Gypogyna forceps Simon 1900
Creators: name: Ruiz, Gustavo R. S.
name: Costa, Erika L. S.
name: Bustamante, Abel A.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Gypogyna
Gypogyna forceps

description: Gypogyna forceps Simon, 1900
Figs 1–43, 51, 63
Gypogyna forceps Simon, 1900: 387 (syntypes from Paraguay, unknown date, Germain, deposited in MNHN, not examined); Simon 1901: 444, figs 500–501; Galiano 1958: 20, figs 3A–C; Galiano 1963: 360, pl. XXI, figs 1–3; Bedoya-Róqueme, Galvis & Martínez 2018: 2, figs 1–3; Pett 2019: 1, figs 2–4; World Spider Catalog 2021.
Additional material examined. COLOMBIA: Córdoba: Montería: 1 ♂ [photos given in Bedoya-Róqueme, Galvis & Martínez (2018)], 23.XI.2017, E. Bedoya-Róqueme (CZUC-OARA-074). ECUADOR: Sucumbíos: Reserva Faunística Cuyabeno (Laguna Grande): 1 ♀, 26.IV.1994, W.P. Maddison (WPM#94-030) (UBC-SEM). BRAZIL: Pará: Belém: 1 ♀, Museu Paraense Emílio Goeldi, research campus, unknown date, C.A.C. Favacho (photographed, Fig. 1); Sergipe: São Cristóvão: 1 ♂, Universidade Federal do Sergipe campus, unknown date, UFSE students (IBSP 10349); Mato Grosso do Sul: Corumbá, Passo do Lontra: 43 ♂, 93 ♀ and 5 juveniles, VI.1998 – XI.1999, J. Raizer et al. (IBSP 63, 413, 423, 425, 484, 529, 531, 564, 576–577, 587, 706, 792, 801, 859, 875, 888, 906, 908, 937, 968, 979–980, 983, 990, 1061, 1082, 1084, 1097, 1107, 1136, 1168, 1212, 1219, 1366, 1572, 1594, 1628, 1685, 1791, 1795, 1841, 1863, 2536, 2572, 2643, 2687, 2690, 2830, 3248, 3371, 3396, 3452, 3741, 4029, 4308–4309, 4313, 5351, 5353, 5509, 5511, 5520, 5527, 5560–5565, 5567–5569, 5571–5572, 5574–5575, 5577–5578, 5639, 5641, 5889, 5991, 7336, 8056, 8523, 18083, 20888, 26819, 30210, 30968, 38966, 81117–81129, 87192); Rio Pardo, 1 ♂, 22–25.V.2001, F.S. Cunha & R. Souza (IBSP 53390); Santa Rita do Pardo: 2 ♂, 02–05.VII.2001, D. Candiani & F. Lini (IBSP 53292); Anaurilândia: 5 ♀ and 1 juvenile, 05–19.III.2001, F.S. Cunha & C.R. Souza (IBSP 53335, 53364); São Paulo: Presidente Epitácio, Usina Hidrelétrica Sérgio Motta: 7 ♂ and 28 ♀, 1999–2002, Equipe IBSP (IBSP 53083, 53122, 53166, 53270, 53305, 53393, 53433); Rio Grande do Sul: Cachoeira do Sul (S30.0219°, W52.9178°): 1 ♂ (MCTP 9725) and 1 ♀ (MCTP 3554), R.G. Buss, 14.XI.1992. Palmares do Sul, Buraco Quente: 5 ♂ and 14 ♀, 11.XI.2003, Equipe Probio (MCN 36806). PARAGUAY: Ñeembucu, Estancia Santa Ana (26.8434°S, 58.0360°W): 1 ♂ [photos given in Pett (2019)], 14.IX.2019, M. Richardot (CCPLT-Ar 240). ARGENTINA: Misiones: Oberá: 1 ♂, G. Rubio (photos sent by G.D. Rubio).
