This Intkey DELTA database is part of

Glasby C, Biriukova O, Martin P, Utevsky S, Wilson RS (2025) ANNiKEY: a taxonomic information system for Annelida, https://doi.org/10.5281/zenodo.13738486.

This is version 3, published 6 March 2025 (superseded versions 1 and 2 were not published)

An annelid DELTA database of 331 characters and 166 mostly family-level taxa. Includes downloadable software (ANNiKEY) allowing the data to be interrogated using the open-source DELTA program Intkey, which enables both interactive identification and taxonomic query functionality. For each family-level taxon we provide a diagnosis, full description, links to taxonomic data at World Register of Marine Species, illustrations of diagnostic features, and a summary of the recent literature including a list of published keys to genera and species