Photo credit: © Mark Lethaby/Flickr

Calico Crayfish

(Orconectes immunis)

Report this Species!

If you believe you have found this species in its invasive range in Pennsylvania, please report your findings to iMapInvasives by submitting an observation record.

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• Already a registered user? Login to submit your observation.

• Not a registered user? Submit a public report.

• Watch our training video to learn how to submit an observation record (as a registered user).

Species at a Glance

Learn more about the Calico crayfish and its impacts by viewing information available from USGS NAS.

Range Information

The map below depicts both the native and invasive ranges of Calico crayfish in Pennsylvania, displayed using a HUC 8 watershed layer.

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Data used to create this map was provided by:

• USGS NAS

• Pennsylvania iMapInvasives