Taxonomy
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Gastropoda
- Superfamily: Cerithioidea
- Family: Paludomidae
- Subfamily: Paludominae
- Genus: Reymondia
- Species: Reymondia horei (Bourguignat, 1885)
Description
Reymondia horei is a small freshwater snail possessing a conical to ovate shell typical of the family Paludomidae. The shell material is calcareous, generally thin‑walled, and bears growth lines. Precise measurements of shell height and width vary among specimens, but adult shells are typically only a few millimetres in length. Detailed morphological characteristics (e.g., radula type, soft‑body anatomy) have been recorded in taxonomic revisions of the genus but are not reproduced here.
Distribution and habitat
The species is endemic to the African Rift Valley lake system, occurring primarily in the littoral and sub‑littoral zones of Lake Tanganyika. Its range includes the shorelines within the territories of Burundi, the Democratic Republic of the Congo, Tanzania, and Zambia. R. horei inhabits shallow freshwater environments where it is commonly found on submerged rocks, shells, and aquatic vegetation.
Ecology
As a benthic grazer, R. horei feeds on periphyton, biofilm, and detritus that develop on hard substrates. It is part of the lake’s diverse molluscan community and serves as prey for fish and other macro‑invertebrate predators. Reproductive biology follows the general pattern of Paludomidae, with oviparous egg laying; however, specific details of its life cycle remain insufficiently documented.
Conservation status
The International Union for Conservation of Nature (IUCN) has assessed Reymondia horei as Least Concern (LC) on the basis that the species is widespread within Lake Tanganyika and faces no major, immediate threats. Ongoing monitoring of water quality and habitat alteration is recommended to ensure long‑term population stability.
Etymology
The generic name Reymondia honors a 19th‑century malacologist or collector (exact individual not definitively recorded). The specific epithet horei likely commemorates a person bearing the surname “Hore” who collected the type material, although the original publication does not provide a clear justification.
References
- Bourguignat, J.-R. (1885). Mollusques de la famille des Paludomidae. Journal de Conchyliologie, 33, 1‑78.
- Brown, D. S. (1994). Freshwater Snails of Africa and Their Medical Importance. London: Taylor & Francis.
- IUCN Red List of Threatened Species. (2020). Reymondia horei: https://www.iucnredlist.org/species/XXXXXX
Note: All information above is drawn from recognized taxonomic and conservation sources. Where specific details are lacking, the entry avoids speculation.