Disclaimer:

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: an applesnail

Synonyms and Other Names: Pila conica

Native Range: Indonesia, Malaysia, Myanmar, Philippines, Cambodia, Laos, Vietnam, and Singapore (Low et al. 2013).

Alaska	Hawaii	Puerto Rico & Virgin Islands	Guam Saipan

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

Status: Established on Hawaii (Cowie et al. 2017) and Guam (Smith 1992, 2003).

References: (click for full references)

Cowie, R.H., K.A. Hayes, E.E. Strong, and S.C. Thiengo. 2017. Non-native apple snails: systematics, distribution, invasion history and reasons for introduction. Pages 3-32 in Joshi, R.C., Cowie, R.H., and Sebastian, L.S, eds. Biology and management of invasive apple snails. Philippine Rice Research Institute (PhilRice), Maligaya. Science City of Muñoz, Nueva Ecija 3119, 406 pp.

Low, M.E.Y., S.K. Tan, and T.H. Ng. 2013. Pila conica (Wood, 1828), or Pila scutata (Mousson, 1848)? The correct name for the native apple snail of Singapore (Gastropoda: Ampullariidae). Nature in Singapore 6:55-60.

Smith, B. D. 1992. Introduction and dispersal of apple snails (Ampullariidae) on Guam. Pacific Science Association Information Bulletin 44(1/2): 12–14.

Smith, B. D., 2003. Prosobranch gastropods of Guam. Micronesica 35–36: 244–270.

Other Resources:
US Fish and Wildlife Service Ecological Risk Screening Summary for Pila scutata

Author: Benson, A.J.

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.