Aegistohadra roemeri

Aegistohadra roemeri
Aegistohadra roemeri holotype shell. Scale bar is 10 mm.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Stylommatophora
Family:	Camaenidae
Genus:	Aegistohadra
Species:	A. roemeri
Binomial name
Aegistohadra roemeri (L. Pfeiffer, 1863)
Synonyms
Amphidromus (Syndromus) roemeri(L. Pfeiffer, 1863) superseded combination Amphidromus (Syndromus) xiengkhaungensisInkhavilay & Panha, 2017 junior subjective synonym Amphidromus roemeri(L. Pfeiffer, 1863) superseded combination Amphidromus xiengkhaungensisInkhavilay & Panha, 2017 junior subjective synonym Bulimus roemeriL. Pfeiffer, 1863 superseded combination (original combination)

Aegistohadra roemeri is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Camaenidae. ^[1]

It has been described according to empty shells only.

Description

The length of the shell attains 23.5 mm, its diameter 13.5 mm.

(Original description in Latin) The sinistral shell is perforate, and ovate-conical. It appears somewhat solid and lightly striate, and exhibiting a decussately patterned surface under a lens due to very close spiral striae. Its color is flesh-colored, with a pale band at the suture. The spire is conical, with a rather acute apex. Comprising six scarcely convex whorls, the body whorl almost equals the spire and appears somewhat angled below the middle, displaying two reddish-brown bands and a rounded base. The aperture is oblique and ear-shaped; the peristome is simple, with the outer margin shortly expanded and the columellar margin somewhat vertical, dilated above, and arch-like reflected. ^[2]

Distribution

Distribution of Aegistohadra roemeri include Phou Kout District within Xiangkhouang Province in Laos and Cambodia.

References

1. "Aegistohadra roemeri (L. Pfeiffer, 1863)". WoRMS. World Register of Marine Species . Retrieved 17 May 2025.
2. Pfeiffer, L. (1863). "Descriptions of thirty-six new land shells, from the collection of H. Cuming, Esq". Proceedings of the Zoological Society of London. 30 (17–18): 274. This article incorporates text from this source, which is in the public domain .

• Wang, Y.-C. [Yung-Ching]. (2022). Evaluative notes on the systematics of the “Amphidromus” pervariabilis-complex and the “Amphidromus” roemeri-complex (Gastropoda: Stylommatophora: Camaenidae). Folia Conchyliologica. 66: 25-32.
• Lee, H. G. (2022). Aenigmatic Aegistohadra Part 2 (conclusion) -or- An account of a pretty astounding clade of sinistral and enantiomorphic land snail taxa. Shell-O-Gram. 63(4): 3-10.

External links

• Inkhavilay, Khamla; Sutcharit, Chirasak; Panha, Somsak (2017-06-13). "Taxonomic review of the tree snail genus Amphidromus Albers, 1850 (Pulmonata: Camaenidae) in Laos, with the description of two new species". European Journal of Taxonomy (330). doi: 10.5852/ejt.2017.330 . ISSN   2118-9773 . Retrieved 2017-07-08.
• Jirapatrasilp, P.; Huang, C.-W.; Hwang, C.-C.; Sutcharit, C.; Lee, C.-T. ( (2022). "Convergent evolution of Amphidromus-like colourful arboreal snails and phylogenetic relationship of East Asian camaenids, with description of a new Aegistohadra species (Helicoidei: Camaenidae: Bradybaeninae)" . Invertebrate Systematics. 36 (3): 244–290. doi:10.1071/is21015.