Eupoa zabkai, 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 zabkai sp. nov.

Figs 11 , 12

Type material.

Holotype ♂ (IZCAS-Ar44209), Vietnam: Vinh Phuc Province: Tam Dao National Park (21°30.52'N, 105°34.26'E, ca. 510 m), 19.IX.2007, D.S. Pham leg. Paratypes 1♀ (IZCAS-Ar44210), same data as holotype; 1♀ (IZCAS-Ar44211), Tam Dao National Park (21°29.43'N, 105°37.01'E, ca. 1080 m), 12.IV.2007, same collector; 2♂ (IZCAS-Ar44212-44213), Tam Dao National Park (21°31.25'N, 105°33.50'E, ca. 690 m), 13.VI.2007, same collector; 2♀ (IZCAS-Ar44214-44215), Tam Dao National Park (21°29.03'N, 105°37.19'E, ca. 790 m), 18.VII.2007, same collector; 1♀ (IZCAS-Ar44216), Tam Dao National Park (21°29.23'N, 105°37.20'E, ca. 870 m), 19.VII.2007, same collector; 1♀ (IZCAS-Ar44217), Tam Dao National Park (21°28.34'N, 105°38.09'E, ca. 1010 m), 22.VIII.2007, same collector; 1♀ (IZCAS-Ar44218), Tam Dao National Park (21°29.03'N, 105°37.19'E, ca. 790 m), 17.X.2007, same collector; 1♀ (IZCAS-Ar44219), Tam Dao National Park (21°30.52'N, 105°34.26'E, ca. 510 m), 13.XI.2007, same collector.

Etymology.

The species name is a patronym in honor of Prof. Marek Żabka (Siedlce, Poland), a leading arachnologist in jumping spiders, who contributed significantly to the taxonomy of jumping spiders from Vietnam; noun (name) in genitive case.

Diagnosis.

The male of Eupoa zabkai sp. nov. resembles E. jingwei Maddison & Zhang, 2007 in the general shape of palp, but it can easily be distinguished by the presence of an RFA (Fig. 11B ), whereas it is absent in E. jingwei ( Maddison et al. 2007: fig. 9). The species also resembles E. prima Żabka, 1985, but it differs in: (1) the RPA being shorter than the patella in retrolateral view and with a short, inner division (Fig. 11B-D ), but the RPA is almost 1.5 × longer than the patella and lacks an inner division in E. prima ( Żabka 1985: figs 161-163); (2) the epigyne has a dorsal plate (Fig. 12B, C ), whereas this is indistinct in E. prima ( Żabka 1985: fig. 169); (3) the copulatory ducts are connected to the base of the spermathecae (Fig. 12B, C ), whereas in E. prima , they are lateral to the spermathecae ( Żabka 1985: fig. 169).

Description.

Male (Figs 11 , 12D, E, G, H ). Total length 2.87. Carapace 1.37 long 1.26 wide. Abdomen 1.53 long, 1.03 wide. Clypeus 0.09 high. Eye sizes and inter-distances: AME 0.41, ALE 0.28, PLE 0.16, AERW 1.31, PERW 1.15, EFL 0.76. Legs: I 2.37 (0.73, 0.38, 0.55, 0.48, 0.23), II 2.07 (0.63, 0.33, 0.45, 0.43, 0.23), III 2.02 (0.58, 0.30, 0.43, 0.48, 0.23), IV 2.99 (0.93, 0.38, 0.80, 0.63, 0.25). Carapace elevated, pale to brown except bilateral sides of eye field and posterior eyes bases dark; fovea indistinct. Chelicerae yellow, with two promarginal and four retromarginal teeth. Endites, labium and sternum paler than chelicerae. Legs pale to yellow, with one ventral spine on tibiae I and three pairs of ventral spines on metatarsi I. Abdomen elongate-oval, dorsum yellow to brown, with three longitudinal stripes anteriorly, followed by alternating transverse brown and yellow stripes, covered entirely by scutum; venter pale. Palp (Fig. 11A-D ): femur enlarged, with sub-square retrolateral apophysis bearing finger-shaped antero-marginal division; patella sclerotized, longer than wide; RPA well-developed, broadened medially, with irregular distal division and short, bar-shaped inner division; tibia short, with flat, broad, irregularly-shaped retrolateral apophysis and triangular dorsal apophysis with pointed tip; bulb swollen, almost oval; MA weakly sclerotized at base, slightly curved medially, hooked distally; TA well-developed, irregularly-shaped,> 4 × longer than wide, forming ridge distally; embolus long, flagelliform.

Female (Fig. 12A-C, F ). Total length 2.81. Carapace 1.29 long 1.17 wide. Abdomen 1.67 long, 1.29 wide. Clypeus 0.08 high. Eye sizes and inter-distances: AME 0.38, ALE 0.26, PLE 0.21, AERW 1.22, PERW 1.08, EFL 0.69. Legs: I 2.57 (0.78, 0.43, 0.63, 0.50, 0.23), II 2.15 (0.68, 0.33, 0.48, 0.43, 0.23), III 2.19 (0.68, 0.33, 0.45, 0.50, 0.23), IV 3.34 (1.10, 0.43, 0.88, 0.68, 0.25). Habitus (Fig. 12F ) similar to that of male except without dorsal abdominal scutum, and with three pairs of ventral spines on tibiae I. Epigyne (Fig. 12A-C ): slightly wider than long, with pair of antero-marginal depressions, large, irregular atrium, and linguiform dorsal plate; copulatory openings anteriorly located, separated from each other by more than atrial width, with C-shaped margins; copulatory ducts long, forming complex coils, connected to base of spermathecae; spermathecae sub-oval, separated from each other by ~ 2/3 of their width.

Distribution.

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

Figures

Figure 11. Male palp of Eupoa zabkai sp. nov., holotype A prolateral B retrolateral C ventral D ventro-retrolateral. Scale bars: 0.1 mm. Abbreviations: DTA - dorsal 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 12. Eupoa zabkai sp. nov., male holotype and female paratype A, B epigyne, ventral C vulva, dorsal D holotype habitus, dorsal E ditto, ventral F female paratype habitus, dorsal G holotype carapace, frontal H holotype chelicera, posterior. Scale bars: 0.1 mm (A-C, H); 0.5 mm (D-G). Abbreviations: AR - atrial ridge; CD - copulatory duct; CO - copulatory opening; DP - dorsal epigynal plate; S - spermatheca.