sperm. The male will position itself on its back and deposit its sperm. Unlike other crayfish species, the Cherax dispar does not use its cheliped to cage females during copulation. It is mainly used during mating when the males and females fight. Behaviour In instances when displaying males have chelae of a similar size, they will engage in combat and those with the greater chelae closing force will win. Female C. dispar uses honest signalling of strength meaning the size of their chelae is a good indication to other C. dispar about that individual's strength. Individuals possessing larger chelae engage in more agonistic encounters and are also more likely to win. In a study of female C. dispar chelae strength, they found that chelae size also indirectly indicated the dominance of the female because of its honest indication of strength. Species The genus contains 59 species: Cherax acherontis Patoka, Bláha & Kouba, 2017 Cherax albertisii Nobili, 1899 Cherax albidus Clarke, 1936 Cherax alyciae Lukhaup, Eprilurahman & von Rintelen, 2018 Cherax aruanus Roux, 1911 Cherax austini Coughran & Hobson, 2012 Cherax barretti Clark, 1941 Cherax bicarinatus (Gray, 1845) Cherax boesemani Lukhaup & Pekny, 2008 Cherax boschmai Holthuis, 1949 Cherax buitendijkae Holthuis, 1949 Cherax cainii Austin, 2002 Cherax cairnsensis Riek, 1969 Cherax cartalacoolah Short, 1993 Cherax cid Coughran & Furse, 2012 Cherax communis Holthuis, 1949 Cherax crassimanus Riek, 1967 Cherax cuspidatus Riek, 1969 Cherax davisi Clark, 1941 Cherax depressus Riek, 1951 Cherax destructor Clark, 1936 Cherax dispar Riek, 1951 Cherax esculus Riek, 1956 Cherax gherardii Patoka, Bláha & Kouba, 2015 Cherax glaber Riek, 1967 Cherax glabrimanus Riek, 1967 Cherax gladstonensis Riek, 1969 Cherax holthuisi Lukhaup & Pekny, 2006 Cherax leckii Coughran, 2005 Cherax longipes Holthuis, 1949 Cherax lorentzi Roux, 1911 Cherax minor Holthuis, 1996 Cherax misolicus Holthuis, 1949 Cherax monticola Holthuis, 1950 Cherax murido Holthuis, 1949 Cherax neocarinatus Riek, 1967 Cherax neopunctatus Riek, 1969 Cherax nucifraga Short, 1991 Cherax pallidus Holthuis, 1949 Cherax paniaicus Holthuis, 1949 Cherax papuanus Holthuis, 1949 Cherax parvus Short & Davie, 1993 Cherax peknyi Lukhaup & Herbert, 2008 Cherax plebejus (Hess, 1865) Cherax preissii (Erichson, 1846) syn. Cherax angustus McCulloch, 1914 Cherax pulcher Lukhaup, 2015 Cherax punctatus Clark, 1936 Cherax quadricarinatus (von Martens, 1868) Cherax quinquecarinatus (Gray, 1845) Cherax rhynchotus Riek, 1951 Cherax robustus Riek, 1951 Cherax rotundus Clark, 1941 Cherax setosus (Riek, 1951) Cherax snowden Lukhaup, Panteleit & Schrimpf, 2015 syn. Cherax subterigneus Cherax solus Holthuis, 1949