Sadala kaiabi, Rheims & Jäger, 2022

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 : 10

Sadala kaiabi spec. nov.

Figs 13–23 , 90

Type material. Holotype: BRAZIL: Mato Grosso: ♂, Alta Floresta [‑9.8760, ‑56.0860], 8 August–20 September 2009, J.S. Oliveira leg. ( IBSP 246434 ) . Paratypes: BRAZIL: Mato Grosso: 1♀, Cotriguaçu, Fazenda São Nicolau (‑9.8333, ‑58.2333), 14 October 2010, A.J. Santos leg. ( UFMG 7834 ) ; 1♀, same locality as previous specimen, January 2018, G. Almeida leg. ( IBSP 233316 ) .

Etymology. The specific name refers to the Kaiabi indigenous people, whose former territory included the distribution areas of this species; noun in apposition.

Diagnosis. Males of S. kaiabi spec. nov. resemble those of S. punicea ( Figs 45–47 ) and S. yuyapichis spec. nov. ( Figs 83–85 ) by the palp with embolus arising from tegulum at 4 o’clock position ( Fig. 14 ). They are distinguished from both species by the RTA tapering and pointed ( Fig. 15 ) and conductor tip barely surpassing the anterior margin of the alveolus ( Fig. 14 ) (RTA roughly the same width throughout, not pointed and conductor tip surpassing the anterior margin of the alveolus by at least half its length in S. punicea and S. yuyapichis spec. nov.). Females resemble those of S. keyserlingi ( Figs 27–29 ) by the epigyne with MS triangular, wider than long, widest anteriorly ( Figs 16 ). They are distinguished from the those of the latter species by the vulva with FW slender, slightly wider than the ducts between first and second turns (FW dilated, four times wider than ducts between first and second turns in S. keyserlingi ) ( Fig. 17 ).

Description. Male (holotype): Total length 10.3. Prosoma: 5.0 long, 5.1 wide. Opisthosoma: 5.0. Long, 3.0 wide. Eyes: diameters: 0.40, 0.34, 0.25, 0.30; interdistances: 0.35, 0.22, 0.55, 0.55, 0.37, 0.25. Legs: I: 29.7 (8.0, 3.0, 8.1, 8.5, 2.1); II: 31.6 (8.5, 3.1, 8.7, 9.0, 2.3); III: 21.8 (6.5, 2.5, 5.5, 5.7, 1.6); IV: 24.3 (7.1, 2.4, 6.2, 6.7, 1.9). Spination follows the generic pattern, except tibia II: d1-0-1 and patella III: p0. Palp: RTA two times longer than wide, disto-ventrad in retrolateral view; PTA triangular, as wide as long; subtegulum not visible in ventral view; tegulum rounded; conductor 1.5 times longer than wide; roughly the same with throughout ( Figs 13–15 , 19–21 ).

Female (IBSP 233316, paratype): Total length 17.8. Prosoma 6.8 long, 6.3 wide. Opisthosoma 10.8 long, 7.0 wide. Eyes: diameters: 0.55, 0.46, 0.34, 0.42; interdistances: 0.43, 0.25, 0.70, 0.70, 0.40, 0.28. Legs: I: 29.0 (8.2, 3.1, 7.6, 8.0, 2.1); II: 30.8 (8.8, 3.4, 8.1, 8.4, 2.1); III: 22.6 (6.8, 2.7, 5.8, 5.5, 1.8); IV: 25.1 (7.4, 2.7, 6.3, 6.7, 2.0). Spination follows the generic pattern. Epigyne: EF wider than long; MAB embedded in EF ( Fig. 22 ); LL touching each other posteriorly; TP roughly two times wider than long ( Figs 16 , 22 ). Vulva: internal ducts with FW posteromediad; GP short, rounded, emerging from ducts at second turn; SP spherical; FD laterad ( Figs 17–18 , 23 ).

Variation. Females (n = 2): total length 15.4–17.8; prosoma length 6.8–7.2; femur I length 8.2–8.6.

Distribution. Known from northern state of Mato Grosso, Brazil ( Fig. 90 ).

Figures

FIGURES 13–18. Sadala kaiabi spec. nov. 13–15 Male (IBSP 246434, holotype), left palp (13 prolateral, 14 ventral, 15 retrolateral); 16–18 Female (IBSP 233316, paratype) (16 epigyne, 17 vulva, 18 schematic course of internal ducts system). C—conductor; CO—copulatory opening; 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.

FIGURES 19–23. Sadala kaiabi spec. nov. 19–21 Male (IBSP 246434, holotype), left palp (19 prolateral, 20 ventral, 21 retrolateral); 22–23 Female (IBSP 233316, paratype) (22 epigyne, 23 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 45–50. Sadala punicea Simon 45–47 Male (IBSP 9361), left palp (45 prolateral, 46 ventral, 47 retrolateral); 28–50. Female (IBSP 7362) (48 epigyne, 49 vulva, 50 schematic course of internal duct system). C—conductor; E—embolus; FD—fertilization duct; ft—first turn of duct system; GP—glandular projection; LL—lateral lobe; MAB—muscle attachment bands; MS—median septum; PTA—prolateral tibial projection; RTA—retrolateral tibial apophysis; SP—spermathecae; st—second turn of duct system; ST—subtegulum; TP—triangular projection. Scale lines: 1 mm.

FIGURES 83–85. Sadala yuyapichis spec. nov., male (MUSM, holotype), left palp (83 prolateral, 84 ventral 85 retrolateral). Scale lines: 1 mm. C—conductor; E–embolus; PTA—prolateral tibial apophysis; RTA—retrolateral tibial apophysis; ST—subtegulum. Scale lines: 1 mm.

FIGURES 24–29. Sadala keyserlingi Simon 24–26 Male (INPA 4563), left palp (24 prolateral, 25 ventral, 26 retrolateral); 27–29 Female (MNHN 2459, syntype) (27 epigyne, 28 vulva, 29 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.