Colsyrnola is a small genus of minute sea snails or marine gastropod mollusks within the subfamily Syrnolinae, which is a part of the family Pyramidellidae. They have bilateral symmetry, and only have endoderm and ectoderm tissues. The species of this genus are ectoparasites on other invertebrates.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0