Donaldius is a genus of jumping spiders with a single described species, Donaldius lucidus, which is endemic to Panama. D. lucidus is known only from a single female specimen collected in El Valle in July 1936. Gustavo Ruiz has suggested that Donaldius may be closely related to Metaphidippus based on molecular analysis of a specimen collected in Costa Rica.
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