Otacilia Thorell, 1897

Mu, Yannan & Zhang, Feng, 2023, Further additions to the guardstone spider fauna from China (Araneae: Phrurolithidae), Zootaxa 5338 (1), pp. 1-104 : 22

Otacilia Thorell, 1897

Otacilia Thorell, 1897: 243 ; Deeleman-Reinhold 2001: 409 ; Kamura 2004: 87; Fu, Zhang & Zhang, 2016: 198 ; Jin et al., 2016: 35; Zamani & Marusik, 2020: 312.

(type species: Otacilia armatissima Thorell, 1897 , by original designation).

Palaetyra Simon, 1898 .

Diagnosis. This genus can be distinguished from Phrurolithus by having chevron stripes posteriorly on abdomen and two strong, thin tibial apophyses in male palp. It differs from Abdosetae by the absence of a longitudinal row of long setae behind the epigastric fold in males. They also can be separated by lacking a tegular sheet (vs with tegular sheet in Lingulatus Mu & Zhang, 2022) and prolateral tegular apophysis (vs with prolateral tegular apophysis in Xilithus Liu & Li, 2022 ). This genus is similar to Aculithus , but can be distinguished by the long and curved embolus in the male palp and the distinct copulatory openings, and the large and separated bursae, in the female epigyne.

Description. Small to medium spiders. Carapace oval, yellow to brown, with different pattern in dorsal view. Chelicerae with two (one long and another short) spine anteriorly. Femora I–II with one or two dorsal spines, femora III–IV with one dorsal spine; femur I–II with three to seven prolateral spines; tibia I–II with more than six pairs of ventral spines (usually unpaired); metatarsus I with four pairs of ventral spines, metatarsus II with four proventral spines and three retroventral spines. Abdomen oval, with distinct chevron stripes posteriorly in dorsal view, with small and thin dorsal scutum anteriorly in male, absent in female. Male palp: femoral apophysis well developed; tibia with one retrolateral apophysis and one dorsal tibial apophysis (sometimes absent); bulb oval, as wide as cymbium or wider than cymbium; embolus long, needle-like or hook shaped; conductor present or absent. Female epigyne: median septum present or absent; copulatory openings distinct; copulatory ducts and connecting tubes variable, glandular appendages digital or mastoid-shaped; bursa membranous, spermathecae with different shapes.