Chalcovietnamicus weihangi Yu & Hoang & 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 weihangi

description: Chalcovietnamicus weihangi Yu & Zhang, sp. nov. (NJüffiḋff)
Figs 2–3, 88–104, 144
Type material. Holotype: ♁ (MHBU-ARA-00023662), CHINA: Guangxi Prov., Guilin City, Xing’an County (ẊṘƌ), Maoershan National Natural Reserve (OiẌƜDZḞƦñãffiŻ), Lijiangyuan canyon (NJflAEXựê), 25.0142°N, 110.0083°E, 476 m elev., 3 May 2021, leg. Y. Mu & W. Wang, HBUARA#2021-37. Paratype: 1♀ (MHBU-ARA-00023663), same data as holotype.
Other material examined. CHINA: 1♁ 11♀ (MHBU-ARA-00023664~00023667), Guangxi Province, Hezhou City, Fuchuan Yao Autonomous County (âfflẈḦƦàƌ), Chengbei Town (Ẅẍā), Xinzhai Village (ĔẠn'), 24.0125°N, 111.0036°E, 312 m elev., 8 May 2021, leg. Y. Mu & W. Wang, HBUARA#2021-44; 1♀ (MHBU-ARA-00023668), Same locality, 7 May 2021, leg. Y. Mu & W. Wang, HBUARA#2021-42; 2♀ (MHBUARA-00023669~00023670), Guangxi Province, Hezhou City, Pinggui District (ṮIJŻ), Guposhan Scenic Area (ỄḄƜKṞŻ), Yilezhai (‒Ģ⁂), 24.0103°N, 111.0086°E, 830 m elev., 11 May 2021, leg. Y. Mu & W. Wang, HBUARA#2021-49.
Etymology. The specific epithet is in honor of Mr. Weihang Wang (MHBU), who contributed greatly to this work by collecting specimens and taking photographs of living spiders.
Diagnosis. It can be distinguished from all other congeners by the embolus that is bent near 90° in ventral view (Figs 97, 101), and the relatively low atria along with an obviously raised median septum (Fig. 99).
Description. Male. Habitus as shown in Figs 92–93. Measurements of holotype (MHBU-ARA-00023662): carapace length 1.82; abdomen length 1.55; measurements of eyes: AME 0.37, ALE 0.22, PME 0.06, PLE 0.19; measurements of legs: I 3.35 (0.99, 0.69, 0.72, 0.57, 0.38), II 2.74 (0.92, 0.48, 0.62, 0.38, 0.34), III 2.87 (0.97, 0.44, 0.54, 0.56, 0.36), IV 2.92 (0.89, 0.45, 0.62, 0.62, 0.34); leg formula 1423. Endite with anterior lateral subtriangular extension. Color (Figs 88–89): Body dark, covered with dark-khaki setae except for face, palp and tibia I, these parts slightly darker than other body parts; abdominal pattern indistinct.
Palp as in Figs 97–98, 101–102: Cymbium slightly longer than palpal bulb in length, cymbial process (CyP) present, slightly visible in ventral view of palp; tegular lobe stout, sticking out of tegulum, not curved; embolus curved near 90° in ventral view, sticking out of large and oval embolic disc, embolic disc hidden behind bulb; retrolateral tibial apophysis (RTA) wide in retrolateral view, platelike, domed in distal part.
Female. Habitus as shown in Fig. 94. Measurements of paratype (MHBU-ARA-00023665): carapace length 2.22; abdomen length 2.37; measurements of eyes: AME 0.41, ALE 0.25, PME 0.07, PLE 0.24; measurements of legs: I 3.44 (1.09, 0.65, 0.76, 0.53, 0.41), II 3.11 (1.03, 0.58, 0.61, 0.52, 0.37), III 3.26 (1.15, 0.59, 0.55, 0.59, 0.38), IV 3.63 (1.24, 0.58, 0.74, 0.72, 0.35); leg formula 4132. Body form like male, but without anterior lateral subtriangular extension and present central setal tuft on sternum (Fig. 96); dorsal abdominal pattern clearer than male, with discontinuous and hollow longitudinal light mark on axis, and three pairs of transverse light setal bands on each side of posterior part (Fig. 30).
Vulva as in Figs 99–100, 103–104: Copulatory ducts curved outward; spermathecae subspherical, with accessory glands (AG) attached at their base.
Variation. In the male from Hezhou, Guangxi (MHBU-ARA-00023664), the tegular lobe (TL) is relatively short, palpal patella is obviously elongated, and the retrolateral patellar crack (PC) is present, whereas in the holotype male, the tegular lobe (TL) is long, palpal patella is short, and the patellar crack is fused (Fig. 98).
Natural history. All specimens were collected in cracks of handrails. One female was observed preying on ant (possibly Crematogaster sp.; Fig. 3).
Distribution. China (Guangxi).
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 469-470, DOI: 10.11646/zootaxa.5336.4.1, http://zenodo.org/record/8282322