Humped Crab Spiders

Tmarus Sundevall, 1833

Type species: Aranea pigra Walckenaer, 1802

Fauna Portal Genus Number: 1021

(after Arachchi & Benjamin 2019): Species of Tmarus can be separated from other Thomisidae by a dorsoposterior tubercle or hump, which is more prominent in females, an elevated ocular area with well developed lateral eyes (ALE > PLE), a pyriform opisthosoma and relatively wide clypeus gradually sloping towards the front. Despite the highly variable genital morphology within the genus, males can be identified by a tegulum with or without apophyses, and a stout or elongated embolus. Females can be distinguished by the epigynum having a broad epigynal hood or a vertical epigynal ridge and small spermathecae.