Pacullidae Simon, 1894

Xin, Yafei, Jiang, Tongyao, Yao, Zhiyuan & Li, Shuqiang, 2021, Three new species of the extinct spider genus Furcembolus (Araneae: Pacullidae) from Late Cretaceous Burmese amber, Zootaxa 4984 (1), pp. 258-273 : 259

Family Pacullidae Simon, 1894

Remarks. The fossil genus † Furcembolus was first assigned to Pacullidae by Magalhaes et al. (2020). Pacullidae can be distinguished from Tetrablemmidae by their larger size (total length 3.0–9.0), heavily rugose cuticle and by lacking a pair of large membranous receptacles in the female genitalia ( Shear 1978; Lehtinen 1981; Wheeler et al. 2017). Though characters concerning female genitalia are almost impossible to observe in fossil specimens, † Furcembolus can be assigned to Pacullidae by their size (>3.0) and rugose cuticle.