Entomology definition of Austroriparian faunal area: that part of lower austral
zone covering the greater part of the South Atlantic and Gulf
States. Begins near mouth of Chesapeake Bay, covers half or more
of Virginia, North and South Carolina, Georgia, Florida, Alabama,
all of Mississippi and Louisiana, east Texas, nearly all of
Indian Territory, more than half of Arkansas and parts of
Oklahoma, s. e. Kansas, so. Missouri, so. Illinois, s. w. corner
of Indiana and bottom lands of Kentucky and Tennessee.