Thiodina Simon, 1900

Thiodina Simon, 1900: 392 (type species by original designation: Attus elegans Nicolet, 1849 = Thiodina nicoleti Roewer, 1951); Simon 1901a; Peckham & Peckham 1909; Richman & Vetter 2004; Hill 2012; Bustamante et al. 2015; Ruiz & Maddison 2015; Maddison 2015; World Spider Catalog 2017.

Diagnosis. Males resemble those of Cyllodania, Arachnomura, Atomosphyrus, Hyetussa and Tartamura in having spine-like setae on the anterior surface of male chelicera (Figs 8A‒8J; see also Bustamante et al. 2015: figs 4‒5, 9).

They differ from Cyllodania in not having cheliceral projections (Figs 8I ‒8J), from Arachnomura, Atomosphyrus and Tartamura in having a shorter embolus, and from Hyetussa in not having a bump in the embolus. Females resemble those of Cyllodania in the general pattern of genitalia, but differ in having less coiled copulatory ducts and less rounded spermathecae (Fig. 26F). Also males and females can be distinguished from other thiodinines for including species with a strong pattern of dark/clear longitudinal stripes on the abdomen of both sexes (Figs 24A, 25A, 25D; Bustamante et al. 2015: figs 1, 8).

List of species (chronological order):

1. Thiodina nicoleti Roewer, 1951 (type species). 2. Thiodina minuta (Galiano, 1977) comb. nov. 3. Thiodina firme sp. nov.

4. Thiodina perian sp. nov.