Chalcovietnamicus marusiki Yu, Maddison & Zhang 2023, sp. nov.
Creators: name: Yu, Kun
name: Hoang, Quang Duy
name: Maddison, Wayne P.
name: Zhang, Junxia
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Chalcovietnamicus
Chalcovietnamicus marusiki

description: Chalcovietnamicus marusiki Yu, Maddison & Zhang, sp. nov. (ḚDZffiḋff)
Figs 41–59, 66–69, 143
Type material. Holotype: ♁ (UBCZ; KYU-SAL410), MALAYSIA: Sarawak, Mulu National Park, Summit Trail near Camp 1, 4.0478– 4.0480°N, 114.8615– 114.8616°E, 170–200 m elev., 22 March 2012, leg. E.K. Piascik, A. Ang, & L. Andyson, WPM#12-074.
Paratypes: 1♀ (UBCZ; KYU-SAL412), same data as holotype; MALAYSIA: 1♁ 2♀ (UBCZ; KYU-SAL409), Sarawak, Mulu National Park, Summit Trail near Camp 1, 4.0489– 4.0491°N, 114.8601– 114.8606°E, 270 m elev., 21 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-070; 1♁ (UBCZ; KYU-SAL407), Same locality, Nightwalk Trail, 4.0455– 4.0458°N, 114.8157– 114.8158°E, 50 m elev., 24 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-092; 1♁ (UBCZ; KYU-SAL451), Same locality, Clearwater Cave Trail, 4.0584– 4.0589°N, 114.8288– 114.8289°E, 60 m elev., 14 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12- 029.
Other material examined. MALAYSIA: 1♁ 1♀ (UBCZ; KYU-SAL470, KYU-SAL471), Sarawak, Bako National Park, Ulu Assam Trail, 1.712– 1.713°N, 110.445– 110.448°E, 30–80 m elev., 8 March 2012, leg. W. Maddison, E.K. Piascik, A. Ang & C. Lee, WPM#12-005; 1♁ (UBCZ; KYU-SAL408), 1♀ (UBCZ; KYU-SAL472), Sarawak, Lambir Hills National Park, Inoue Trail, 4.2012– 4.2014°N, 114.0320– 114.0317°E, 210 m elev., 4 April 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-133; 2♀ (UBCZ; KYU-SAL473, 486), Same locality, Pantu Trail, 4.2021– 4.4025°N, 114.0413– 114.0411°E, 140 m elev., 31 March 2013, W. Maddison & E.K. Piascik, WPM#12-108~109; 3♀ (UBCZ; KYU-SAL474, 478), Same locality, Inoue Trail, 4.1991– 4.1995°N, 114.0367– 114.0365°E, 150 m elev., 1 April 2012, W. Maddison & E.K. Piascik, WPM#12-114~115; Sarawak, Mulu National Park, Kenyalang Trail, 4.0230– 4.0231°N, 114.8120– 114.8125°E, 55 m elev., 17 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-045; 1♁ 2♀ (UBCZ; KYU-SAL450), Same locality, Nightwalk Trail, 4.0432– 4.0440°N, 114.8154°E, 50 m elev., 24 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-088; 2♀ (UBCZ; KYU-SAL456, 465), Same locality, headquarters area, 4.042°N, 114.814°E, 50 m elev., 25–27 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-094~095; 1♀ (UBCZ; KYU-SAL459), Same locality, Clearwater Cave Trail, 4.0582– 4.0584°N, 114.8285– 114.8288°E, 60 m elev., 14 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-030; 1♀ (UBCZ; KYU-SAL463), Same locality, Botanical Trail, 4.0387– 4.0389°N, 114.8144– 114.8148°E, 50 m elev., 13 March 2012, leg. W. Maddison, E.K. Piascik & A. Ang, WPM#12-020.
Etymology. The specific epithet is in honor of Dr. Yuri M. Marusik (Magadan, Russia), who has made great contributions on the taxonomy of Salticidae.
Diagnosis. It can be distinguished from other congeners by the concave back side of embolus (Fig. 68) (vs. not concave), the small epigynal atria and kidney-shaped spermathecae (Fig. 59; vs. epigynal atria relatively large, spermathecae relatively oval in other species).
Description. Male. Habitus as shown in Fig. 47. Measurements of holotype (KYU-SAL410): carapace length 1.72; abdomen length 1.55; measurements of eyes: AME 0.38, ALE 0.24, PME 0.04, PLE 0.18; measurements of legs: I 2.94 (0.88, 0.56, 0.66, 0.52, 0.32), II 2.45 (0.79, 0.41, 0.47, 0.47, 0.31), III 2.50 (0.86, 0.35, 0.49, 0.50, 0.30), IV 2.51 (0.85, 0.34, 0.54, 0.48, 0.29); leg formula 1423. Endite with anterior lateral subtriangular extension. Color (Figs 41–43): Body dark, covered with dense khaki setae except for face, palp and tibia I, these parts conspicuously black compared to other body parts; dorsal abdomen with indistinct longitudinal light mark on axis, and three pairs of light setal bands on each side of posterior part, the posterior pair connecting to each other (Fig. 43).
Palp as in Figs 51–53, 56–57: Cymbium slightly longer than palpal bulb in length, cymbial process (CyP) present, slightly visible in ventral view of palp; tegular lobe wide and stout, distal part prolaterally pointed; short embolus sticking out of large irregular embolic disc, embolic disc hidden behind bulb, with back keel (bK) extending to distal part; embolus concave on back side (Figs 66–69); small apical extension of embolus (aE) sticking out of wide and relatively deep groove around itself (Fig. 68); retrolateral tibial apophysis (RTA) straight, digitiform distally.
Female. Habitus as shown in Fig. 48. Measurements of paratype (KYU-SAL472): carapace length 1.61; abdomen length 1.68; measurements of eyes: AME 0.38, ALE 0.22, PME 0.05, PLE 0.19; measurements of legs: I 2.25 (0.73, 0.38, 0.51, 0.34, 0.29), II 2.04 (0.69, 0.35, 0.40, 0.33, 0.27), III 2.19 (0.79, 0.40, 0.39, 0.41, 0.20), IV 2.42 (0.76, 0.33, 0.50, 0.48, 0.35); leg formula 4132. Body form and color like male, but without anterior lateral subtriangular extension and present central setal tuft on sternum (Fig. 50); abdominal pattern like male, but more distinct.
Vulva as in Figs 54–55, 58–59: Copulatory ducts short, curved outward; spermathecae kidney-shaped, with accessory glands (AG) attached at their base.
Natural history. Mainly foliage-dwelling; sometimes can be found on tree trunks.
Distribution. Malaysia (Sarawak).
description: Published as part of Yu, Kun, Hoang, Quang Duy, Maddison, Wayne P. & Zhang, Junxia, 2023, Review of Chalcovietnamicus Marusik, 1991, with description of four new species (Araneae, Salticidae, Euophryini), pp. 451-480 in Zootaxa 5336 (4) on pages 461-466, DOI: 10.11646/zootaxa.5336.4.1, http://zenodo.org/record/8282322