Phonotimpus talquian, Chamé-Vázquez & Ibarra-Núñez & Jiménez, 2018

Chamé-Vázquez, David, Ibarra-Núñez, Guillermo & Jiménez, Maria Luisa, 2018, Redescription of Phonotimpus separatus Gertsch & Davis, 1940 (Araneae: Phrurolithidae) and description of two new species of Phonotimpus from Mexico, Zootaxa 4407 (2), pp. 213-228 : 221-225

Phonotimpus talquian sp. nov.

Figs 7–11

Piabuna sp1. Ibarra-Núñez et al. (2011): 1192, fig. 6a.

Type material. Holotype ♂: MEXICO: Chiapas, Municipio de Unión Juárez, Ejido Talquián (15°05'15.00"N, 92°05'56.00"W, 2010 m), 10 March 2017, in leaf litter of cloud forest, leg. G. Angulo, D. Chamé, E. Chamé, H. Montaño, G. Suárez (ECOTAAR-8994).

Allotype ♀: same data except 7 March 2017 (ECOTAAR-8992).

Paratypes: 1♀, 1♂, same data as holotype ( AMNH) ; 1♂, same data except 20 April 2016, D. Chamé, E. Chamé, H. Montaño, G. Suárez ( CNAN-T1215 ) ; 1♀, same data except 25 May 2016 ( CNAN-T1216 ) ; 1♂, same data except 20 April 2016 (CARCIB-208) ; 1♀, same data except 25 May 2016 (CARCIB-207) ; 2♂, same data except 23 February 2007, leg. D. Chamé, J.A. García (ECOTAAR-8225) ; 1♀, same data except 27 April 2007 (ECOTAAR-8251) ; 1♀, same data except 25 May 2007 (ECOTAAR-8267) ; 1♀, same data except (15°05'38.00"N, 92°06'06.00"W, 2044 m), 30 March 2007 (ECOTAAR-8244) ; 3♂, 3 juv., same data as holotype except 7 March 2017 (ECOTAAR-8993).

Etymology. The specific epithet is noun in apposition and refers to the type locality.

Diagnosis. The females of P. talquian sp. nov. differ from P. eutypus by having two oval atria ( Fig. 10A ) and the dorsal scutum covering more than half of the opisthosoma ( Fig. 7C ), while P. eutypus has two slit-like atria ( Gertsch & Davis 1940, fig 27) and the dorsal scutum covers only the base of the opisthosoma. The females of P. talquian sp. nov. differ from P. separatus by having two large atria; S1 lie ectal to the CD, FD arise from the bottom of the S1 ( Figs 10A–D ), the carapace is almost as wide as long and the opisthosomal scutum is wide and long ( Fig. 7C ), while in P. separatus there is only one small atrium; S1 lie posterior to the CD, FD arise from the anterior part of the S1 ( Figs 1E–H ), the carapace is slightly longer than wide, and the opisthosomal scutum is narrow and short ( Figs 1A, C ). The females of P. talquian sp. nov. differ from P. pennimani sp. nov. by having an epigynum with deeper atria, CO not visible in ventral view (10A, 10C, 11C), S1 liver-shaped and with a small but evident S2 ( Figs 10B, 10D ), while in P. pennimani sp. nov. the atria are shallow, the CO visible in ventral view, the S1 oval, and they lack S2. Males differ from P. pennimani sp. nov. by the shape of the RTA, which is conical and tapering ( Figs 8A , 9A ), the DTA that is more slender than the RTA and S-shaped ( Fig. 9B ), and by the C with uniform width in ventral view (8B), while in P. pennimani sp. nov. the distal part of the RTA is very slender, the shape of DTA is finger-like and the C tip is clearly widened.

Description. Male holotype. Carapace yellowish-brown, with black markings; endites and labium yellowish, sternum yellowish-brown. Legs yellowish splattered with dark markings, except metatarsi I–IV, which are lighter than other segments. Dorsum of opisthosoma black, with five clear chevrons decreasing in size near posterior margin, with bright dark brown scutum. Venter pale yellow, surrounded laterally with black and with two longitudinal black lines from epigastric furrow to spinnerets ( Figs 7A–B ). Total length 2.80; carapace 1.28 long, 1.22 wide; opisthosoma 1.52 long, 1.00 wide. Carapace, AER and PER as in P. pennimani . Eye sizes and interdistances: AME 0.08, ALE 0.10, PME 0.07, PLE 0.10. AME-AME 0.05, AME-ALE 0.01, PME-PME 0.11, PME-PLE 0.03, ALE-PLE 0.07. MOA 0.23 long, front width 0.21, back width 0.27. Clypeus height 0.09.

Chelicerae teeth as in P. pennimani sp. nov. and frontal spines on paturon as in P. separatus . Labium wider than long (0.19/0.13), endites longer than wide (0.37/0.25), sternum slightly longer than wide (0.79/0.71). Opisthosoma oval, with dorsal scutum covering 3/4 of the opisthosoma. Leg measurements: I 5.07 (1.33, 0.49, 1.41, 1.25, 0.59), II 4.25 (1.17, 0.47, 1.02, 0.99, 0.60), III 3.94 (1.07, 0.42, 0.81, 1.02, 0.62), IV 5.56 (1.47, 0.47, 1.27, 1.54, 0.81). Leg formula and spination: as in male of P. pennimani sp. nov. Tarsal claw, onychium and tarsal organ ( Figs 9C–E ) as in P. pennimani sp. nov. Palpus: femur with one dorso-distal spine, with a weak depression on distal third of ectal side, with cluster of setae on mesal side and inconspicuous ventral apophysis between those as a low ledge ( Figs 8C–D ). Patella with basal mesal spine. RTA long and tapering ( Figs 8A , 9A ), more sclerotized near the tip. DTA more slender than RTA, S-shaped in dorsal view ( Figs 9B ). Cb with few short thick setae on dorsal side (arrows in Figs 9A–B ), bordering a longitudinal groove in its basal half (asterisk in Fig. 9A ). T large, protruding ectally at its proximal side ( Fig. 8B ). Distal half of E and EBP hidden by C ( Fig. 8B ). E and C about same length, EBP pointed, slightly shorter than E, with some spines on its mesal side (arrows in Fig. 11B ). Tip of C concave on its dorsal side ( Fig. 11B ).

