Paropeas swettenhami ( de Morgan, 1885 )

Man, Nem Sian, Ablett, Jonathan D., Lwin, Ngwe, Sutcharit, Chirasak & Panha, Somsak, 2024, Contributions on a small collection of the former Subulinidae Fischer & Crosse, 1877 (Eupulmonata, Achatinoidea) with catalogue of the Glessula and Rishetia species recorded from Myanmar, ZooKeys 1208, pp. 173-239 : 173-239

publication ID

https://doi.org/ 10.3897/zookeys.1208.116083

publication LSID

lsid:zoobank.org:pub:0215503D-E8B4-4179-89F6-FB2CCC59F37E

DOI

https://doi.org/10.5281/zenodo.13137138

persistent identifier

https://treatment.plazi.org/id/01940F4C-74CD-58B5-8013-0427ECF65D0B

treatment provided by

ZooKeys by Pensoft

scientific name

Paropeas swettenhami ( de Morgan, 1885 )
status

 

23 Paropeas swettenhami ( de Morgan, 1885)

Fig. 12 D View Figure 12

Stenogyra swettenhami de Morgan, 1885: 389, pl. 6, fig. 6. Type locality: G. Tchöra, près ďIpoh (Kinta) [Gunung Cheroh, Ipoh, Perak State, Malaysia]. View in CoL

Prosopeas swettenhami View in CoL — Pilsbry 1906: 32, pl. 4, figs 11, 12. Laidlaw 1933: 216.

Paropeas swettenhami View in CoL — Naggs 1994: 188.

Type specimen.

Syntype MNHN - IM- 2000-38930 (1 shell; Fig. 12 D View Figure 12 ) from Malacca, G. Tchéhèl.

Diagnosis.

Shell slender, elongate turreted and rapidly attenuated; apex pointed; subsequent whorls coarse with dense and fine radial striae. Suture wide and shallow, and whorls flattened. Aperture elongate ovate; columella concave.

Distribution.

This species has been reported from Malaysia and Shan State, Myanmar ( Naggs 1994).

Remarks.

de Morgan (1885) describes P. swettenhami and P. tchehelense consecutively in the same publication and from a very close geographical area within Perak State, Peninsular Malaysia. Then von Möllendorff (1891: 337) suggests ‘ Stenogyra swettenhami de Morgan, 1885 ’ as a slight variation of P. tchehelense ; therefore, some subsequent authors recognise the former as a synonym of the latter (i. e., Maassen 2001; MolluscaBase 2023). In contrast, Pilsbry (1906: 32) argues that they differ in shell shape and structure. We have examined the syntypes of both species and agree with Pilsbry (1906) that P. swettenhami (Fig. 12 D View Figure 12 ) differs from P. tchehelense by having a slimmer shell, narrower aperture, cylindrical and rounded embryonic whorls. Prosopeas tchehelense (Fig. 12 E View Figure 12 ) possesses a large, broad shell, wide aperture, convex, and rounded embryonic whorls.

No new materials of this species were found in this survey, and the type specimen is illustrated herein. Naggs (1994) provisionally reported the occurrence of P. swettenhami from Shan State, Myanmar. Considering the vast geographical distance between Perak and Shan State, it may be that the specimens Naggs (1994) regarded as P. swettenhami are, in fact, P. terebralis or another species. However, collecting topotypical material from Shan State, Myanmar, is necessary to confirm the existence of this species in Myanmar and the systematic relationship with P. tchehelense .

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Subulinidae

Genus

Paropeas

Loc

Paropeas swettenhami ( de Morgan, 1885 )

Man, Nem Sian, Ablett, Jonathan D., Lwin, Ngwe, Sutcharit, Chirasak & Panha, Somsak 2024
2024
Loc

Paropeas swettenhami

Naggs F 1994: 188
1994
Loc

Prosopeas swettenhami

Laidlaw FF 1933: 216
Pilsbry HA 1906: 32
1906
Loc

Stenogyra swettenhami

de Morgan J 1885: 389
1885