Eupoa maidinhyeni, 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 maidinhyeni sp. nov.

Figs 5 , 6

Type material.

Holotype ♂ (IZCAS-Ar44192), Vietnam: Ninh Binh Province: Cuc Phuong National Park, Disturbed Forest (20°16.07'N, 105°42.04'E, ca. 250 m), 18.VIII.2007, D.S. Pham leg. Paratypes 1♀ (IZCAS-Ar44193), same data as holotype; 2♀ (IZCAS-Ar44194-44195), Cuc Phuong National Park (20°16.16'N, 105°41.32'E, ca. 250 m), 9.V.2007, same collector; 1♀ (IZCAS-Ar44196), Cuc Phuong National Park (20°23.12'N, 105°33.34'E, ca. 200 m), 7.VI.2007, same collector; 1♀ (IZCAS-Ar44197), Disturbed Forest (20°22.27'N, 105°33.05'E, ca. 340 m), 6.XI.2007, same collector; 1♂ (IZCAS-Ar44198), Cuc Phuong National Park (20°22.27'N, 105°33.05'E, ca. 200 m), 6.II.2008, same collector.

Etymology.

The specific name is after ichthyologist Mai Dinh Yen, born in 1933 in Ba Vi, Hanoi; noun (name) in genitive case.

Diagnosis.

Eupoa maidinhyeni sp. nov. can be easily distinguished from other congeners by the well-developed CTA, which extends beyond the cymbial retromargin in ventral view, the thick, sickle-shaped embolus, and the circled atrial ridges (Figs 5C , 6A ), whereas the CTA does not extend beyond the cymbial margin, the embolus is slender, flagelliform, and lacks similar circled atrial ridges in the other species ( Metzner 2023).

Description.

Male (Figs 5 , 6C, D, F, G ). Total length 2.13. Carapace 1.05 long, 0.93 wide. Abdomen 1.09 long, 0.72 wide. Clypeus 0.05 high. Eye sizes and inter-distances: AME 0.30, ALE 0.21, PLE 0.18, AERW 0.99, PERW 0.85, EFL 0.57. Legs: I 1.81 (0.55, 0.28, 0.40, 0.38, 0.20), II 1.58 (0.50, 0.25, 0.33, 0.30, 0.20), III 1.61 (0.48, 0.25, 0.30, 0.38, 0.20), IV 2.14 (0.70, 0.28, 0.53, 0.43, 0.20). Carapace longer than wide, pale to dark yellow except the sides of eye field and posterior eyes bases dark, with pair of irregular dark patches medially on eye field, and longitudinal, central, yellow patch extending across thorax; fovea indistinct. Chelicerae pale, with two promarginal and four retromarginal teeth. Endites, sternum colored as chelicerae. Labium slightly darker than endites. Legs pale to yellow, with one ventral spine on tibiae I, and three pairs of ventral spines on metatarsi I. Abdomen elongated, dorsum pale yellow to green-brown, covered wholly by scutum, with pair of longitudinal, irregular, pale yellow stripes on ~ 3/4 of length, and separated by longitudinal, irregular, green brown central stripes and followed by transverse, pale yellow, posterior stripe; venter pale, without markings. Palp (Fig. 5A-D ): femur longer than wide, with L-shaped disto-retrolateral apophysis; patella slightly longer than wide, with slender, curved, apically pointed retrolateral apophysis broadened proximally and more than half cymbial length in retrolateral view; tibia very short, with flat, broad retrolateral apophysis pointed apically; cymbium acutely tapered, strongly curved ventrally at distal 1/4; bulb almost round in ventral view; MA extending retrolaterally, with membranous base, forming hook at distal end; TA flat, slightly curved medially in ventral view, tapered to rather pointed tip distally; CTA strongly sclerotized, originates from antero-prolateral portion of bulb, extending retrolaterally and beyond retrolateral cymbial margin distally; embolus long, partly invisible, circled and sickle-shaped.

Female (Fig. 6A, B, E ). Total length 2.44. Carapace 1.06 long, 0.96 wide. Abdomen 1.38 long, 0.96 wide. Clypeus 0.05 high. Eye sizes and inter-distances: AME 0.31, ALE 0.21, PLE 0.18, AERW 1.00, PERW 0.95, EFL 0.58. Legs: I 1.86 (0.55, 0.28, 0.45, 0.38, 0.20), II 1.63 (0.50, 0.25, 0.35, 0.33, 0.20), III 1.66 (0.50, 0.25, 0.33, 0.38, 0.20), IV 2.34 (0.75, 0.33, 0.58, 0.48, 0.20). Habitus (Fig. 6E ) similar to that of male except paler, without dorsal abdominal scutum, and with three pairs of ventral spines on tibiae I. Epigyne (Fig. 6A, B ): wider than long, with pair of round atria with circled, and arc-shaped ridges; copulatory openings posteriorly located, separated from each other by ~ 2 × their width; copulatory ducts short, bent medially, connected to mediolateral margins of spermathecae; spermathecae elongate-oval.

Distribution.

Known only from the type locality in Ninh Binh Province, Vietnam.

Figures

Figure 5. Male palp of Eupoa maidinhyeni sp. nov., holotype and paratype A holotype, prolateral B ditto, retrolateral C ditto, ventral D paratype bulb, apical. Scale bars: 0.1 mm. Abbreviations: E - embolus; CTA - compound terminal apophysis; MA - median apophysis; RFA - retrolateral femoral apophysis; RPA - retrolateral patellar apophysis; RTA - retrolateral tibial apophysis; TA - terminal apophysis.

Figure 6. Eupoa maidinhyeni 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; S - spermatheca.