Gadila pocula (Dall, 1889) Dall, 1889

Caetano, Carlos Henrique Soares, Scarabino, Victor & Absalão, Ricardo Silva, 2006, Scaphopoda (Mollusca) from the Brazilian continental shelf and upper slope (13 º to 21 ºS) with descriptions of two new species of the genus Cadulus Philippi, 1844, Zootaxa 1267, pp. 1-47 : 41-42

publication ID

https://doi.org/ 10.5281/zenodo.173183

DOI

https://doi.org/10.5281/zenodo.6258459

persistent identifier

https://treatment.plazi.org/id/CC6E8784-FFD2-FF91-FF54-FBB0FA95D6D1

treatment provided by

Plazi

scientific name

Gadila pocula (Dall, 1889)
status

comb. nov.

Gadila pocula (Dall, 1889) View in CoL n.comb

Figs. 84–85 View FIGURES 74 – 89

+ Cadulus poculum Dall 1889: 429 View in CoL ; Abbott 1974: 390.

+ Cadulus (Gadila) poculum: Pilsbry and Sharp 1898: 172 View in CoL , pl. 33, figs. 56, 57. + Cadulus (Platyschides) poculum: Henderson 1920: 108 View in CoL , pl. 17, fig. 8. + Polyschides poculum: Steiner and Kabat 2001: 448 View in CoL ; 2004: 631.

Type material

Lectotype USNM 95374 (designated by Henderson, 1920: 109); Paralectotypes USNM 887461, 1 dd, MCZ 7743, 1 dd.

Type locality

off st. Vincent, West Indies, Blake sta 226, 13 º09’05"N, 61º16’20"W, 774 m (by subsequent designation).

Diagnosis

Shell medium size (to 11mm), slender, strongly curved posteriorly, solid, brilliant. E quator located at first forth, more notorious at ventral side where it is obtuse angled. Apex simple or with two flat lateral lobes, denticle­like structure at ventral edge. Pre­apical callous thick, lumen oval. Apical section dorsoventrally depressed; oral aperture oblique, strongly dorsoventrally depressed.

Material examined

IBUFRJ 14312, off Bacia de Campos, Rio de Janeiro, 22º26’28"S, 39º58’53"W, 1050 m, 1 dd.

Distribution

off St. Vincent (Dall 1889); off Yucatan bank (Henderson 1920); Brazil: Rio de Janeiro (this study). Shells 774 to 1173 m (Henderson 1920; this study).

Remarks

Steiner and Kabat (2001, 2004) placed this species at the genus Polyschides because of the position of the maximum diameter at anterior third of the shell, occurrence of apical lateral projections that, according to these authors, indicate four apical lobes, and the strongly oblique anterior aperture. Acccording to Steiner and Kabat (2004) this species could also be placed in Gadila . The specimen studied is well preserved and the carefull examination of the apical features shows only two lateral flat lobes and none ventral or dorsal projections. In this manner, we concluded that the studied species fits better to the concept of genus Gadila than Polyschides .

USNM

Smithsonian Institution, National Museum of Natural History

MCZ

Museum of Comparative Zoology

Kingdom

Animalia

Phylum

Mollusca

Class

Scaphopoda

Order

Gadilida

Family

Gadilidae

Genus

Gadila

Loc

Gadila pocula (Dall, 1889)

Caetano, Carlos Henrique Soares, Scarabino, Victor & Absalão, Ricardo Silva 2006
2006
Loc

Polyschides poculum:

Steiner and Kabat 2001: 448
2001
Loc

Cadulus (Platyschides) poculum:

Henderson 1920: 108
1920
Loc

Cadulus (Gadila) poculum:

Pilsbry and Sharp 1898: 172
1898
Loc

Cadulus poculum

Dall 1889: 429
1889
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