Chalcovietnamicus vietnamensis (Żabka, 1985), Wang & Li, 2022

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 : 475-479

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.8282573
persistent identifier	https://treatment.plazi.org/id/03EE7360-FFD1-FFCC-4F95-FF6E4B57EB98
treatment provided by	Plazi
scientific name	Chalcovietnamicus vietnamensis (Żabka, 1985)
status

Treatment

Chalcovietnamicus vietnamensis (Żabka, 1985) View in CoL (ḋDzffiḋff)

Figs 118–140 View FIGURES 118–123 View FIGURES 124–129 View FIGURES 130–140 , 145–146 View FIGURES 141–146

Chalcoscirtus vietnamensis Żabka, 1985: 209 View in CoL , figs 71–75.

Chalcoscirtus (Chalcovietnamicus) vietnamensis Marusik, 1991: 26 View in CoL .

Chalcovietnamicus vietnamensis Logunov, 2020: 524 View in CoL .

Type material. Holotype: ♁ ( MNHN 22980 View Materials ), VIETNAM: Ha Noi (examined by Dmitri Logunov, who shared his illustrations).

Other material examined. VIETNAM: 1♁ ( TNU), Bac Giang Province, Son Dong District, Mt. Tay Yen Tu , 21.1810°N, 106.7228°E, 352 m elev., 7 July 2022, leg. Quang D. Hoang GoogleMaps ; 3♁ 4♀ ( TNU), Dak Lak Province, Krong Bong District, Chu Yang Sin National Park , 12.4336°N, 108.2579°E, 450 m elev., 22 Feb. 2022, leg. Quang D. Hoang. GoogleMaps SINGAPORE: 1♁ 2♀ ( UBCZ; KYU-SAL525 ), Sugei Buloh Wetland Reserve, near Visitor Centre , 1.440°N, 103.734°E, 19 June 2019, leg. W.P. Maddison, K. Marathe & N. Morehouse GoogleMaps , WPM#19-064.

Diagnosis. Males can be distinguished from C. lii by the presence of a distal retro-ventral keel (dK) on the embolus ( Fig. 133 View FIGURES 130–140 ; vs. absent in C. lii ) and the dorsal extension on the distal part of retrolateral tibial apophysis (RTA), which is visible in retrolateral view ( Figs 137–140 View FIGURES 130–140 ); females can be distinguished by the extremely short copulatory ducts and the small accessory glands hidden at the back of the base of the fertilization ducts, invisible in the ventral view of the rounded spermathecae ( Fig. 136 View FIGURES 130–140 ); the golden setal bands are absent on the lateral sides of male carapace ( Fig. 124 View FIGURES 124–129 ).

Description. Male. Habitus as shown in Figs 124, 126 View FIGURES 124–129 . Measurements of the one from Dak Lak, Vietnam: carapace length 1.42; abdomen length 1.54; measurements of eyes: AME 0.35, ALE 0.24, PME 0.03, PLE 0.18; measurements of legs: I 2.28 (0.80, 0.43, 0.48, 0.36, 0.21), II 2.12 (0.72, 0.40, 0.43, 0.37, 0.20), III 2.19 (0.77, 0.35, 0.39, 0.46, 0.22), IV 2.58 (0.85, 0.41, 0.53, 0.54, 0.25); leg formula 4132. Endite with anterior lateral subtriangular extension ( Fig. 129 View FIGURES 124–129 ). Color ( Figs 118–120 View FIGURES 118–123 ): body black except for metatarsus and tarsus dark reddish and patellae to tarsi II–IV gray-pink; tibiae II–IV with dark annuli distally; golden setal bands present on axis and posterior lateral edge of abdomen, golden setal band of abdominal axis hollow.

Palp as in Figs 130–132 View FIGURES 130–140 : Cymbium slightly longer than palpal bulb in length, cymbial process (CyP) laminalike, covered by tegulum and invisible ventral view; tegular lobe stout, subconical; embolus rather short, sticking out of large and oval embolic disc which hidden behind bulb; with large flag-like embolic apophysis on back side; with retro-ventral keel on distal half of embolus; retrolateral tibial apophysis (RTA) slightly curved in its ventral edge.

Female. Habitus as shown in Figs 125, 127 View FIGURES 124–129 . Measurements of one from Dak Lak, Vietnam: carapace length 1.54; abdomen length 1.64; measurements of eyes: AME 0.37, ALE 0.23, PME 0.03, PLE 0.17; measurements of legs: I 2.34 (0.81, 0.43, 0.50, 0.37, 0.23), II 2.20 (0.74, 0.43, 0.42, 0.38, 0.23), III 2.29 (0.80, 0.36, 0.40, 0.49, 0.24), IV 2.64 (0.86, 0.41, 0.55, 0.56, 0.26); leg formula 4132. Body form and color like male, but without anterior lateral subtriangular extension and with central setal tuft on sternum, setae on the tuft slightly clavate ( Fig. 128 View FIGURES 124–129 ); golden setal bands present on dorsal axis and lateral sides of both carapace and abdomen ( Fig. 125 View FIGURES 124–129 ).

Vulva as in Figs 129 View FIGURES 124–129 , 138 View FIGURES 130–140 , 145 View FIGURES 141–146 : Copulatory ducts rather short; spermathecae subspherical, accessory glands covered by base of fertilization ducts, invisible in ventral view.

Variation. In the retrolateral view, the dorsal edge of RTA is bent in the male from Bac Giang, Vietnam ( Fig. 138 View FIGURES 130–140 ), whereas straight in other males ( Figs 137, 139–140 View FIGURES 130–140 ).

Natural history. All specimens from Vietnam were found on tree trunks, hiding in small silk cocoons built in crevices of the bark. All specimens from Singapore were found in large grass tussocks in an open habitat near mangroves.

Distribution. Singapore, Vietnam (Bac Giang, Dak Lak, Ha Noi).

Remarks. By comparing with the illustrations of the male palp of the holotype shared with us by Dr. Dmitri V. Logunov, we confirmed that the male specimen from Singapore used in this study is indeed C. vietnamensis .