Caecum vertebrale Hedley, 1899

Walter, Angelo Vannozzi & Renda, Walter, 2024, Sampling the depth: New data on the Caecidae (Mollusca, Gastropoda) from northeastern Papua New Guinea, Zoosystema 46 (14), pp. 327-347 : 330

publication ID

https://doi.org/ 10.5252/zoosystema2024v46a14

publication LSID

lsid:zoobank.org:pub:23D972D0-F573-429C-816B-F42AFF02D0B1

DOI

https://doi.org/10.5281/zenodo.12548728

persistent identifier

https://treatment.plazi.org/id/038F87DD-FF82-FFEC-2295-FF2C3C22CB28

treatment provided by

Felipe

scientific name

Caecum vertebrale Hedley, 1899
status

 

Caecum vertebrale Hedley, 1899 View in CoL

( Fig. 2 View FIG E-H)

Caecum vertebrale Hedley, 1899: 425 View in CoL , fig. 15. — Vannozzi 2019b: 74 and synonymy therein.

TYPE MATERIAL. — Holotype. Tuvalu • sh; Funafuti Atoll; AMS n. C5917 .

TYPE LOCALITY. — Pacific Ocean, Tuvalu, Funafuti Atoll.

MATERIAL EXAMINED. — Papua New Guinea • 1 sh; Off Bougainville; 5°02’S, 154°29’E; 615-632 m depth; 13.X.2010; BIOPAPUA Stn DW3754; MNHN GoogleMaps 1 sh; New Ireland; 2°24’S, 149°55’E; 272-274 m depth; 6.IX.2014; KAVIENG 2014 Stn DW4495; MNHN GoogleMaps 1 sh; Bagabag Island ; 4°44’S, 146°12’E; 480-490 m depth; 5.XII.2012; PAPUA NIUGINI Stn DW3977; MNHN GoogleMaps .

DISTRIBUTION. — Philippines, northeastern PNG, Japan, New Caledonia, Loyalty, Vanuatu, Society, Tuvalu ( Hedley 1899; Pizzini et al. 2013; Hasegawa 2000; Vannozzi 2017, 2019b).

DIAGNOSIS. — Shell of average size for the genus, colourless, semitransparent. Protoconch unknown.Teleoconch tubular, arched, with strong collabral rings. Early teleoconch conical, smooth with rings gradually appearing and increasing in strength during the growth. Adult shell cylindrical, evenly arched. Sculpture of c. 25 strong, rounded rings. Aperture simple, edged by two paired rings. Septum dome-shaped without mucro, sometimes encrusted. Animal described by Vannozzi (2019b). Adult shell length c. 2.5 mm.

REMARKS

A few rather worn specimens were examined, all of them showing unusual septa. One of them shows a unique hemispherical mucro positioned in the middle of the septum. However, the other examined specimens show irregular shapes. Occasionally, the septum in C. vertebrale shows irregular shapes ( Pizzini et al. 2013: fig. 8K, M), therefore we attribute no specific value to the peculiar shape shown in Figure 2 View FIG E-H.

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Littorinimorpha

Family

Caecidae

Genus

Caecum

Loc

Caecum vertebrale Hedley, 1899

Walter, Angelo Vannozzi & Renda, Walter 2024
2024
Loc

Caecum vertebrale

VANNOZZI A. 2019: 74
HEDLEY C. 1899: 425
1899
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