Sadala nigristernis Simon, 1880

Rheims, Cristina A. & Jäger, Peter, 2022, Revalidation of the genus Sadala Simon, 1880 with the description of a new genus of Neotropical huntsman spiders (Araneae, Sparassidae), Zootaxa 5135 (1), pp. 1-80 : 15-16

Sadala nigristernis Simon, 1880 comb. rest.

Figs 38–40 , 43–44 , 90

Sadala nigristernis Simon, 1880: 322 (female holotype from São Paulo de Olivença [‑3.3667, ‑68.8667], Amazonas , Brazil, MNHN 1672 ).

Sparassus nigristernis: Simon 1897: 35 .

Olios nigristernis: Simon 1903a ; 1020; Petrunkevitch 1911: 501; Jäger 2020: 81 (misplaced in Olios ).

Additional material examined. BRAZIL: Pará: 3♀, Tucuruí [‑3.8167, ‑49.6333], Usina Hidrelétrica de Tucuruí , Rio Tocantins, no date, Equipe Butantan leg. ( IBSP 6893 ) ; 1♀, same locality as previous specimen, July 1984, Equipe Butantan leg. ( IBSP 5642 ) ; 1♀, same locality as previous specimen, 1984 ( IBSP 5977 ) ; Rondônia: 3♀, Usina Hidrelétrica de Samuel [‑8.7500, ‑63.4500], December 1988, Equipe Butantan leg. ( IBSP 6616 , 6617 , 6622 ) ; Acre: 1♀, Parque Nacional da Serra do Divisor, Pedernal [‑8.0337, ‑73.5500], 13 November 1996, R. S. Vieira leg. ( IBSP 9144 ) ; 1♀, Manoel Urbano, Parque Estadual do Chandless (‑9.4081, ‑69.9292), 23–25 November 2010, W.E.F. Morato leg. (‑exUFMG 6180) ; 1♀, Senador Guiomard, Reserva Extrativista de Catuaba [‑10.0667, ‑67.6167], 2000–2002, E. Morato leg. ( IBSP 87532 ) ; Mato Grosso: 1♀, Cláudia [‑11.5000, ‑54.8833], Fazenda Iracema, 2–17 April 1997, M. Caleffo leg. ( IBSP 10226 ) .

Diagnosis. Females of S. nigristernis resemble those of S. velox ( Figs 75–77 ) by the epigyne with MS roughly trapezoid, widest medio-anteriorly ( Fig. 38 ). They are distinguished from those of the latter species by the MS two times longer than wide and margins of CO oblique ( Fig. 38 ) (MS as long as wide and margins of CO roughly longitudinal in S. velox ). Males are unknown.

Redescription. Female (holotype): Total length 19.4. Prosoma: 7.9 long, 7.3 wide. Opisthosoma: 10.8 long, 3.7 wide. Eyes: diameters: 0.58, 0.44, 0.30, 0.45; interdistances: 0.48, 0.20, 0.74, 0.70, 0.48, 0.32. Legs: I: 32.9 (9.2, 3.7, 8.7, 9.0, 2.3); II: 34.6 (10.1, 3.8, 9.1, 9.4, 2.2); III: 25.7 (8.0, 3.3, 6.4, 6.1, 1.9); IV: 28.4 (8.7, 3.0, 7.0, 7.6, 2.1). Spination follows the generic pattern. Epigyne: EF longer than wide; MAB embedded in EF; TP two times longer than wide; LL touching posteriorly ( Figs 38 , 43 ). Vulva: FW antero-mediad; GP cylindrical, slightly longer than wide, arising from ducts at second turn; SP irregularly rounded; FD antero laterad ( Figs 39–40 , 44 ).

Male: Unknown.

Variation. Females (n = 9): total length 16.0–23.7; prosoma length 7.2–8.2; femur I length 8.3–10.0.

Distribution. Known from northern and central Brazil, states of Amazonas, Acre, Rondônia, Pará and Mato Grosso ( Fig. 90 ).

Figures

FIGURES 35–40. 35–37 Sadala nanay spec. nov., female (MUSM, holotype) (35 epigyne, 36 vulva, 37 schematic course of internal duct system); 38–40 Sadala nigristernis Simon, female (MNHN 1672, holotype) (38 epigyne, 39 vulva, 40 schematic course of internal duct system). FD—fertilization duct; ft—first turn of duct system; GP—glandular projection; LL—lateral lobe; MS—median septum; SP—spermathecae; st—second turn of duct system; TP—triangular projection. Scale lines: 1 mm.

FIGURES 41–44. 41–42 Sadala nanay spec. nov., female (MUSM, holotype) (41 epigyne, 42 vulva); 43–44 Sadala nigristernis Simon, female (IBSP 87532) (43 epigyne, 44 vulva). Scale lines: 1 mm.

FIGURES 89–90. Distribution maps for Sadala spp. 89 S. tabatinga spec. nov., S. velox Simon, S. nanay spec. nov., S. punicea Simon 90 S. rufa (Keyserling), S. kaiabi spec. nov., S. keyserlingi Simon, S. nigristernis Simon, S. yuyapichis spec. nov.

FIGURES 72–77. Sadala velox Simon 72–74 Male (MZSP 33349), left palp (72 prolateral, 73 ventral, 74 retrolateral); 75–77 Female (IBSP 9361) (75 epigyne, 76 vulva, 77 schematic course of internal duct system). C—conductor; DpP—dorsal proximal projection; E—embolus; FD—fertilization duct; ft—first turn of duct system; GP—glandular projection; LL—lateral lobe; MS—median septum; TP—triangular projection; PTA—prolateral tibial projection; RTA—retrolateral tibial apophysis; SP— spermathecae; st—second turn of duct system; ST—subtegulum. Scale lines: 1 mm.