Eupoa maddisoni, Wang & Li & Pham, 2023

Wang, Cheng, Li, Shuqiang & Pham, Dinh-Sac, 2023, Thirteen species of jumping spiders from northern Vietnam (Araneae, Salticidae), ZooKeys 1148, pp. 119-165 : 119

Eupoa maddisoni sp. nov.

Figs 7 , 8

Type material.

Holotype ♂ (IZCAS-Ar44199), Vietnam: Vinh Phuc Province: Tam Dao National Park (21°30.36'N, 105°33.49'E, ca. 440 m), 16.VII.2007, D.S. Pham leg. Paratypes 3♀ (IZCAS-Ar44200-44202), same data as holotype; 1♀ (IZCAS-Ar44203), Tam Dao National Park (21°26.27'N, 105°37.41'E, ca. 310 m), 14.IV.2007, same collector; 1♂1♀ (IZCAS-Ar44204-44205), Tam Dao National Park (21°31.57'N, 105°33.15'E, ca. 1010 m), 21.VIII.2007, same collector; 1♂ (IZCAS-Ar44206), Tam Dao National Park (21°31.53'N, 105°32.37'E, ca. 500 m), 18.X.2007, same collector.

Etymology.

The specific name is a patronym in honor of Prof. Wayne P. Maddison (Vancouver, Canada), a leading arachnologist in jumping spiders, who has made significant contributions to the taxonomy of salticids worldwide; noun (name) in genitive case.

Diagnosis.

The male of Eupoa maddisoni sp. nov. closely resembles E. nezha Maddison & Zhang, 2007 in having a similar palp, especially the distally bifurcated RPA, but it can be easily distinguished by the following: (1) the shorter ramus of the RPA is ~ 1/2 the longer ramus length in retrolateral view (Fig. 7B ), whereas it is <1/10 of the longer ramus length in E. nezha ( Maddison et al. 2007: fig. 2); (2) the TA has a curved dTA (Fig. 7C, D ), whereas this is absent in E. nezha ( Maddison et al. 2007: figs 1, 3). The female of this new species resembles E. prima Żabka, 1985 in having similar habitus markings and a similar epigyne, but it can be easily distinguished by the spermathecae, which are oval and separated from each other by approximately their width (Fig. 8B ), whereas they are almost pyriform and touching in E. prima ( Żabka 1985: fig. 169).

Description.

Male (Figs 7 , 8C, D, F, G ). Total length 1.60. Carapace 0.86 long 0.78 wide. Abdomen 0.78 long, 0.60 wide. Clypeus 0.05 high. Eye sizes and inter-distances: AME 0.24, ALE 0.16, PLE 0.14, AERW 0.79, PERW 0.73, EFL 0.49. Legs: I 1.36 (0.43, 0.20, 0.30, 0.25, 0.18), II 1.27 (0.40, 0.18, 0.28, 0.23, 0.18), III 1.24 (0.38, 0.18, 0.25, 0.25, 0.18), IV 1.69 (0.60, 0.23, 0.33, 0.33, 0.20). Carapace pale to dark yellow except bilateral sides of eye field, and posterior eyes bases dark, covered with white and pale setae, with pair of indistinct dark patches medially on eye field, and tapered, longitudinal, sub-triangular patch extending from the middle of PMEs to posterior margin; fovea indistinct. Chelicerae pale, with two promarginal and three retromarginal teeth. Endites sub-square. Labium darker than chelicerae and endites. Sternum almost heart-shaped, with straight anterior margin. Legs pale to green-brown, with three pairs of ventral spines on metatarsi I. Abdomen elongated, dorsum yellow to dark brown, with pair of longitudinal brown patches anteriorly followed by three pairs of transverse, dark brown patches, covered entirely by scutum; venter pale, without distinct markings. Palp (Fig. 7A-D ): femur longer than wide, with blunt, sub-triangular retrolateral apophysis; patella sclerotized, with sub-trapeziform ventral apophysis, and distally bifurcated retrolateral apophysis acutely narrowed anteromedially, and with shorter ramus ~ 1/2 the longer ramus length; tibia short, with flat, irregular retrolateral apophysis and tapered, apically pointed dorso-retrolateral apophysis; bulb sub-oval; MA elongated, forming small hook at distal end; TA complex, with sclerotized, curved, basal division; embolus slender, flagelliform, partly visible.

Female (Fig. 8A, B, E ). Total length 2.05. Carapace 0.91 long 0.83 wide. Abdomen 1.15 long, 0.91 wide. Clypeus 0.06 high. Eye sizes and inter-distances: AME 0.25, ALE 0.17, PLE 0.15, AERW 0.83, PERW 0.80, EFL 0.51. Legs: I 1.83 (0.55, 0.30, 0.40, 0.38, 0.20), II 1.52 (0.45, 0.23, 0.30, 0.34, 0.20), III 1.49 (0.45, 0.20, 0.30, 0.34, 0.20), IV 2.09 (0.70, 0.25, 0.52, 0.40, 0.22). Habitus (Fig. 8E ) similar to that of male except without dorsal abdominal scutum and with three pairs of ventral spines on tibiae I. Epigyne (Fig. 8A, B ): slightly wider than long, with large, irregular atrium and rectangular dorsal plate; copulatory openings located anteriorly, with C-shaped margins, separated from each other by ~ 3.5 × the spermathecal width; copulatory ducts long, following a complex path; spermathecae oval, separated from each other ~ 3/4 of their width.

Distribution.

Known only from the type locality in Vinh Phuc Province, Vietnam.

Figures

Figure 7. Male palp of Eupoa maddisoni sp. nov., holotype A prolateral B retrolateral C ventral D ventro-retrolateral. Scale bars: 0.1 mm. Abbreviations: dTA - division of terminal apophysis; dRTA - dorso-retrolateral tibial apophysis; E - embolus; MA - median apophysis; RFA - retrolateral femoral apophysis; RPA - retrolateral patellar apophysis; RTA - retrolateral tibial apophysis; TA - terminal apophysis; VPA - ventral patellar apophysis.

Figure 8. Eupoa maddisoni sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C holotype habitus, dorsal D ditto, ventral E female paratype habitus, dorsal F holotype carapace, frontal G holotype chelicera, posterior. Scale bars: 0.1 mm (A, B, G); 0.5 mm (C-F). Abbreviations: AR - atrial ridge; CD - copulatory duct; CO - copulatory opening; DP - dorsal epigynal plate; S - spermatheca.