Evarcha flavocincta (C. L. Koch, 1846) Figs 1–6, 25 Maevia flavocincta C. L. Koch, 1846: 74, fig. 1330 (D ♀). Evarcha flavocincta Żabka, 1985: 224, figs 187–196 (♁ ♀); Prószyński & Deeleman-Reinhold, 2010: 165, figs 71–72 (♀); Roy et al., 2014: 380, figs 1–6 (♀); Dhali, Saha & Raychaudhuri, 2017: 29, figs 38–42, pl. 17 (♀); Prasad, Kumar & Tyagi, 2022: 1021, figs A–D (♀). Plexippus optabilis Fox, 1937: 16, fig, 7 (D ♀); holotype ♀ in the United States National Natural History Museum, Washington, D.C., examined drawings of the holotype by J. Prószyński (1987); syn. nov. Marpissa mizoramensis B.K. Biswas & K. Biswas, 2007: 458, figs 1–3 (D ♀); holotype ♀ in NZC-ZSI, Kolkata, examined; syn. nov. For a complete list of taxonomic references refer the WSC (2022). Type material. Marpissa mizoramensis Biswas & Biswas, 2007: Holotype ♀ (NZC-ZSI 5480 /18) from INDIA, Mizoram, Lunglei (22.8629°N, 92.7750°E), 962 m a.s.l., 25.03.1994, leg. Bijan Biswas. Justification of synonymy. Marpissa mizoramensis Biswas & Biswas, 2007 was described from Lunglei, Mizoram based on a female holotype (Biswas & Biswas 2007). Detailed examination of the holotype revealed that the general body colour pattern and the sclerotized epigyne with large, comma shaped grooves separated by a broad median septum; posterior margin with a pair of lateral pockets; complex and coiled internal duct system with membraneous ducts running initially from the copulatory openings and gradually becoming sclerotized; anteriorly placed spermathecae are identical with that of Evarcha flavocincta (cf. Figs 1–4 with figs 187–192 in Żabka (1985)). The name Marpissa mizoramensis is therefore regarded as a junior synonym of E. flavocincta. Evarcha optabilis (Fox, 1937) was described based on a female holotype collected from Suifu, Szechwan Province (now Sichuan Province), China (Fox 1937). The illustrations of the genitalia of the holotype (Fox 1937; Prószyński 1987) depict the epigyne with comma shaped grooves separated by a broad median septum; posterior margin with a pair of lateral pockets; internal duct system apparently coiling and positioned anteriorly are identical with that of Evarcha flavocincta (cf. fig. 7 in Fox (1937) and illustration in Prószyński (1987: 26) with figs 188 & 191 in Żcabka (1985) and Fig. 2 herein). It is thus safe to consider E. optabilis as a junior synonym of E. flavocincta. Distribution. India, China to Indonesia (WSC 2022). India: Mizoram (Biswas & Biswas 2004: sub Marpissa mizoramensis), Odisha (Prasad et al. 2022), West Bengal (Roy et al. 2014; Dhali, Saha & Raychaudhuri 2017; Tyagi et al. 2019) (Fig. 25).

Published as part of Caleb, John T. D., 2023, Deciphering mysteries: On the identity of five enigmatic jumping spiders from Northeast India, China and Philippines (Araneae, Salticidae), pp. 391-400 in Zootaxa 5230 (3) on page 392, DOI: 10.11646/zootaxa.5230.3.8, http://zenodo.org/record/7561606