imuroida

Imuroida is a genus of freshwater gastropods described in 2023 by researchers at the Institute of Biodiversity Studies. It is currently monotypic, represented by the species Imuroida aquatica. The name is derived from Latin imus, meaning "lowest," and the suffix -oidea, reflecting the genus’s adaptation to low-flow river habitats.

Adult specimens measure about 5–6 mm in height. The shell is planispiral and rounded, with 4–5 whorls, a pale brown coloration, and a subtle iridescence. The aperture is relatively large for the shell size. The animal has a broad foot and a delicate mantle, with a distinctive radular tooth arrangement that helps distinguish it from related planorbids.

Imuroida aquatica is known from a restricted river system in the central Amazon basin, where it inhabits quiet to moderately flowing riffle areas among leaf litter and rocky substrata. It tolerates moderate sedimentation and can be found on surfaces coated with biofilm.

The species is a detritivore that grazes on periphyton. It is primarily nocturnal or active during overcast conditions and contributes to nutrient cycling in its stream ecosystem.

Molecular data place Imuroida within a broader group of small planorbids, with morphological traits supporting its status as a distinct genus. The species has a limited range and faces threats from deforestation, mining, and water pollution; current assessments list its conservation status as Data Deficient.

Note: imuroida is a fictional genus created for this article.