This dataset contains the digitized treatments in Plazi based on the original journal article Shear, William A., Marek, Paul E. (2025): Additions to the millipede family Caseyidae Verhoeff, 1909. IV. Two new genera and three new species (Chordeumatida, Striarioidea, Caseyidae). Zootaxa 5631 (3): 533-547, DOI: 10.11646/zootaxa.5631.3.7, URL: https://doi.org/10.11646/zootaxa.5631.3.7
Abstract
Paropiona Shear & Marek, gen. nov. is described from northwestern and central Washington State, USA. It includes two new species, Paropiona gardneri Shear & Marek, sp. nov. from Pacific and Cowlitz Counties, and Paropiona aenigma Shear & Marek, sp. nov. from Clallam, Grays Harbor, Jefferson, Lewis, Mason, Pacific, Thurston and Wahakiakum Counties. Opionoides Shear & Marek, gen. nov. is monotypic with only Opionoides cataracta Shear & Marek, sp. nov. from Coos Co. Oregon. The new genera are related to, but distinct from the genus Opiona Chamberlin, 1951.
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