Otacilia sinifera Deeleman-Reinhold, 2001, sp. n.
Creators: name: Deeleman-Reinhold, Christa
Publisher: name: Zenodo
Year: 2001
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Phrurolithidae
Otacilia
Otacilia sinifera

description: <i>Otacilia sinifera</i> sp. n. (figs 665-669, map 34) <i>Type locality.</i> — Thailand, Nakhon Ratchasima Province, Khao Yai National Park. <i>Type</i> material.— Holotype &amp;male; from the type locality, appr. 1000 m, in <i>Eucalyptus</i> leaf litter, 8.xi. l987, C.L. and P.R. Deeleman; paratypes: 3 &amp;male;, 1 &amp;female; same data, <i>Eucalyptus,</i> bamboo and evergreen forest litter, xi. 1987 and <i>xii</i>.1988. <i>Other material</i>.— C Thailand, Nakhon Nayok Province, 1 &amp;female;, Sarika waterfalls, bamboo litter, 27.iv. 1982, P.R. Deeleman. <i>Diagnosis.</i> — A species which is recognisable, also in the field, by the white spot dorsally in front of the spinnerets contrasting with the adjacent black semicircular ring. Close to <i>O. lynx,</i> it differs from that species by the abdominal pattern and in the male palp by the relatively smaller embolus, the presence of a small tegular apophysis and the upturned apophysis distally on the femur. In the vulva, the opening pouches, bursae and spermathecae are more approached to the middle than in <i>lynx.</i> Distinct from species in the <i>arma ­ tissima</i> complex by the absence of transverse bars on the abdomen, the higher number of spines on the anterior femora and tibiae and the smaller epigyne with different pathway of the insemination ducts. The male palp is of similar structure to that in the male type of <i>Palaetyra</i> luzonica, the latter lacks the ventral projection on the palpal femur and bears a larger palpal tibial apophysis. <i>O. sinifera</i> has relatively longer legs than other similarly sized species. <i>Description</i>.— MALE. Total length 3.20 mm. Carapace length 1.40 mm, width 1.20 mm, height above leg III 0.65 mm, head width 0.52 mm; abdomen 1.60 mm long, 0.80 mm wide. Leg lengths: leg I 7.70 mm (1.80-2.80-1.80-1.30), leg II 6.45 mm (1.60-2.40-1.40- 1.05), leg III 5.15 mm (1.30-1.55-1.40-0.90), leg IV 8.20 mm (2.10-2.40-2.40-1.30), palp 0.60-0.25- 0.25-0.55 mm. Carapace (fig. 665), mouthparts and legs orange, abdomen dark grey with dorsally a small orange scutum, posteriorly in front of the spinnerets a yellow area, sometimes iridescent, darkening rearwards and around scutum, leaving a white angular spot in front of the spinnerets. AME a little larger than ALE, PME the smallest, their d apart, juxtaposed to laterals. Clypeus equal to 1 eye diameter. Mouthparts fig. 666, chelicerae with 3 widely spaced promarginal and 2-3 retromarginal teeth, close together, the largest proximalmost. Leg spination (fig. 665): all femora with short dorsal spine proximally, femur I with row of 6pd spines, femur II with a row of 3pd distally, tibia I with 7­ 9 pairs of ventral spines, tibia II 7-8 pairs of ventral spines, metatarsus I 4 pairs, metatarsus II 3-4 pairs, posterior legs spineless. Abdomen (fig. 665) dorsally with small scutum, ventrally a small bulge in front of anterior spinnerets covered with short stiff setae. Palp figs 667-668, femur with flat projection ventral-apically, sperm duct occupying <i>2</i> /3 of tegulum, clawlike curved embolus and small tegular apophysis apically. FEMALE. Total length 4.40 mm. Carapace length 1.60 mm, width 1.40 mm, head width 0.70 mm, width eye region 0.50 mm; abdomen 2.80 mm long, 1.80 mm wide. Leg lengths: leg I 8.15 mm (2.00-2.90-1.85-1.40), leg II 6.35 mm (1.60-2.25-1.45-1.05), leg III 5.55 mm (1.40-1.80-1.45-0.90), leg IV 8.35 mm (2.20-2.55-2.40-1.20), palp 0.60-0.28-0.44- 0.68 mm. Carapace, eyes, mouthparts and legs as in male. Clypeus less than 1 eye diameter. Abdomen lacking scutum. Epigyne appearing as a pair of S-shaped sclerotizations, the openings in large sclerotized pouches. Vulva (fig. 669) anteriorly with a pair of large transparent bursae set between openings and spermathecae. Spermathecae thick-walled, numerous thorn-like specks appear all over their surface, further with 4 or more globules on filiform stems and a number of thorns. <i>Data on behaviour.</i> — The species was found in leaf litter of dry, secondary or exotic (<i>Eucalyptus</i>) leaf litter. One subadult male kept alive surrounded itself in a cell which was quite large in relation to the size of the spider. <i>Distribution.</i> — Only known from type locality. <i>Etymology</i>.— The Latin word <i>sinifera</i> means wearing a sinus (= pocket), referring to the large membranous sac in the vulva.
description: Published as part of <i>Deeleman-Reinhold, Christa, 2001, Forest Spiders of South East Asia With a revision of the sac and ground spiders (Araneae: Clubionidae, Corinnidae, Liocranidae, Gnaphosidae, Prodidomidae and Trochanteriidae)., pp. 400-505 in Forest Spiders of South East Asia With a revision of the sac and ground spiders- Family Liocranidae, Leiden, Netherlands :Brill Leiden; Boston; Köln</i> on pages 417-419, DOI: 10.5281/zenodo.814704