Bathymophila euspira ( Dall, 1881 ),

Cavallari, Daniel C., Salvador, Rodrigo B., Dornellas, Ana P. S. & Simone, Luiz R. L., 2019, Calliostomatidae, Colloniidae, Margaritidae, and Solariellidae (Gastropoda: Trochoidea) collected by the Marion Dufresne (MD 55) expedition in southeastern Brazil, with description of a new sp, Zootaxa 4609 (3), pp. 401-428: 418

publication ID

https://doi.org/10.11646/zootaxa.4609.3.1

publication LSID

lsid:zoobank.org:pub:F38E6655-0EC4-48E1-A002-CAC599F3556D

persistent identifier

http://treatment.plazi.org/id/4A3387DC-FFAF-FFEA-FF6D-FCB99E7F935D

treatment provided by

Plazi

scientific name

Bathymophila euspira ( Dall, 1881 )
status

 

Bathymophila euspira ( Dall, 1881) 

( Fig. 7View FIGURE 7 G–L)

Synonymy see Quinn (1979). Complement:

Margarita euspira Dall, 1881: 44  .

Trochus euspira: Jeffreys, 1883: 98  , pl. 20, figs 6, 6a, 6b.

Margarites (Bathymophila) euspira: Quinn, 1979: 5  , figs 1–2.

Bathymophila euspira: Marshall, 1999: 20  .

Margarites euspira: Rosenberg et al., 2009: 624  ; Welch, 2010: table S1.

Margarites euspirus: Miloslavich et al., 2010  : table S6.

Type material. Unknown ( Quinn 1979).

Type locality. Cuba, off Havana, Blake sta. 2, 23º14’N, 82º25’W, 1472 mGoogleMaps  .

Previously known distribution. Portugal, Gulf of Mexico, Caribbean Sea, live specimens from 713–1472 m ( Rosenberg et al., 2009).

New occurrence. Southwestern Atlantic, Brazil, off Espírito Santo, Abrolhos Slope.

Habitat. Coralline and muddy bottoms.

Material examined. Brazil: Espírito Santo: off São Mateus, Abrolhos Slope , 19°00’S, 37°48’W, 950–1050 m, MNHN, 2 sh; 19°40’S, 37°48’W, MD55 sta. CB77, 790– 940 m, MNHN, 1 sh (27/v/1987)GoogleMaps  .

Measurements. 4½ whorls, H=4.0 mm, D= 4.1 mm (largest specimen).

Remarks. The diagnostic spiral sculpture pattern of the early whorls, as well as the overall shell shape and proportions and the large circular aperture, is consistent with Bathymophila euspira  . The holotype of this species could not be located. However, topotypes and the syntypes of the variety (and synonym) B. euspira nitens Dall, 1881  (USNM 214275, from off Portugal), alongside the redescription of Quinn (1979), support the identification of the present specimens. Bathymophila euspira  is known for its considerable conchological variation, from completely smooth specimens to a variable number of fine spiral striae and having a subsutural spiny spiral thread ( Quinn 1979). The present specimens lack the subsutural spiral thread and are almost completely smooth ( Fig. 7 G, JView FIGURE 7), counting with circa 8 very fine spiral striae on the base of the whorl, circling the umbilicus ( Fig. 7 I, JView FIGURE 7). Moreover, the present specimens have narrower shells than the typical B. euspira  . The present record greatly extends the species range ca. 6,900 km to the southeast, which is relatively common for the MD55 material (e.g., Calliostoma echinatum  , above).

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Family

Solariellidae

Genus

Bathymophila

Loc

Bathymophila euspira ( Dall, 1881 )

Cavallari, Daniel C., Salvador, Rodrigo B., Dornellas, Ana P. S. & Simone, Luiz R. L. 2019
2019
Loc

Margarites euspira:

Rosenberg, G. & Moretzsohn, F. & Garcia, E. F. 2009: 624
2009
Loc

Bathymophila euspira: Marshall, 1999 : 20

Marshall, B. A. 1999: 20
1999
Loc

Margarites (Bathymophila) euspira:

Quinn J. F. Jr. 1979: 5
1979
Loc

Trochus euspira:

Jeffreys, J. G. 1883: 98
1883
Loc

Margarita euspira

Dall, W. H. 1881: 44
1881