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Table 1 in New species of Georissa (Gastropoda: Hydrocenidae) and Acmella (Gastropoda: Assimineidae), with new records of Georissa from Northeast India
Authors/Creators
- 1. SM Sehgal Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064, India. & Manipal Academy of Higher Education (MAHE), Madhav Nagar, Manipal, Udupi 576104, India. & Department of Zoology, Kamrup College, Chamata, Nalbari, 781306, Assam, India.
- 2. SM Sehgal Foundation Centre for Biodiversity and Conservation, Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Sriramapura, Jakkur PO, Bangalore 560064, India. & Manipal Academy of Higher Education (MAHE), Madhav Nagar, Manipal, Udupi 576104, India. & Yenepoya Research Centre, Yenepoya (Deemed to be University), University Road, Derlakatte, Mangalore 575018, India.
Description
Table 1 (continued). Comparison of conchological characters of all species of Georissa W.T. Blanford, 1864 from India and Myanmar (adopted from Das & Aravind 2021).
| Characters | G. meghalayaensis sp. nov. | Georissa sp. | G. mawsmaiensis Das & Aravind, 2021 | G. saritta W.H. Benson, 1851 | G. liratula Stoliczka, 1871 | G. illex W.H. Benson, 1856 | G. pyxis W.H. Benson, 1856 | G. fraterna Theobald & Stoliczka, 1872 | G. frustrillum W.H. Benson, 1860 | G. rawesiana W.H. Benson, 1860 | G. blanfordiana Stoliczka, 1871 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Peristome | simple, thin and continuous | simple, thin and continuous | simple and slightly thickened | simple, sharp, slightly expanded, margins separate | simple, curve, within grooved, thick, whitish | thin, non- continuous, margins joined, right margin straight, sharp, columellar margin reflexed | thin, sharp, non-continuous | simple, slightly receding in front, provided with somewhat thickened inner margin | thin, non- continuous | thin, parietal margin callous, inside straight, narrow | uniformly curved, angled at posterior (or upper) side, very slightly arched, slightly expanded above, below constricted |
| Operculum | oval, calcareous, multispiral with growth lines | unknown | paucispiral, has calcareous peg emerged from inner surface | unknown | testaceous, thin, transparent, broadly semilunar, with eccentric nucleus, covered externally with wrinkled growth-striae | thin, horny, transparent, paucispiral, with a basal nucleus | unknown | testaceous,, thin, almost transparent, paucispiral | unknown | unknown | unknown |
| Habitat | moss, at cave entrance | soil-leaf litter near waterfall | wet walls of inside cave | on mossy tree trunks | – | adhering to stones | – | – | – | near caves | near caves |
| Distribution | Krem Puri, Meghalaya, India | Sadu Chiru waterfalls, Manipur, India | Mawsmai cave, Meghalaya, India | Cherra Poonjee (present Cherrapunjee), Khasi hills, Meghalaya, India; Tuipui, Champhai district, Mizoram, India (Present study) | Damotha, near Moulmein, Myanmar | Phie Than, Tenasserim, Myanmar | Thyet-Mio, Myanmar | Ataran River Valley, near Moulmein, Myanmar | Ava, Myanmar | Near Moulmein in Farm Caves, Myanmar | Farm Caves, near Moulmein, Myanmar |
Notes
Published as part of Das, Nipu Kumar & Aravind, Neelavar Ananthram, 2026, New species of Georissa (Gastropoda: Hydrocenidae) and Acmella (Gastropoda: Assimineidae), with new records of Georissa from Northeast India, pp. 11 in European Journal of Taxonomy 1060 on page 11, DOI: 10.5852/ejt.2026.1060.3284, http://zenodo.org/record/20411389
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- Is part of
- Journal article: 10.5852/ejt.2026.1060.3284 (DOI)
- Journal article: urn:lsid:plazi.org:pub:FFB1FF91FFB7731C4541FF8CFF8DAA2B (LSID)
- Journal article: http://publication.plazi.org/id/FFB1FF91FFB7731C4541FF8CFF8DAA2B (URL)
- Journal article: http://zenodo.org/record/20411389 (URL)
- Journal article: http://zoobank.org/11771353-21AA-43E9-946B-A85705595962 (URL)
References
- Blanford W. T. 1864. On the classification of the Cyclostomacea of eastern Asia. Annals and Magazine of Natural History, Series 3 13 (78): 441-465. Available from https://www.biodiversitylibrary.org/page/22217703 [accessed 4 Apr. 2026].
- Das N. K. & Aravind N. A. 2021. A new species from the genus Georissa Blanford, 1864 (Gastropoda, Neritimorpha, Hydrocenidae) from a limestone cave of Meghalaya, Northeast India. Journal of Conchology 44 (2): 93-101.
- Stoliczka F. 1871. Notes on terrestrial Mollusca from the neighbourhood of Moulmein (Tenasserim Provinces), with descriptions of new species. Journal of the Asiatic Society of Bengal, Part II 40 (2): 143-177. Available from https://biodiversitylibrary.org/page/35630965 [accessed 4 Apr. 2026].
- Benson W. H. 1856. Characters of seventeen new forms of the Cyclostomacea from the British Provinces of Burmah, collected by W. Theobald, jun., Esq. Annals and Magazine of Natural History, Series 2 17 (99): 225 - 228 [1 March]; 17 (100): 229-233 [1 April]. Available from https://biodiversitylibrary.org/page/22069820 [accessed 4 Apr. 2026].
- Theobald W. & Stoliczka F. 1872. Notes on Barmese and Arakanese land shells, with descriptions of a few species. Journal of the Asiatic Society of Bengal 41 (2): 329-334. Available from https://www.biodiversitylibrary.org/page/37138045 [accessed 4 Apr. 2026].
- Benson W. H. 1860. Characters of new land-shells from Burmah and the Andamans. Annals and Magazine of Natural History, Series 3 6 (33): 190-195. Available from https://www.biodiversitylibrary.org/page/2267380 [accessed 4 Apr. 2026].