Claxtonia goni, a new species of Tardigrada (Heterotardigrada, Echiniscidae) from the island of Maui (Hawaiian Islands, U.S.A., North Pacific Ocean), with notes to the genus Claxtonia Gąsiorek amp; Michalczyk, 2019.

A new Tardigrada species, Claxtonia goni sp. nov. is described from specimens collected in the central area of the Haleakalā National Park, the island of Maui, Hawaii, U.

Morphological and genetic analysis of Milnesium cf. granulatum (Tardigrada: Milnesiidae) from Northeastern North America‡.

Specimens of a limnoterrestrial tardigrade collected from moss in New Hampshire, USA and Newfoundland, Canada were identified as belonging to the genus Milnesium. Morphometric data and genetic analysis of the COI gene demonstrated that animals collected from these sites represent the same species. Specimens most closely resemble Milnesium granulatum, a South American species that has been reported also from Great Smoky Mountains National Park (GSMNP), USA.

Re-description of Echiniscus cavagnaroi Schuster & Grigarick, 1966 (Tardigrada: Heterotardigrada: Echiniscoidea: Echiniscidae) from type material, with new records from Hawaii and Bermuda.

The description of Echiniscus cavagnaroi Schuster & Grigarick, 1966 (Tardigrada: Heterotardigrada: Echiniscoidea: Echiniscidae) is emended with new morphometric measurements of the holotype and eleven paratypes. The length of Cirrus A in the holotype (25.2 μm) was only half the 50 μm reported in the original description.

Terrestrial and freshwater Tardigrada of the Americas.

This paper provides a comprehensive list of the freshwater and terrestrial tardigrade fauna reported from the Americas (North America, South America, Central America and the West Indies), their distribution in the Americas, and the substrates from which they have been reported. Data were obtained from 316 published references. Authors' identifications were accepted at face value unless subsequently amended.