Teutamus rama, Dankittipakul, Pakawin, Tavano, Maria & Singtripop, Tippawan, 2012

Dankittipakul, Pakawin, Tavano, Maria & Singtripop, Tippawan, 2012, Seventeen new species of the spider genus Teutamus Thorell, 1890 from Southeast Asia (Araneae: Liocranidae), Journal of Natural History 46, pp. 1689-1730 : 1699-1701

Teutamus rama sp. nov.

( Figures 1 C, 5 A–E)

Diagnosis

Males of T. rama sp. nov. bear close resemblance to those of T. fertilis ( Figure 4 F) but can be distinguished by the triangular dorsal flange on the conductor ( Figure 5 D,E), the excavation on pro-apical and baso-retrolateral sides of the tegulum ( Figure 5 A), and the globular submarginal lobes on the carapace ( Figure 1 C); females can be recognized by the parallel-sided spermathecae, the short insemination ducts and the spatulate secretory ampullae ( Figure 5 G).

Type material

Holotype. ♂, Thailand: Nakhon Sri Thammarat Province: Khao Luang NP, near Karom Waterfall , 380 m, rainforest , 17 July 2005, leg. P.J. Schwendinger ( MHNG, TH-05 / 07) .

Paratypes. Khao Luang NP, Ai Khieo Waterfall , 190–250 m, semi-evergreen rainforest , 25 November 2001, 4♂, 1♀ ( MHNG, THMA-01 / 03) . Krabi Province: Ao Luk District, limestone hill c. 1 km east of Ao Luk Tai, 60–80 m, semi-evergreen rainforest , 9–10 June 2008, 4♂, 3♀ ( MHNG, THMA-08 / 04) . Pattani Province: Nam Tok Sai Khao NP, Sai Khao Waterfall , c. 20 km northwest of Yala City, 260–350 m, evergreen forest near a stream , 22 October 1999, 2♂, 1♀, ( MHNG, THA-99 / 4) ; 23 October 1999, 3♂, 4♀ ( MHNG, THA-99 / 5) . Malaysia: Perak State: Pangkor Island, 30–150 m, evergreen rainforest , Ipoh, 15–16 December 1997, 1♂, 1♀ ( MHNG, 16) . All specimens leg. P.J. Schwendinger.

Etymology

The specific epithet is an eponymous patronym (nominative form of a noun) in honour of His Majesty King Bhumibol Adulyadej the Great of Thailand, King Rama IX on the auspicious celebration of His Majesty’s 84th Birthday in December, 2011.

Description

Male (holotype). Total length 4.82; prosoma 2.30 long, 1.52 wide; opisthosoma 2.52 long, 1.16 wide. Leg formula: 1423; I 10.76 (2.42, 0.98, 3.42, 2.36, 1.58); II 8.52 (2.00, 0.98, 2.64, 1.82, 1.08); III 6.88 (1.56, 0.82, 2.04, 1.54, 0.92); IV 10.22 (2.52, 0.92, 2.92, 2.50, 1.36). Spination: Leg I: Femora p1-1-1; tibiae p9 r9; metatarsi p5 r5. Leg II: Tibiae p7 r7; metatarsi p4 r6. Carapace dark reddish brown; submarginal lobes triangular, their apices globular ( Figure 1 C). Sternum dark reddish brown. Legs hairless, bi-coloured: Femora to tarsi orange-brown, other segments brown. Opisthosoma elongate-ovoid. Dorsal scutum brown, covering almost entire length of opisthosoma.

Palp ( Figure 5 A–E): RTA broad in ventral view, its apex blunt, anterior margin with weakly sclerotized, transparent lamina. DTA digitiform. Tegulum slightly excavated on pro-apical and baso-retrolateral sides. Conductor triangular, its apex sharply pointed, provided with triangular dorsal flange. Embolic base clearly visible.

Female (paratype, MHNG, THMA-01/03). Total length 5.62; prosoma 2.50 long, 1.52 wide; opisthosoma 3.12 long, 1.54 wide. Leg formula: 1423; I 11.30 (2.52, 0.94,

3.84, 2.52, 1.48); II 8.56 (1.96, 0.94, 2.92, 1.62, 1.12); III 7.32 (1.62, 0.84, 2.10, 1.70,

1.06); IV 10.80 (2.52, 0.94, 3.12, 2.72, 1.50). Spination: Leg I: Femora p1-1-1; tibiae p10 r10; metatarsi p6 r6. Leg II: Tibiae p9 r9; metatarsi p5 r5. General appearance as in male except submarginal lobes on carapace broader at base, their apices blunt; dorsum of opisthosoma pale.

Genitalia ( Figure 5 F,G): Epigyne with widely separated circular copulatory orifices situated anteriorly. Insemination ducts short and curved, connected to anterior lateral portion of spermathecae. Secretory ampullae spatulated, originating terminally on insemination ducts. Spermathecae elongated, lateral margins parallel-sided, situated close to one another, anteriorly with large apical glandular pore. Fertilization ducts lanceolated.

Distribution

Southern Thailand and Malaysia ( Figure 18).

Figures

Figure 1. Teutamus orthogonus sp. nov., male holotype (A). Teutamus jambiensis, male paratype (MHNG) (B). Teutamus rama sp. nov., male holotype (C). Teutamus seculatus sp. nov., male holotype (D). Teutamus brachiatus sp. nov., male holotype (E). Teutamus lioneli sp. nov., male paratype (F). (A – F) Prosoma, dorsal.

Figure 4. Teutamus politus, female holotype (D), male (A – C) and female (E) from southern Thailand. Teutamus fertilis, male paratype (MHNG) (F). (A, F) Male palp, ventral and (B) retrolateral; (C) conductor, prolateral; (D) epigastric region, ventral; (E) internal genitalia, dorsal. Abbreviations: C, conductor; DTA, disto-retrolateral tibial apophysis; EB, embolic base; FD, fertilization duct; ID, insemination duct; RTA, retrolateral tibial apophysis; S, spermatheca; SA, secretory ampulla; SD, sperm duct; ST, subtegulum. Scale bars 0.25 mm.

Figure 5. Teutamus rama sp. nov., male holotype (A – E), female paratype (F, G). (A) Male palp, ventral, (B) prolateral and (C) retrolateral; (D) apex of tegulum showing conductor and embolic tip, prolateral; (E) retrolateral; (F) epigastric region, ventral; (G) internal genitalia, dorsal. Abbreviations: AC, anterior concavity on RTA; E, embolus; L, transparent lamina on RTA; PTA, prolateral tibial apophysis; ST, subtegulum. Scale bars 0. 2 5 mm.