TL;DR: The formerly unknown female of S. longibulbi Soares & Camargo 1948 is found to lack spermathecae, an unusual genital feature not found in any other mygalomorph spider species.
Abstract: The monotypic Brazilian genus Sickius Soares & Camargo 1948 is revalidated, rediagno- sed, and tentatively transferred to the Ischnocolinae. The formerly unknown female of S. longibulbi Soares & Camargo 1948 is found to lack spermathecae. This unusual genital feature, not found in any other mygalomorph spider species, is described and discussed.
TL;DR: The monotypic Brazilian genus Sickius Soares & Camargo 1948 is revalidated, rediagnosed, and tentatively transferred to the Ischnocolinae as mentioned in this paper.
Abstract: The monotypic Brazilian genus Sickius Soares & Camargo 1948 is revalidated, rediagnosed, and tentatively transferred to the Ischnocolinae. The formerly unknown female of S. longibulbi Soares & Camargo 1948 is found to lack spermathecae. This unusual genital feature, not found in any other mygalomorph spider species, is described and discussed.