Gadila simpsoni (Henderson, 1920) Henderson, 1920

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 : 40-41

publication ID

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

publication LSID

lsid:zoobank.org:pub:DD06702D-A18D-4323-9CAE-D8F315FCCCC7

DOI

http://doi.org/10.5281/zenodo.6258457

persistent identifier

http://treatment.plazi.org/id/CC6E8784-FFDD-FF90-FF54-FBB0FB64D6D1

treatment provided by

Plazi

scientific name

Gadila simpsoni (Henderson, 1920)
status

n. comb.

Gadila simpsoni (Henderson, 1920)   n. comb.

Figs. 81–83 View FIGURES 74 – 89

+ Cadulus (Platyschides) simpsoni Henderson 1920: 127   , pl. 19, fig. 17. + Cadulus simpsoni: Steiner and Kabat 2001: 441   ; 2004: 644.

Type material

Holotype USNM 161580; Paratypes USNM 314677, 1 dd, USNM 314932, 1 dd, AMNH 148357, 1 dd.

Type locality

Mayaguez Roadstead, Porto Rico, USBF sta 6062, 46 m (by original designation).

Diagnosis

Shell medium (to 6 mm), slender, translucent cream­white, slightly curved, maximum diameter close to equator. Ventral side regularly curved; dorsal one almost straight except for some curvature at posterior end and a gently convexity at the equator. Apex simple, sligthlty dorsoventrally depressed, showing central denticle­like at inner side of ventral edge. Preapical callus thin, lumen suboval. Oral aperture simple, strongly oblique, slightly contracted, laterally compressed.

Material examined

Holotype of Gadila simpsoni   ; IBUFRJ 14315, sta A 3, 3 dd; IBUFRJ 14316, sta C 13, 13 dd; IBUFRJ 14317, sta R 4 # 1, 21 dd; MNHN, sta 25 A, 3 dd; IBUFRJ 14318, Jops II, sta 3216, 21 º 37 ’S, 40 º08’W, 300 m, 7 dd.

Distribution

Antigua: off English Harbor; Porto Rico; Cuba (Henderson 1920); Brazil: Bahia, Espírito Santo, Rio de Janeiro (this study). Shells 46 to 575m (Henderson 1920).

Remarks

Gadila simpsoni   is smaller and less arched than G. pandionis   and the aperture of G. simpsoni   is laterally compressed. Steiner and Kabat (2004) placed this species in Cadulus   because of the position of the region of the maximum diameter of the shell which, according to these authors, is located in the middle of the shell. However, in his original description, Henderson (1920: 127) stated that "its equator at about the anterior two­fifths or almost median" and the observation of our material agree with Henderson’s opinion. So, we include this species in the genus Gadila   .

USNM

Smithsonian Institution, National Museum of Natural History

AMNH

American Museum of Natural History

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Mollusca

Class

Scaphopoda

Order

Gadilida

Family

Gadilidae

Genus

Gadila

Loc

Gadila simpsoni (Henderson, 1920)

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

Cadulus simpsoni:

Steiner and Kabat 2001: 441
2001
Loc

Cadulus (Platyschides) simpsoni

Henderson 1920: 127
1920