographic considerations, pp. 185-200 in Zootaxa 4550 (2) on page 187, DOI: 10.11646/zootaxa.4550.2.2, http://zenodo.org/record/262524
FIGURE 1 in Pycnogonida (Arthropoda) from Uruguayan waters (Southwest Atlantic): annotated checklist and biogeographic considerations
No full textFIGURE 1. Uruguayan Economic Exclusive Zone (URY EEZ), indicating the position of the stations of HMS Challenger (circle), RV Atlantis II (triangle) and RV Ƒema (square).Published as part of Scarabino, Fabrizio, Lucena, Rudá Amorim, Munilla, Tomás, Soler-Membrives, Anna, Ortega, Leonardo, Schwindt, Evangelina, López, Guzmán, María, José & Christoffersen, Martin Lidsey, 2019, Pycnogonida (Arthropoda) from Uruguayan waters (Southwest Atlantic): annotated checklist and biogeographic considerations, pp. 185-200 in Zootaxa 4550 (2) on page 187, DOI: 10.11646/zootaxa.4550.2.2, http://zenodo.org/record/262524
Episiphon wallisi Scarabino & Scarabino 2010, n. sp.
No full text<i>Episiphon wallisi</i> n. sp. (Fig. 3 A-D) <p> TYPE MATERIAL. — <b>Wallis Island.</b> MUSORSTOM 7, stn DW 604, 13°21’S, 176°08’W, 415-420 m, 1 lv holotype (MNHN 22784); 2 lv paratypes (MNHN 22785).</p> <p>TYPE LOCALITY. — Wallis Island, 13°21’S, 176°08’W, 415-420 m (MUSORSTOM 7, stn DW 604).</p> <p>ETYMOLOGY. — Named from the type locality.</p> <p> OTHER MATERIAL EXAMINED. — <b>Wallis Island.</b> MUS ORSTOM 7, stn DW 523, 13°12’S, 176°16’W, 455- 515 m 2 lv, 5 dd. — Stn DW 601, 13°19’S, 176°17’W, 350 m, 14 lv, 18 dd. — Stn DW 604, 13°21’S, 176°08’W, 415-420 m, 5 lv, 22 dd.</p> <p>DISTRIBUTION. — Wallis Island. Live at 350- 415 m.</p> <p>DESCRIPTION</p> <p>Shell 6.4 mm long, regularly curved with arc located at the centre of shell, slowly tapering, translucent white. Longitudinally sculptured with 24 fine primary striae and secondary ones on the posterior third. Apex simple, slightly dorsoventrally depressed, callus flat, lumen circular, central. Anterior aperture oblique, thin-walled, slightly depressed dorsoventrally.</p> <p>Measurements of holotype: L 6.4, W 0.57-0.54, w 0.4, arc 0.54 at 3.2 from apex.</p> <p>REMARKS</p> <p> See Remarks for <i>Episiphon joanae</i> n. sp. below.</p>Published as part of <i>Scarabino, Victor & Scarabino, Fabrizio, 2010, A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean, pp. 409-423 in Zoosystema 32 (3)</i> on page 416, DOI: 10.5252/z2010n3a3, <a href="http://zenodo.org/record/4554365">http://zenodo.org/record/4554365</a>
Annulipulsellum aenigmaticum Scarabino & Scarabino 2010, n. sp.
