Table 1.
Extinction risk summarized by family and genus. Figures for the proportion of threatened species represent the mid-estimate [(number of threatened)/(total−DD)], lower estimate [(number of threatened)/total] and high estimate [(number of threatened + DD)/total].
| taxa | native geographical locality | DD | LC | NT | VU | EN | CR | EX | total | proportion threatened (low estimate–high estimate) |
|---|---|---|---|---|---|---|---|---|---|---|
| Astacidae | 3 | 3 | 0 | 1 | 1 | 1 | 1 | 10 | 43% (30–60%) | |
| Astacus | Europe | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 3 | 50% (33–67%) |
| Austropotamobius | Europe | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 100% (50–100%) |
| Pacifastacus | USA, Canada | 1 | 2 | 0 | 0 | 0 | 1 | 1 | 5 | 25% (20–40%) |
| Cambaridae | 91 | 221 | 26 | 20 | 33 | 19 | 3 | 413 | 22% (17–39%) | |
| Barbicambarus | USA | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0% (0–0%) |
| Bouchardina | USA | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 (0–100%) |
| Cambarellus | USA, Mexico | 3 | 8 | 1 | 0 | 1 | 2 | 2 | 17 | 21% (18–35%) |
| Cambaroides | East Asia | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0% (0–100%) |
| Cambarus | USA, Canada | 15 | 61 | 9 | 4 | 5 | 7 | 0 | 101 | 19% (16–31%) |
| Distocambarus | USA | 3 | 0 | 0 | 2 | 0 | 0 | 0 | 5 | 100% (40–100%) |
| Fallicambarus | USA, Canada | 2 | 8 | 5 | 1 | 1 | 1 | 0 | 18 | 19% (17–28%) |
| Faxonella | USA | 0 | 3 | 1 | 0 | 0 | 0 | 0 | 4 | 0% (0–0%) |
| Hobbseus | USA | 3 | 1 | 0 | 0 | 3 | 0 | 0 | 7 | 75% (43–86%) |
| Orconectes | USA, Canada, Mexico | 9 | 62 | 3 | 10 | 4 | 1 | 0 | 89 | 19% (17–27%) |
| Procambarus | USA, Mexico, Cuba, Belize, Guatemala, Honduras | 51 | 77 | 6 | 3 | 19 | 8 | 1 | 165 | 26% (18–49%) |
| Troglocambarus | USA | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0% (0–0%) |
| Parastacidae | 31 | 50 | 14 | 12 | 33 | 27 | 0 | 167 | 53% (43–62%) | |
| Astacoides | Madagascar | 4 | 1 | 0 | 0 | 2 | 0 | 0 | 7 | 67% (29–86%) |
| Astacopsis | Australia | 0 | 2 | 0 | 0 | 1 | 0 | 0 | 3 | 33% (33–33%) |
| Cherax | Australia, New Guinea | 9 | 12 | 6 | 2 | 7 | 3 | 0 | 39 | 40% (31%–54%) |
| Engaeus | Australia | 5 | 17 | 3 | 3 | 3 | 4 | 0 | 35 | 33% (29–43%) |
| Engaewa | Australia | 0 | 2 | 0 | 0 | 2 | 1 | 0 | 5 | 60% (60–60%) |
| Euastacus | Australia | 1 | 8 | 1 | 5 | 17 | 17 | 0 | 49 | 81% (80–82%) |
| Geocharax | Australia | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 50% (50–50%) |
| Gramastacus | Australia | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0% (0–0%) |
| Ombrastacoides | Australia | 2 | 4 | 2 | 1 | 0 | 2 | 0 | 11 | 33% (27–45%) |
| Paranephrops | New Zealand | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0% (0–0%) |
| Parastacus | South America | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 8 | 0% (0–75%) |
| Samastacus | South America | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0% (0–100%) |
| Tenuibranchiurus | Australia | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 100% (100–100%) |
| Virilastacus | South America | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0% (0–100%) |
| all species | 125 | 274 | 40 | 33 | 67 | 47 | 4 | 590 | 32% (24–47%) |