Jacaena angoonae Dankittipakul, Tavano &amp; Singtripop, 2013, sp. nov.
Creators: name: Dankittipakul, Pakawin
name: Tavano, Maria
name: Singtripop, Tippawan
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Liocranidae
Jacaena
Jacaena angoonae

description: <i>Jacaena angoonae</i> sp. nov. (Figures 2 D, 7 E, 8 E, 14 A – C) <i>Type material</i> Holotype: &amp;female;, Thailand: Huay Nam Dang NP, joint border between Mae Taeng District of Chiang Mai Province and Pai District of Mae Hong Son Province, Doi Chang, evergreen hill forest, 1930 m, extraction of soil sample, 4 June 1983, P.J. Schwendinger leg. (MHNG, PDC 4650). Paratypes: Same data as holotype, 3&amp;female; (NHML &amp; THNM, PDC 4651). <i>Diagnosis</i> Females of this new species bear very close resemblance to those of <i>J. schwendingeri</i> comb. nov. in having large, medially situated copulatory orifices, and similar shape of spermathecae. However, in <i>J. angoonae</i> sp. nov. the copulatory orifices are teardrop-shaped (Figure 7 E) and the insemination ducts are tubular without any modification (Figure 8 E) whereas in <i>J. schwendingeri</i> comb. nov. the orifices are subcircular (Figure 7 A) and the median part of the ducts is greatly enlarged (Figure 8 F). <i>Etymology</i> The specific epithet is an eponymous patronym (genitive form of a noun) dedicated to Dr Angoon Lewvanich, a prolific Thai taxonomist. <i>Description</i> <i>Female</i> (holotype). Total length 7.5. Carapace 3.0 long, 2.4 wide. Opisthosoma 4.5 long, 2.6 wide. Eye sizes and interdistances: AME 0.10; ALE 0.13; PME 0.08; PLE 0.11; AME – AME 0.06; AME –ALE 0.05; PME–PME 0.13; PME–PLE 0.16. MOQ 0.36 long; front width 0.28; back width 0.33. Leg formula 4123. Spination. Leg I: femur 1–1pl; tibia 8pl 8rl; metatarsus 4pl 4rl. Leg II: tibia 7pl 6rl; metatarsus 4pl 4rl. Leg III: tibia 1–1– 1v 1pl; metatarsus 1– 1v 1pl. Leg IV: tibia 1–1–1–1– 2v 1–1rl; metatarsus 1–1– 1v 1pl 1rl. Leg measurements: Leg I 8.6 (2.5, 1.0, 2.3, 1.85, 1.0); II 7.7 (2.2, 0.9, 1.9, 1.7, 1.0); III 6.1 (1.7, 0.8, 1.4, 0.85); IV 9.2 (2.5, 1.0, 2.1, 2.4, 1.2). Colouration and pattern (Figure 2 D): Carapace dark chestnut-brown; integument coarsely granulated. Chelicerae, sternum, labium and gnathocoxae dark reddishbrown; coxae, trochanters and femora dark brown; patellae and tibiae brown, tibiae orange distally; metatarsi and tarsi I–II light brown, III–IV orange. Opisthosoma ovoid; dorsum with pattern consisting of paired, oblique patches, followed by three chevrons on dark grey background. Copulatory organ (Figures 7 E, 8 E, 14 A – C): Copulatory orifices teardrop-shaped (Figure 14 A). Insemination ducts elongated, loosely coiled (Figure 14 B); proximal duct connected to copulatory orifice semi-transparent (Figure 8 E), forming sigmoid arch; secretory ampullae situated on posterior surface of proximal ducts; distal half of duct ascending anteriorly then descending posteriorly to connect with spermathecae. Spermathecae elliptical, anterior part distinctly enlarged, more or less spherical with glandular pore (Figure 14 B). <i>Male</i>. Unknown. <i>Jacaena angoonae</i> sp. nov. inhabits evergreen hill forest of Doi Chang (1930 m). This new species marks the highest altitudinal record among members of the genus <i>Jacaena</i>. <i>Distribution</i> Known only from the type locality, Mae Hongson Province, northern Thailand.
description: Published as part of <i>Dankittipakul, Pakawin, Tavano, Maria &amp; Singtripop, Tippawan, 2013, Revision of the spider genus Jacaena Thorell, 1897, with descriptions of four new species from Thailand (Araneae: Corinnidae), pp. 1539-1567 in Journal of Natural History 47 (23)</i> on pages 1562-1565, DOI: 10.1080/00222933.2012.763059, http://zenodo.org/record/556127