No full text<i>Annulipulsellum aenigmaticum</i> n. sp. (Fig. 4 F-H) <p> TYPE MATERIAL. — <b>Solomon Islands.</b> SALOMON 2, stn CP 2189, 08°20’S, 160°02’E, 660-854 m, 1 dd holotype (MNHN 22796); 3 dd paratypes (MNHN 22797).</p> <p>TYPE LOCALITY. — Solomon Islands, 08°20’S, 160°02’E, 660-854 m (SALOMON 2, stn CP 2189).</p> <p> ETYMOLOGY. — From the Latin <i>aenigmaticus</i> meaning “mysterious”.</p> <p> OTHER MATERIAL EXAMINED. — <b>Solomon Islands.</b> SALOMON 2, stn CP 2182, 08°47’S, 157°38’E, 762- 1060 m, 2 dd.</p> <p>DISTRIBUTION. — Solomon Islands. Shells in 762- 854 m.</p> <p>DESCRIPTION</p> <p>Shell 5.7 mm long, solid, well curved. Surface entirely sculptured by transverse encircling wrinkles crossed by 60 longitudinal striae. Section circular, apex simple, preapical callus thick, lumen circular and central.</p> <p>Measurements of holotype: L 5.7, W 0.7, w 0.3, arc 0.4 at 2.7 from apex.</p> <p>REMARKS</p> <p> The characteristic transversely wrinkled surface allies this species to <i>Annulipulsellum</i> Scarabino, 1986, a monotypic genus known from abyssal depths from the Atlantic Ocean, although the sectional outline of the wrinkles differs. However, the presence of longitudinal sculpture in the new species clearly distinguishes it from <i>A. euskadii</i> Scarabino, 1986, which only has the transverse sculpture, although the thick apical callus and lumen is also similar (see Scarabino 1986). Nevertheless, no other scaphopod reported in the literature or noted in the field by us, worldwide, has similar sculpture; we refer the present species to <i>Annulipulsellum</i>, pending the discovery of other related species that might permit modification of the generic diagnosis or creation of a new genus.</p>Published as part of <i>Scarabino, Victor & Scarabino, Fabrizio, 2010, A new genus and thirteen new species of Scaphopoda (Mollusca) from the tropical Pacific Ocean, pp. 409-423 in Zoosystema 32 (3)</i> on page 419, DOI: 10.5252/z2010n3a3, <a href="http://zenodo.org/record/4554365">http://zenodo.org/record/4554365</a>
Figure 1 in Presence of the Pink shrimp Farfantepenaeus brasiliensis (Latreille, 1817) in the coastal lagoons of Uruguay (Crustacea: Decapoda: Penaeoidea)
No full textFigure 1. Map of the study area, indicating the location where the specimens of Farfantepenaeus brasiliensis and F. paulensis were recorded. Yellow stars: sites where F. brasiliensis and F. paulensis specimens were initially recorded. Black star: only F. paulensis specimens were recorded. Red star: site where complete sampling and analyses of both species were carried out in April 2019. The location of the study area at the regional level is shown in the upper left inset.Published as part of <i>Silveira, Santiago, Fabiano, Graciela, Pereyra, Inés, Laporta, Martin, Scarabino, Fabrizio, Santana, Orlando, Márquez, Alejandro & Errico, Eugenia, 2022, Presence of the Pink shrimp Farfantepenaeus brasiliensis (Latreille, 1817) in the coastal lagoons of Uruguay (Crustacea: Decapoda: Penaeoidea), pp. 1-13 in Nauplius (e2022005) 30</i> on page 3, DOI: 10.1590/2358-2936e2022005, <a href="http://zenodo.org/record/10716654">http://zenodo.org/record/10716654</a>
Mactra guidoi n. sp. and Mactra patagonica (Bivalvia: Mactridae), two long misunderstood species from Southwestern Atlantic Ocean
No full textA common mactrid from the southwestern Atlantic Ocean has been largely misunderstood in the literature. Since the early 20th century, this species has been referred to as Mactra patagonica d'Orbigny, 1846. However, the latter is recorded in Quaternary deposits of Northern Patagonia. Mactra guidoi n. sp. is described herein, including its shell ultrastructure, hinge features, and soft parts, and compared with the holotype of M. patagonica. To compare and to correctly identify both species, a morphometric analysis was carried out using conventional and geometric morphometric methods. Mactra guidoi n. sp. has an elongate shell that is more fragile than that of M. patagonica. In addition, its ventral posterior edge is usually sinuous. The ultrastructure of the shell reveals two layers with cross lamellar structure. The anatomical features agree with those of the congeneric M. isabelleana, although they differ in the morphology of the labial palps and foot. Morphometric analysis revealed significant differences between M. patagonica and the new species. The relative warp analysis allows us to understand the variation recognized by using CVA. Only M. patagonica revealed significant allometry between Relative Warp and Centroid size. Finally, the comparison of the types clearly points towards the existence of two different species.Fil: Signorelli, Javier Hernan. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Scarabino, Fabrizio. Museo Nacional de Historia Natural y Antropologia; Urugua
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