Aim We model the ecological niches and geographic distributions of 22 of 23 Megalagrion damselfly species and explore ecological and evolutionary hypotheses that may explain patterns of diversity. Location The Hawaiian Archipelago (Kaua‘i, O‘ahu, Moloka‘i, Lāna‘i, Maui, Hawai‘i). Taxon Megalagrion damselflies (Odonata: Coenagrionidae) are an endemic Hawaiian radiation of 23 species. Methods We gathered occurrence data from GBI...

The genetic structure and evolutionary history of an endemic anchialine species, the shrimp Halocaridina rubra Holthuis, 1963 (Crustacean: Decapoda: Atyidae), was investigated across its range in the Hawaiian archipelago using mitochondrial (e.g., cytochrome oxidase subunit I and large subunit ribosomal) gene sequences. A survey of 573 individuals collected from 34 sites on the islands of Hawai’i, Maui, and Oahu revealed 13 di...