Diagnosis. Among the three species, G. forceps is more similar to G. amazonica sp. nov. In these two, male chelicerae extend almost parallelly forward (they are more divergent in G. mexicana sp. nov.), and the distal pair of promarginal teeth (DPT) is located near the articulation of the fang (Fig. 51) (DPT is more basal in G. mexicana; Fig. 52). Also, the abdominal color pattern is simpler in G. forceps and G. amazonica, with fewer details (Figs 1–3), while there are more dorsal pairs of dark spots in G. mexicana (Figs 53–56). However, both sexes of G. forceps can be immediately recognized by the unusual abdominal color pattern, with a pair of oblique long dark lines anteriorly and a pair of strongly stained dark spots near the spinnerets (Figs 1–9) (absent in G. amazonica; multiple stain pairs in G. mexicana). The male palp is very similar among the three species, but in G. forceps it is much wider at the middle portion of the cymbium, while the cymbial borders are more parallel in the other two species. Copulatory openings in the epigyne of G. forceps are more conspicuous (Fig. 43), copulatory ducts are less compact, and the spermathecae are more rounded (Fig. 39), in comparison to those of G. mexicana (Figs 44, 50) (the female of G. amazonica is unknown).
Description. Male (MCTP 9725). Total length: 4.22. Carapace orange, 1.97 long, 1.37 wide, 0.84 high; intestinal diverticula can be seen within cephalic area through translucent cuticle. Ocular quadrangle 1.03 long. Anterior eye row 1.13 wide and posterior 1.10 wide. Labium, endites and sternum clear. Chelicera orange. Palp as described for the genus (Figs 34–37). Legs 1423, yellow. Length: I 3.97 (1.10 + 1.62 + 1.25), II 3.00 (0.91 + 1.13 + 0.96), III 2.94 (0.88 + 1.04 + 1.02), IV 3.49 (1.07 + 1.28 + 1.14). Abdomen with a pair of oblique long dark lines anteriorly and a pair of strongly stained dark spots near the spinnerets (Figs 1–9). Spinnerets brown.
Description. Female (MCTP 3554). Total length: 4.38. Carapace as in male, 1.95 long, 1.23 wide, 0.75 high. Ocular quadrangle 1.05 long. Anterior eye row 1.14 wide and posterior 1.20 wide. Labium, endites, palps and sternum clear. Chelicera orange. Legs 4132, yellow. Length: I 3.26 (0.98 + 1.30 + 0.98), II 2.57 (0.81 + 0.94 + 0.82), III 2.73 (0.84 + 0.96 + 0.93), IV 3.44 (1.05 + 1.28 + 1.11). Abdomen as in male. Spinnerets clear.
Variation. Additional variation in spines: most specimens examined have only the d 0-1-1 pattern of spines on all femora, but a few specimens have d 1-1-1, as in the holotype of G. amazonica sp. nov.
Distribution. Known from tropical localities in northern South America (Colombia, Ecuador, Brazil: Pará), coastal northeastern Brazil (Brazil: Sergipe), midwestern/southwestern Brazil (Mato Grosso do Sul, São Paulo), and temperate localities in northeastern Argentina (Misiones), Southern Paraguay (Ñeembucu) and southern Brazil (Rio Grande do Sul) (Fig. 63).
Note. The posterior pair of dark brown spots on the dorsum of the abdomen (Figs 4–9) is obvious in all specimens examined and in the syntypes of G. forceps [“ Abdomen ... in parte apicali maculis nigris binis obliquis supra ornatum” (Simon 1900: 387)].
description: Published as part of Ruiz, Gustavo R. S., Costa, Erika L. S. & Bustamante, Abel A., 2021, Revision of Gypogyna Simon, 1900 (Araneae: Salticidae), pp. 241-259 in Zootaxa 5057 (2) on pages 244-248, DOI: 10.11646/zootaxa.5057.2.5, http://zenodo.org/record/5588132