Caecum debile Verrill & Bush, 1900

Egger, Christina, Neusser, Timea P., Norenburg, Jon, Leasi, Francesca, Buge, Barbara, Vannozzi, Angelo, Cunha, Regina L., Cox, Cymon J. & Joerger, Katharina M., 2020, Uncovering the shell game with barcodes: diversity of meiofaunal Caecidae snails (Truncatelloidea, Caenogastropoda) from Central America, ZooKeys 968, pp. 1-42 : 1

publication ID

https://dx.doi.org/10.3897/zookeys.968.52986

publication LSID

lsid:zoobank.org:pub:4296306E-51B9-4873-AB6F-4B475194CA98

persistent identifier

https://treatment.plazi.org/id/4879A9EF-1349-5BBA-AD5B-3F392EB24411

treatment provided by

ZooKeys by Pensoft

scientific name

Caecum debile Verrill & Bush, 1900
status

 

Caecum debile Verrill & Bush, 1900

Caecum debile Verrill & Bush, 1900: 538. Type locality: Bermuda, Ship Channel and Bailey Bay, in 12 to 40 feet.

Material examined.

French Antilles • 1 (Fig. 6J-M View Figure 6 ); Guadeloupe; 16.3558, -61.5965; depth 2 m; 24 May 2012; MNHN KARUBENTHOS exped.; Stat. GS32 GenBank: MT704295, MT731711; MNHN-IM-2019-27a. • 1; same collection data as for preceding; GenBank: MT704296, MT731712; MNHN-IM-2019-27b.

Shell morphology.

Color whitish, slightly translucent. Specimens about 2.0 mm long, 0.5 mm wide. Tube of adult specimen 2.1 mm long, 0.5 mm wide. Tube evenly curved and evenly wide over entire length (Fig. 6J, K View Figure 6 ). Septum separated by sharp rim from tube and hemispherical without protruding mucro (Fig. 6L View Figure 6 ). Aperture with protruding ring. Shell structured by longitudinal striae clearly observable via LM. Microsculpture of fine wavy striation (Fig. 6M View Figure 6 ).

Remarks.

The present specimens were assigned to C. debile based on the characteristic microsculpture (see Absalão and Gomes 2001). Morphologically, C. debile might present a synonym of C. infimum , de Folin, 1867 (de Folin and Périer 1867: 26, pl.3, fig. 2) but, in awareness of cryptic species we refrain from synonymizing until C. infimum from the type locality is available for molecular analyses. Some species delineation analyses, separate C. debile into two independent species (Fig. 4 View Figure 4 ), which might indicate a putative speciation, but more data on the genetic variability is needed to exclude the presence of an artefact in analyses.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Littorinimorpha

Family

Caecidae

Genus

Caecum

Loc

Caecum debile Verrill & Bush, 1900

Egger, Christina, Neusser, Timea P., Norenburg, Jon, Leasi, Francesca, Buge, Barbara, Vannozzi, Angelo, Cunha, Regina L., Cox, Cymon J. & Joerger, Katharina M. 2020
2020
Loc

Caecum debile

Verrill & Bush 1900
1900