Toledonia cf. perplexa Dall, 1902

Luca, Javier Di & Zelaya, Diego G., 2019, Gastropods from the Burdwood Bank (southwestern Atlantic): an overview of species diversity, Zootaxa 4544 (1), pp. 41-78: 67

publication ID

https://doi.org/10.11646/zootaxa.4544.1.2

publication LSID

lsid:zoobank.org:pub:211842AA-6C98-425B-9377-1AF0DC78C893

persistent identifier

http://treatment.plazi.org/id/03DA87AC-FFF1-FFAC-FF46-FE4AFB142A8D

treatment provided by

Plazi

scientific name

Toledonia cf. perplexa Dall, 1902
status

 

Toledonia cf. perplexa Dall, 1902  

Fig. 5M View FIGURE 5

Toledonia perplexa Dall, 1902: 513   ; Dell, 1990: 259, figs. 457–461 (synonymy)

Admete limneaeformis   (sic)— Melvill & Standen, 1912: 131 (non Smith, 1879)

Examined material. 6 an. and 11 sh. (MACN-In 40707); holotype (USNM 109022).

Description. Shell height to 2.5 mm (up to 4.1 mm according to Dall 1902); elongate-ovate, delicate. Protoconch of 1.5 slightly convex whorls. Teleoconch of up to 2 whorls, slightly convex in outline; last whorl comprising about 85% of total shell height. Suture deep, slightly channeled. Surface white; only sculptured with faint growth lines. Aperture ovate, interior white; columella with a strong fold, callus narrow, slightly expanded over the umbilical area.

Remarks. Based on the study of shell morphology, Dell (1990) concluded that Toledonia limnaeaeformis ( Smith, 1879)   and T. perplexa   are two different species, with only the latter present in Patagonian waters. The material studied here is similar to T. perplexa   , although differs by having a lower spire. The significance of such differences could not be determined given the poor current state of knowledge of the group.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Cephalaspidea

Family

Diaphanidae

Genus

Toledonia

Loc

Toledonia cf. perplexa Dall, 1902

Luca, Javier Di & Zelaya, Diego G. 2019
2019
Loc

Admete limneaeformis

Melvill, J. C. & Standen, R. 1912: 131
1912
Loc

Toledonia perplexa

Dell, R. K. 1990: 259
Dall, W. H. 1902: 513
1902