The Nonindigenous Occurrences section of the NAS species profiles has a new structure. The section is now dynamically updated from the NAS database to ensure that it contains the most current and accurate information. Occurrences are summarized in Table 1, alphabetically by state, with years of earliest and most recent observations, and the tally and names of drainages where the species was observed. The table contains hyperlinks to collections tables of specimens based on the states, years, and drainages selected. References to specimens that were not obtained through sighting reports and personal communications are found through the hyperlink in the Table 1 caption or through the individual specimens linked in the collections tables.

Stephanella hina
Stephanella hina
(Japanese moss animal)

Copyright Info
Stephanella hina Oka, 1908

Common name: Japanese moss animal

Native Range: Stephanella hina has a native range restricted to Japan and Korea (Rao 1992).

Hydrologic Unit Codes (HUCs) Explained
Interactive maps: Point Distribution Maps

Nonindigenous Occurrences:

Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Stephanella hina are found here.

StateFirst ObservedLast ObservedTotal HUCs with observations†HUCs with observations†
ID199820002Coeur d'Alene Lake; Pacific Northwest Region
MA198519872Chicopee River; New England Region
OR199820004Coos; Pacific Northwest Region; Upper Deschutes; Upper Klamath
WA1998200011Colville; Hoh-Quillayute; Lower Columbia-Sandy; Lower Cowlitz; Lower Spokane; Nooksack; Pacific Northwest Region; Pend Oreille; Upper Chehalis; Upper Yakima; Wenatchee

Table last updated 7/25/2024

† Populations may not be currently present.

Means of Introduction: Unknown.

Status: Established in all locations it has been collected.

Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.

References: (click for full references)

Marsh, T., and T. S. Wood. 2002. Results of a freshwater bryozoan survey in the Pacific Northwestern United States, Pages 207-214 in Bryozoan Studies 2001, Wyse Jackson, D. P., C. J. Buttler, and M. S. Jones, eds., Balkema Publishers, Rotterdam, Netherlands.

Rao, K.S. 1992. Fresh Water Ecology: Bryozoa. Anmol Publications, New Delhi. 75pp.

Smith, D.G. 1988. Stephanella hina (Ectoprocta:Phylactolaemata) in North America, with notes on its morphology and systematics. Journal of the North American Benthological Society 7(3): 253-259.

Other Resources:
Stephanella hina feeding

Author: Cannister, M., and A.J. Benson

Revision Date: 8/14/2019

Citation Information:
Cannister, M., and A.J. Benson, 2024, Stephanella hina Oka, 1908: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=2334, Revision Date: 8/14/2019, Access Date: 7/25/2024

This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.


The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [7/25/2024].

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