%0 Journal Article %T Parthenogenesis in scorpions: some history - new data %A Louren£¿o %A W. R. %J Journal of Venomous Animals and Toxins including Tropical Diseases %D 2008 %I Centro de Estudos de Venenos e Animais Pe?onhentos - CEVAP, Universidade Estadual Paulista - UNESP %R 10.1590/S1678-91992008000100003 %X parthenogenesis, a rare phenomenon in chelicerates, apart from mites, is reviewed in scorpions, notably tityus serrulatus lutz & mello from brazil, tityus columbianus (thorell) from colombia and tityus metuendus pocock from peru and brazil. thelytokous parthenogenesis (with all-female broods) is most often observed. the only known exception to this is t. metuendus in which arrhenotoky (all-male broods) has been observed. in the present paper, current ideas regarding parthenogenesis in scorpions are summarized. the notion of geographic parthenogenesis ('parth¨¦nogen¨¨se g¨¦ographique'), coined by vandel in 1928, is discussed. this rule is tentatively exemplified by a new case of parthenogenesis reported in a scorpion of the genus tityus c. l. koch, inhabiting 'pico da neblina' in brazil / venezuela. %K scorpions %K geographic parthenogenesis %K review %K thelytoky %K arrhenotoky %K deutherotoky. %U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1678-91992008000100003&lng=en&nrm=iso&tlng=en