Common name: Black-spotted Frog
available through www.itis.gov
Native Range: Pelophylax nigromaculatus is known from the Russian Far East (from Evreiskaya Autonomous Province to the lower reaches of the Amur River), central, northern and north-eastern China, the Democratic People's Republic of Korea, and Japan (Kuzmin et al., 2004).
Hydrologic Unit Codes (HUCs) Explained
Puerto Rico &
Interactive maps: Point Distribution Maps
A single individual was collected in the Namo River in Guam in 2004 (Walsh, Personal Communication). Another single individual was collected in the Sigua River in Guam in 2006 (Walsh, Personal Communication). Specimens were collected from Oahu, Hawaii in 1895 and 1938 (McKeown, 1996).
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 Pelophylax nigromaculatus are found here.
Table last updated 2/27/2023
† Populations may not be currently present.
Means of Introduction: Unknown in Guam. Stocked for biocontrol in Hawaii.
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)
McKeown, S. 1996. A field guide to reptiles and amphibians in the Hawaiian Islands. Diamond Head Publishing, Inc., Los Osos, California.
Kuzman, S., I. Maslova, B. Tuniyev, M. Matsui, L. Pipeng, and Y. Kaneko. 2004. Pelophylax nigromaculatus. The IUCN Red List of Threatened Species. Version 2015.2. http://www.iucnredlist.org. Downloaded on 23 July 2015.
Revision Date: 5/16/2018
Powell, R.S., 2023, Pelophylax nigromaculatus (Hallowell, 1861): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=73, Revision Date: 5/16/2018, Access Date: 4/1/2023
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.