Chalcovietnamicus weihangi Yu & Zhang, 2023

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), Zootaxa 5336 (4), pp. 451-480 : 469-470

publication ID	https://doi.org/ 10.11646/zootaxa.5336.4.1
publication LSID	lsid:zoobank.org:pub:9437A968-62B7-467C-97B6-BD6DD0164EF7
DOI	https://doi.org/10.5281/zenodo.8284476
persistent identifier	https://treatment.plazi.org/id/03EE7360-FFDB-FFC3-4F95-FD4B4C2DEF75
treatment provided by	Plazi
scientific name	Chalcovietnamicus weihangi Yu & Zhang
status	sp. nov.

Treatment

Chalcovietnamicus weihangi Yu & Zhang , sp. nov. (NJüffiḋff)

Figs 2–3 View FIGURES 1–3 , 88–104 View FIGURES 88–91 View FIGURES 92–100 View FIGURES 101–104 , 144 View FIGURES 141–146

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 GoogleMaps . Paratype: 1♀ (MHBU-ARA-00023663), same data as holotype GoogleMaps .

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 GoogleMaps ; 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 GoogleMaps .

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 View FIGURES 92–100 , 101 View FIGURES 101–104 ), and the relatively low atria along with an obviously raised median septum ( Fig. 99 View FIGURES 92–100 ).

Description. Male. Habitus as shown in Figs 92–93 View FIGURES 92–100 . 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 View FIGURES 88–91 ): 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 View FIGURES 92–100 , 101–102 View FIGURES 101–104 : 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 View FIGURES 92–100 . 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 View FIGURES 92–100 ); 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 View FIGURES 29–36 ).

Vulva as in Figs 99–100 View FIGURES 92–100 , 103–104 View FIGURES 101–104 : 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 View FIGURES 92–100 ) .

Natural history. All specimens were collected in cracks of handrails. One female was observed preying on ant (possibly Crematogaster sp. ; Fig. 3 View FIGURES 1–3 ).

Distribution. China (Guangxi).