Otacilia Thorell, 1897

Jin, Chi, Fu, Lina, Yin, Xiangchu & Zhang, Feng, 2016, Four new species of the genus Otacilia Thorell, 1897 from Hunan Province, China (Araneae, Phrurolithidae), ZooKeys 620, pp. 33-55 : 35-36

Taxon classification Animalia Araneae Phrurolithidae

Otacilia Thorell, 1897

Diagnosis.

Chelicerae each with two bristles (rarely with one bristle) on anterior side; leg formula: 4123 (rarely 1423); spination: femora I–II d 0-2, III–IV d 0-1, I pl 3-6, II pl 0-3; tibiae I–II usually with 6-8 pairs of ventral spines; tibia I always one more rv than pv spine and tibia II always one more pv than rv spine; metatarsi I–II usually with 3-4 pairs of ventral spines, and always one more pv than rv spine.

Male palp: femur with ventral apophysis or hump; tibia usually with single strong RTA, some species with BTA or DTA; embolus hook-shaped or needle-like, originating antero-prolaterally; tegular apophysis sclerotized or transparent, present or absent, antero-retrolaterally located; conductor membranous, well developed or absent. Female genitalia: epigynal median plate distinct or absent; vulva with pair of transparent bursae anteriorly and pair of strongly sclerotized spermathecae posteriorly.

Species groups of Otacilia .

After reviewing 59 Otacilia species (including the four new Chinese species described in this paper), the grouping was revised and the current species assigned to four groups based on assessment of Fu et al. (2016b). The revoluta group was divided into two new groups, the longituba group (16 species) and the ambon group (two species). The armatissima group (29 species) and the pseudostella group (nine species) were preserved and updated. Three species were not assigned to any group because of their poor original description and figures or peculiar structure: Otacilia luzonica (Simon, 1898) (female is unknown; description and figures are not diagnostic), Otacilia papilla Dankittipakul & Singtripop, 2014 (male is unknown; epigyne medially with lobe and absence of bursae) and Otacilia paracymbium Jäger & Wunderlich, 2012 (female is unknown; cymbium with paracymbium ).

Here the male and female diagnostic characters are listed for each species group, followed by a list of all of the included Otacilia species (Table 1).