Travunioid
Guides
Cryptomaster leviathan
Leviathan harvestman
Cryptomaster leviathan is a harvestman (opilionid arachnid) from southeastern Oregon, described in 1969. It is notable for its relatively large body size compared to other travunioid Laniatores, which inspired its name referencing the biblical Leviathan. The species was the sole member of its genus until the 2016 discovery of its congener C. behemoth. Populations show surprisingly low genetic divergence across an expanded range spanning multiple mountain ranges.