Sphaerillo boninensis Nunomura, 1990 (Crustacea, Isopoda, Oniscidea) is a junior synonym of a pantropical species, Venezillo parvus (Budde-Lund, 1885)

A re-examination of the holotype and paratype of Sphaerillo boninensis from Chichijima Island, part of the UNESCO-listed Ogasawara Islands, reveals that this species is not distinct but rather a junior synonym of the pantropical Venezillo parvus. This finding clarifies taxonomic confusion in Isopoda (Crustacea) and updates the regional biodiversity record for this globally recognized World Heritage Site. The study employed morphological analysis to compare key traits, confirming the synonymy based on shared characteristics with Venezillo parvus described from other regions.

Karasawa, S. (2020). Sphaerillo boninensis Nunomura, 1990 (Crustacea, Isopoda, Oniscidea) is a junior synonym of a pantropical species, Venezillo parvus (Budde-Lund, 1885). ZooKeys, 923, 1–14. https://doi.org/10.3897/zookeys.923.26018