Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
4505
| TX | | Matagorda Bay | 1997 |
12100401
| East Matagorda Bay | collected |
4213
| TX | Cameron | Gulf of Mexico off Brownsville | 1989 |
13090002
| Lower Rio Grande | failed |
4214
| TX | Cameron | Gulf of Mexico off Brownsville | 1990 |
13090002
| Lower Rio Grande | failed |
4045
| TX | Cameron | Laguna Madre in the area north of the mouth of the Arroyo Colorado, near Arroyo City (approximately 20 miles north of Brownsville, TX. | 1991 |
12110208
| South Laguna Madre | failed |
163764
| TX | Matagorda | Palacios | 1998 |
12100401
| East Matagorda Bay | collected |
4301
| TX | Willacy | Port Mansfield, TX, in 42 feet of water | 1992 |
12110208
| South Laguna Madre | failed |