Glessula ponsiensis Godwin-Austen, 1920

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.13137124

persistent identifier

https://treatment.plazi.org/id/76E4022A-8AEF-5B1D-BF5C-3AC31C442CA9

treatment provided by

ZooKeys by Pensoft

scientific name

Glessula ponsiensis Godwin-Austen, 1920
status

 

18 Glessula ponsiensis Godwin-Austen, 1920

Figs 10 F View Figure 10 , 11 A, B View Figure 11

Stenogyra (Glessula) pyramis var. major Nevill, 1878: 169 [nomen nudum]. Type locality: Ponsee. View in CoL

Glessula ponsiensis View in CoL — Godwin-Austen, 1920: 56, pl. 164, fig. 19. Type locality: Ponsee, Yunnan.

Type specimens.

Syntypes NHMUK 1989042 (1 shell; Fig. 10 F View Figure 10 ) and NHMUK 1989043 (3 shells; Fig. 11 A View Figure 11 ), both specimen lots collected by J. Anderson from Ponsee.

Other material.

NHMUK 1912.4. 16.747 (2 shells; Fig. 11 B View Figure 11 ) ex. Beddome collection from Ponsee, Yunnan.

Diagnosis.

Shell oblong turreted and regularly attenuated; spire high conical; apex rounded and blunt; subsequent whorls nearly smooth with fine growth lines, and strong, equally spaced radial ridges near suture. Suture impressed and whorls slightly convex. Aperture ovate; columella strong, concave, and truncated.

Distribution.

Glessula ponsiensis was first described from Ponsee, Yunnan, and later discovered in Bhamao, Kachin State, situated on the upper part of Ayeyarwady River.

Remarks.

The original description included a set of shell measurements and an illustration of the apex. Godwin-Austen (1920: 56) clearly states that this species was described based on specimens from the Indian Museum collection (now Zoological Survey of India ( ZSI), Kolkata) collected by J. Anderson from Ponsee, which was misidentified as ‘ Stenogyra (Glessula) pyramis Bs. , var. major Nevill, 1878 ’. The name ‘ var. major ’ by Nevill (1878: 169) is unavailable ( ICZN 1999: Art. 12). Under the note of the species, Godwin-Austen states, ‘ I am fortunate in getting the type-shells for examination’. It seemed that he received on loan the type specimen (or specimens that were examined by Nevill (1878: 169 )). The NHMUK type collections contain a specimen lot with two registration numbers, M 10905 / 2 and 10906 / 2, which are ex-Indian Museum collection numbers where the original label states ‘ Stenogyra (Glessula) pyramis Benson , var. major ’, collection of ‘ Dr. J. Anderson’ and with collection locality from ‘ Ponsee’. Interestingly, a species-group name was struck through and rewritten with red ink by Godwin-Austen, handwritten as ‘ ponsiensis , G-A. ’ and with ‘ Type and three other one takes for B. M. ’. It is probable that these specimens were presented to Godwin-Austen for examination. The specimen NHMUK 1989042 (1 shell has blue wool inside the shell; Fig. 10 F View Figure 10 ) has a subsequent label stating ‘ holotype’, and NHMUK 1989043 (3 shells; Fig. 11 A View Figure 11 ) originates from the same Nevill type lot and has a subsequent label stating ‘ paratypes’. This is not a valid holotype designation ( ICZN 1999: Arts 73.1, 73.2 and Recommendation 73 F) and these specimens are considered as the syntypes, illustrated herein for the first time.

NHMUK

Natural History Museum, London

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Subulinidae

Genus

Glessula

Loc

Glessula ponsiensis Godwin-Austen, 1920

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

Glessula ponsiensis

Godwin-Austen HH 1920: 56
1920
Loc

Stenogyra (Glessula) pyramis var. major

Nevill G 1878: 169
1878