Table 1.
Collection localities and count of dorsal mucronation for each Hyalella population
| Collection locality | Coordinates | Population | Modal dorsal mucronation count (n, range) |
|---|---|---|---|
| Devils River |
29°53′58.45″N, 100°59′51.17″W |
Devils Hyalella sp. (widespread) | 2 (20, 0–2) |
| Comal River |
29°42′38.00″N, 98°7′39.60″W |
H. cf. azteca (widespread) | 2 (20, 2–2) |
| San Marcos River |
29°53′27.42°N”, 97°55′56.73″W |
H. cf. azteca (widespread) | 2 (20, 2–2) |
| San Marcos River |
29°53′36.10″N, 97°55′52.80″W |
SMS Hyalella sp. (spring endemic) | 3 (20, 3–4) |
| Clear Creek Springs |
30°54′22.20″N, 99°57′29.20″W |
H. texana (spring endemic) | 4 (20, 3–4) |