Howells Freshwater Mussels App

LOUISIANA PIGTOE (Pleurobema riddellii)Threatened (legally) TPWD – Proposed USFWS• Occurred in TX, LA, & apparently AR & OK.• Occurred in East Texas in from the San Jacinto to the Sulphur River.– Never particularly abundant in Texas waters.• Dramatically reduced in numbers in recent decades.• Now small numbers have been confirmed in the upper & lower Neches-Angelina system & a Louisiana tributary of the lower Sabine River.