 Huntsman spiders of the family Sparassidae have also been termed "tarantulas" because of their large size, when, in fact, they are not related, and instead belong to the infraorder Araneomorphae.Many theraphosid genera have names, either accepted or synonymous, containing the element "pelma".This can be traced back to Carl Ludwig Koch in 1850, who in describing his new genus "Eurypelma" wrote "", literally 'the velvet-brush of the footsole very wide'.