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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.

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Common name: Japanese moss animal

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

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

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

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

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.