Female allotype. Coloration similar to male, except thoracic region bordered with black ( Figs 7C–D ). Total length 2.78; carapace 1.28 long, 1.20 wide, opisthosoma 1.50 long, 1.00 wide. Carapace, AER and PER as in male. Eye sizes and interdistances: AME 0.08, ALE 0.07, PME 0.06, PLE 0.07. AME-AME 0.03, AME-ALE 0.01, PME-PME 0.10, PME-PLE 0.05, ALE-PLE 0.08. MOA 0.21 long, front width 0.20, back width 0.25. Clypeus height 0.09. Chelicerae teeth and frontal spines on paturon as in male. Labium wider than long (0.19/0.12), endites longer than wide (0.37/0.25), sternum longer than wide (0.78/0.69). Dorsal scutum covering slightly more than half of opisthosoma. Leg measurements: I 4.86 (1.30, 0.51, 1.36, 1.17, 0.52), II 4.06 (1.13, 0.46, 1.01, 0.93, 0.53), III 3.73 (1.01, 0.41, 0.76, 0.98, 0.57), IV 5.08 (1.33, 0.45, 1.20, 1.38, 0.72). Leg formula and spination as in male.

Tarsal organ ( Figs 9F–H ) and claw ( Fig. 11D ) as in P. pennimani sp. nov. Palpus: as in female of P. pennimani sp. nov. Epigynum: with pair of deep atria separated by roughly a diameter of an atrium, CO not visible in ventral view ( Figs 10A, 10C , 11C ); each atrium looks like an inverted cup (atrial hood) and is visible through integument (asterisk in Figs 10C , 11C ). In dorsal view, S1 lie ectal to CD, liver-shaped and larger than S2 ( Figs 10B, 10D ). B membranous, oval-shaped, larger than S1 ( Figs 10C–D ). CO located deep on mesal side of atrial hood ( Fig. 10D ). FD arise from bottom of S1 ( Figs 10B, 10D ).

Variation. Males (n=8), total length 2.35–2.61; carapace 1.17–1.25 long, 0.98–1.17 wide. The male scutum ranges from occupying roughly 3/5 to 3/4 of opisthosoma length. Females (n=4), total length 2.97–3.37; carapace 1.27–1.42 long, 1.15–1.28 wide. In females, the scutum ranges from a half of the opisthosoma to slightly more. Some specimens have slightly different pigmentation on the opisthosoma venter: the pale-yellow lines between the black lines and black contour can be dotted, or the pair of black lines can be faded. As in P. pennimani sp. nov., some specimens of P. talquian sp. nov. have one more or one less macrosetae on the femur or metatarsus, or both, but the leg in the opposite side has the number of macrosetae noted in the holotype.

Habitat. All the specimens were captured in leaf litter of a montane cloud forest that is part of the Tacaná Volcano Biosphere Reserve.

Distribution. Known only from the type locality in Chiapas, México ( Fig. 12 ).

Figures

FIGURE 7. Phonotimpus talquian sp. nov. A Male habitus, dorsal view; B Male habitus, ventral view; C Female habitus, dorsal view; D Female habitus, ventral view.Scale bars:0.5 mm.

FIGURE 8. Phonotimpus talquian sp. nov. A Right male palpus, retrolateral view; B Left male palpus, ventral view; C Right male femur palpus, retrolateral view; D Same, ventral view.

FIGURE 9. Phonotimpus talquian sp. nov. A Right male palpus, retrolateral view (arrow on short-thick seta, asterisk on groove of cymbium); B Left male palpus, RTA and DTA, dorsal view (arrows on short-thick setae); C Male tarsal organ, leg I; D Male tarsal organ, leg III; E Male tarsal organ, leg IV; F Female tarsal organ,leg II; GFemale tarsal organ, leg III; H Female tarsal organ, leg IV.

FIGURE 10. Phonotimpus talquian sp. nov. A, C Epigynum, ventral view; B, D Epigynum, dorsal view (asterisk on internal atrial hood).

FIGURE 11. Phonotimpus talquian sp. nov. A Right male palpus, prolateral-apical view of dissected bulb; B Right male palpus, prolateral-apical view of dissected bulb (arrows on spines of EBP); C Epigynum intact, ventral view (asterisk on internal atrial hood); D Female left tarsus IV, lateral view (arrow on tactile hair).

FIGURE 12. Distribution map of Phonotimpus spp.: Black square, P. eutypus; Black star, P. separatus; White triangle, P. pennimani sp. nov.; Black circle, P.talquian sp.nov.

FIGURE1. Female of Phonotimpus separatus. A, C Habitus, dorsal view; B, D Habitus, ventral view; E–H Epigyne, EIntact, ventral view, F Dissected, ventral view, G Dissected, dorsal view, H Dorsal view.Scale bars (A–D):0.25 mm.