Abdosetae Fu, Zhang & MacDermott, 2010

Jin, Chi, Fu, Jianying & Zhang, Feng, 2015, A review of the genus Abdosetae (Araneae: Phrurolithidae) from China, Zootaxa 4007 (1), pp. 91-103 : 92-93

Abdosetae Fu, Zhang & MacDermott, 2010

Abdosetae Fu et al., 2010: 86 .

Type species: Abdosetae hainan Fu, Zhang & MacDermott, 2010 , by original designation.

Diagnosis. This genus resembles Otacilia Thorell, 1897 in habitus and body pattern. The narrow cephalic part of the cephalothorax widens abruptly to the thoracic part; the cheliceral promargin usually has three separated teeth and the retromargin has two teeth that are close to one another; however, Abdosetae differs from Otacilia by: 1) the male abdomen ventrally with a double longitudinal row of long setae behind the epigastral fold and with a tuft of bristles anterior to the spinnerets, whereas Otacilia lacks them; 2) the chelicerae have a single long spine anteriorly, whereas Otacilia have two spines (one long and one short); 3) the male palpal femora is not visibly modified ventrally, only somewhat swollen, and has a distal concavity, whereas Otacilia often have a distinct knob-shaped compressed apophysis; 4) the male palpal tibia has one large RTA and one slender DTA, whereas Otacilia have one or two RTAs of different sizes; 5) femur I with three prolateral spines distally, while Otacilia usually have more than three spines, often four; 6) all femora basally without any dorsal spines, whereas Otacilia usually have one short dorsal spine. All the provided Otacilia characters are according to Jäger and Wunderlich (2012).

Description. Small spiders, total length 1.80–3.50. Carapace low, smooth, elongate-ovoid in dorsal view, highest near fovea, widest at coxae II and III; yellowish-brown to brown; cephalic groove and radial furrow brown; fovea short, longitudinal. Eyes moderately large, arranged in two recurved rows. From above, PER wider than AER; AME nearly the same size as ALE; PME separated, smaller than PLE and reduced in female. Chelicerae pale brown, with three well separated promarginal and two close retromarginal teeth; with single long spine anteriorly. Endites longer than wide (4/3), convex laterally, obliquely depressed; labium broad, rounded distally; sternum truncate anteriorly, pointed posteriorly, precoxal triangles present. Leg formula: 4123. Legs brown, all femora without a dorsal spine, with only a row of ventral spines; femur I usually with three prolateral spines distally, femur II usually with two prolateral spines; tibia I usually with six proventral spines and seven retroventral spines, tibia II usually with six pairs of ventral spines; metatarsus I usually with four pairs of ventral spines, metatarsus II usually with four proventral spines and three retroventral spines; posterior legs lack spines; metatarsi III and IV with distal preening brush; leg scopulae absent, claw tufts consisting of several well developed spatulate hairs. Abdomen oval, yellowish, with narrow anterior dorsal scutum in males. Colulus lacking. In males, abdomen ventrally with two rows of long setae behind the epigastral fold and tuft of bristles anterior to the spinnerets. In females, PLS with distal conical segment, small, with a few spigots with enlarged bases; PMS enlarged, laterally compressed with two parallel rows of atypical cylindrical gland spigots. Male palp: femur lacking ventral hump, only somewhat swollen, with distal concavity; tibia with one large RTA, one slender DTA and one conspicuous VTH; cymbium with 2 spines at the tip, one long and one short and one RBC; tegulum convex, usually with conspicuous apophysis; sperm duct short, thick and distinct; embolus relatively long, situated at tip of tegulum. Epigyne either with a pair of shallow concavities or flat, copulatory openings concealed in anterior margins of concavities or exposed; copulatory ducts short, connected to two transparent bursae; spermathecae small and usually spherical; a short tube connects the bursae’s oval, sclerotized bases and the spermathecae.

Distribution. China ( Hainan ), Malaysia.

Composition. Five species, including three new species described here: Abdosetae hainan Fu et al., 2010 , A. ornata ( Deeleman-Reinhold, 2001) , A. digitata sp. nov., A. falcata sp. nov. and A. hamata sp. nov..