A survey of Phrurolithidae spiders from Jinggang Mountain National Nature Reserve, Jiangxi Province, China

Abstract Phrurolithidae spiders were collected from Jinggang Mountain National Nature Reserve, Jiangxi Province, China, during the past six years. The new genus Alboculus Liu, gen. nov., with the type species Phrurolithus zhejiangensis Song & Kim, 1991, is described, and its previously unknown male is described for the first time. Furthermore, seven new species of Otacilia are described: O. acutangula Liu, sp. nov. (♂♀), O. bijiashanica Liu, sp. nov. (♂♀), O. longtanica Liu, sp. nov. (♀), O. ovoidea Liu, sp. nov. (♂♀), O. shenshanica Liu, sp. nov. (♂♀), O. subovoidea Liu, sp. nov. (♂♀), and O. xiaoxiica Liu, sp. nov. (♀). All species are illustrated with photographs and their distributions are mapped.


Introduction
Otacilia was established by Thorell (1897), with the type species O. armatissima Thorell, 1897 from Myanmar (Burma). In the past ten years, the total number of spe-Leg measurements are given as total length (femur, patella, tibia, metatarsus, tarsus). Leg spines are documented by dividing each leg segment into two aspects, prolateral (p) and retrolateral (r), and indicating the ventral (v) spines as single (1) or paired (2), e.g., femur I pv1111; tibia I v2222.
The abbreviations used in the text are as follows: Eyes ALE anterior lateral eye; AME anterior median eye; MOA median ocular area; PLE posterior lateral eye; PME posterior median eye.

Taxonomy
Family Phrurolithidae Banks, 1892 Comments. Phrurolithidae spiders are mainly distributed in Asia, North America and Europe. Half of them are found from Asia. Four phrurolithid genera are Asian endemics, i.e., Abdosetae Fu, Zhang & MacDermott, 2010, Bosselaerius Zamani & Marusik, 2020, Otacilia Thorell, 1897and Plynnon Deeleman-Reinhold, 2001. Only one genus, Phrurolithus, is widely distributed in Asia, America and Europe. Currently, more than 80 known species in the four former genera have been reported from China. The total number of known Phrurolithidae species from China will rapidly rise to 100 with the addition of seven new species described in the present paper and the future descriptions of additional new species from the country.
Male palp: femur with large ventral extension; tibia with long, sharply-pointed retroventral tibial apophysis, without dorsal apophysis; bulb without median apophysis or conductor; sperm duct long, reaching middle part of the tegulum, narrowed near base of embolus; base of embolus slightly narrowed, embolus very small, hook-shaped, directed antero-prolaterally, embolus accompanied by thick, short distal terminal apophysis (TA) (larger than embolus). Epigyne with clear copulatory atrium medially; glandular appendages slender, located on anterior of connecting tubes; spermathecae rounded, with clavate-like tail.
Palp (Figs 2,6). Femoral apophysis well-developed, width slightly less than half of length, with abundant short setae. Patella unmodified. Tibia with a large retrolateral apophysis, longer than tibia, with sharply pointed and broad base. Cymbium approximately two times longer than wide. Bulb oval, with long V-shaped sperm duct, apophyses absent. Embolus hook-shaped, small, with large base, accompanied by a small tegular apophysis of embolic base, terminal apophysis slightly longer than embolus and surrounded by the embolic base.

Otacilia bijiashanica
Palp 11). Femoral apophysis well-developed, width longer than half of length. Patella unmodified. Retrolateral tibial apophysis large, longer than tibia, hornshaped, with a sharp apex in retrolateral view. Dorsal tibial apophysis large, slightly shorter than tibia, with sharp narrowed sub-medial part and a spine-like apex in dorsal view. Sperm duct strongly sclerotised, hook-shaped in ventral view, anterior part thick, gradually narrowed in posterior part. Retrolateral tegular apophysis extruding laterally, in front of anterior part of sperm duct. Embolus short and hook-shaped.

Otacilia longtanica
Epigyne (Fig. 12C, D). Epigynal plate trapezoid, antero-medially with pair of slitlike copulatory openings, with a narrowed median septum, copulatory ducts, glandular appendage, connecting tubes and spermathecae distinctly visible through integument in intact epigyne. Copulatory ducts very short, relative broad, between copulatory openings and glandular appendage, with pair of elongated transparent bursae anteriorly. Glandular appendages short, proper thick, located on the anterior of connecting tubes. Connecting tubes short, as long as copulatory duct, broad, located between glandular appendages and spermathecae. Spermathecae elongated, oval, slightly separated at their apex. Fertilisation duct short, located apically on spermathecae.
Palp (Fig. 13C−F). Femoral apophysis well-developed, width longer than half of length. Patella unmodified. Retrolateral tibial apophysis large, bending inward to the base of cymbium, triangular extruding in proximal part in retrolateral view, with a clear apophyses located at the base and a blunt apex in dorsal view. Sperm duct Cshaped, strongly sclerotised, around the base of retrolateral tegular apophysis, distal tegular apophysis and embolus; distal tegular apophysis club-shaped, longer than embolus. Conductor, ovoid, slightly shorter than embolus. Embolus, with proper broad base and a short, curved tip.
Distribution. Known only from the type locality in Jiangxi Province, China (Map 2).  (Song, 1990) by the bend of the RTA with a strong basal apophysis (Figs 15C, E, F, 17C) (vs. the submedian part of the RTA with a strong apophysis) and the wider median septum located medially (Fig. 16C, D) (vs. narrowed).

Female. Habitus as in
Colouration (Fig. 16A, B). Abdomen with pair of irregular yellowish spots behind the first pair of oval spots.
Colouration (Figs 18A, B). Carapace yellow, medially with broad dark brown mottled markings in the surface. Fovea distinct, black. Chelicerae, endites, labium and sternum yellow brown. Legs yellow, without dark annulation. Abdomen dark brown, with pair of round and oval pale spots located in the posterior dorsal scutum and three light chevron-shaped stripes in posterior part, and one yellowish transversal stripe in front of the anal tubercle.
Palp 20). Femoral apophysis well-developed, width more than half of length. Patella unmodified. Retrolateral tibial apophysis large, longer than tibia, sword-like in ventral view, bending inward to the base of cymbium, medial part widened and slightly curved, with a strong spine-like tip. Sperm duct U-shaped, strongly sclerotised, around the base of subterminal apophysis, terminal apophysis and embolus. Subterminal apophysis, straight, broad, as long as embolus, anteriorly widened. Terminal apophysis, membranous, fan-shaped, extending to median bulb. Embolus, thick, hook-shaped, with a broad base and a blunt tip. Embolus relatively long, thick spine like, with broad base and a blunt apex.
Distribution. Known only from the type locality in Jiangxi Province, China (Map 2).