Hyastenus is a genus of crabs in the family Epialtidae, subfamily Pisinae, containing the following extant species:
- Hyastenus ambonensis <small>Griffin & Tranter, 1986</small>
- Hyastenus aries <small>(Latreille, 1825)</small>
- Hyastenus auctus <small>Rathbun, 1916</small>
- Hyastenus biformis <small>Rathbun, 1916</small>
- Hyastenus bispinosus <small>Buitendijk, 1939</small>
- Hyastenus borradailei <small>(Rathbun, 1907)</small>
- Hyastenus brachychirus <small>Nobili, 1899</small>
- Hyastenus brevicornis <small>Ortmann, 1894</small>
- Hyastenus brockii <small>de Man, 1887</small>
- Hyastenus campbelli <small>Griffin & Tranter, 1986</small>
- Hyastenus consobrinus <small>A. Milne-Edwards, 1895</small>
- Hyastenus convexus <small>Miers, 1884</small>
- Hyastenus cornigerus <small>Sakai, 1938</small>
- Hyastenus cracentis <small>Griffin & Tranter, 1986</small>
- Hyastenus diacanthus <small>(De Haan, 1839)</small>
- Hyastenus elatus <small>Griffin & Tranter, 1986</small>
- Hyastenus elongatus <small>Ortmann, 1893</small>
- Hyastenus espinosus <small>(Borradaile, 1903)</small>
- Hyastenus fracterculus <small>Rathbun, 1916</small>
- Hyastenus gracilimanus <small>Yang & Dai, 1994</small>
- Hyastenus hectori <small>Miers, 1879</small>
- Hyastenus hendersoni <small>(Laurie, 1906)</small>
- Hyastenus hilgendorfi <small>de Man, 1887</small>
- Hyastenus inermis <small>(Rathbun, 1911)</small>
- Hyastenus kyusyuensis <small>(Yokoya, 1933)</small>
- Hyastenus mindoro <small>Griffin & Tranter, 1986</small>
- Hyastenus minutus <small>Buitendijk, 1939</small>
- Hyastenus planasius <small>(Adams & White, 1848)</small>
- Hyastenus pleione <small>(Herbst, 1803)</small>
- Hyastenus scrobiculatus <small>Rathbun, 1916</small>
- Hyastenus sebae <small>White, 1847</small>
- Hyastenus sinope <small>(Adams & White, 1848)</small>
- Hyastenus spinosus <small>A. Milne-Edwards, 1872</small>
- Hyastenus subinermis <small>Zehntner, 1894</small>
- Hyastenus ternatensis <small>Buitendijk, 1939</small>
- Hyastenus truncatipes <small>(Miers, 1879)</small>
- Hyastenus uncifer <small>Calman, 1900</small>
- Hyastenus whitei <small>Griffin, 1976</small>
One further fossil species is known.
References