Meri tambor, 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 : 63

Meri tambor spec. nov.

Figs 253–256 , 260–262 , 318

Type material. Holotype: BRAZIL: Amazonas : ♂, Parque Nacional do Jaú (‑1.8671, ‑61.5875), 1–8 August 2001, I. Ghizoni Jr. leg. ( INPA 3522 ) . Paratype: BRAZIL: Amazonas: 1♂, from the same vial as holotype ( INPA 3522 ) .

Etymology. The specific name refers to the Tambor community, original inhabitants of the area that now encompasses the Jaú National Park; noun in apposition.

Diagnosis. Males of M. tambor spec. nov. resemble those of M. vanini spec. nov. ( Figs 285–288 ) by the palp with RTA distally blunt and embolus bulging prolaterally at base, with long, distad, laminar subdistal projection and barely conspicuous membranous area (see Fig. 100 ). They are distinguished from the latter species by the RTA longer than wide ( Fig. 255 ) and embolus bulging retrolaterally at base ( Fig. 256 ) (RTA wider than long and embolus without retrolateral bulge in M. vanini spec. nov.). Females are unknown.

Description. Male (holotype): Total length 11.6. Prosoma 5.0 long, 4.5 wide. Opisthosoma 6.1 long, 3.4 wide. Eyes: diameters: 0.40, 0.32, 0.24, 0.31; interdistances: 0.30, 0.11, 0.45, 0.42, 0.30, 0.21. Legs: I: 31.5 (8.2, 2.7, 9.0, 9.3, 2.3); II: 33.6 (9.1, 2.9, 9.6, 9.6, 2.4); III: 22.0 (6.5, 2.0, 6.2, 5.8, 1.5); IV: 25.8 (7.2, 2.2, 7.0, 7.4, 2.0). Spination following the generic pattern. Palp: PTA subtriangular, distally rounded, roughly 1.5 times wider than long; RTA roughly 1.5 times longer than wide; cymbium with long retroproximal projection; subtegulum visible between 9–11 o’clock in ventral view; tegulum with small protrusion close to conductor base; conductor widest at base, distally fanned; embolus with subdistal projection roughly 2 times longer than wide (in ventral view) ( Figs 238–241 , 245–247 ).

Female: unknown.

Variation. Males (n = 2): total length 10.1–11.6; prosoma length 5.0–5.1. femur I length 7.8–8.2.

Distribution. Only known from the type locality ( Fig. 318 ).

Figures

FIGURES 253–259. 253–256 Meri tambor spec. nov., male (INPA 3522), left palp (253 prolateral, 254 ventral, 255 retrolateral, 256 detail of embolus); 257–259 Meri tapirapeco spec. nov., female (INPA) (257 epigyne, 258 vulva, 259 schematic course of internal duct system). C—conductor; E—embolus; EP— epigynal pocket; FD—fertilization duct; ft—first turn of duct system; GP—glandular projection; LL—lateral lobe; MS—median septum; PTA—prolateral tibial apophysis; RpP—retro proximal projection; RTA—retrolateral tibial projection; SdP—subdistal projection; SP—spermathecae; tp—tegular protrusion. Scale lines: 1 mm.

FIGURES 260–264. 260–262 Meri tambor spec. nov., male (INPA 3522, holotype), left palp (260 prolateral, 261 ventral, 262 retrolateral); 263–264 Meri tapirapeco spec. nov., female (INPA, holotype) (263 epigyne, 264 vulva). Scale lines: 1 mm.

FIGURES 315–318. Distribution maps for species of Meri gen. nov. 315 (M. martinique spec. nov., M. sanctivincenti (Simon) comb. nov., M. trinitatis (Strand) comb. nov., M. carabobo spec. nov., M. kaieteur spec. nov.); 316 (M. jaraua spec. nov., M. arraijan spec. nov., M. formosus (Banks) comb. nov., M. guri spec. nov., M. tumatumari spec. nov.); 317 (M. zeteki spec. nov., M. manaos spec. nov., M. yaciba spec. nov., M. tapirapeco spec. nov., M. abuna spec. nov.); 318 (M. mathani (Simon) comb. nov., M. pictitarsis (Simon) comb. nov., M. conduri spec. nov., M. paiaia spec. nov., M. tambor spec. nov.);

FIGURES 285–291. Meri vanini spec. nov. 285–288 male (MPEG 30859, paratype), left palp (285 prolateral, 286 ventral, 287 retrolateral, 288 detail of embolus, ventral); 289–291 female (MZSP 37241, paratype) (289 epigyne, 290 vulva, 291 schematic course of internal duct system). C—conductor; E—embolus; EP—epigynal pocket; FD—fertilization duct; ft—first turn of duct system; GP—glandular projection; LL—lateral lobe; MS—median septum; PTA—prolateral tibial apophysis; RpP—retro proximal projection; RTA—retrolateral tibial projection; SdP—subdistal projection; SP—spermathecae; ST—subtegulum; tp—tegular protrusion. Scale lines: 1 mm.

FIGURES 99–102. 99 Meri vanini spec. nov. 99, 101 IBSP 227036, male; 102 IBSP 5352, female; 100 Meri conduri spec. nov. MPEG 30809, male. 99 epiandrium, epiandrous spigots (arrows point to clusters of spigots); 100 right palp, embolus, detail of membranous region; 101 right palp, embolus, detail of membranous region; 102 left palp, sensory setae. mr—membranous region.

FIGURES 238–244. 238–241 Meri quinari spec. nov., male (UFMG 10165), left palp (238 prolateral, 239 ventral, 240 retrolateral, 241 detail of embolus); 242–244 Meri rivai spec. nov., female (IBSP 246428) (242 epigyne, 243 vulva, 244 schematic course of internal duct system). db—dorsal branch of RTA; E—embolus; EP—epigynal pocket; ft—first turn f duct system; FD—fertilization duct; GP—glandular projection; LL—lateral lobe; MAB—muscle attachment bands; MS—median septum; PTA—prolateral tibial apophysis; RTA—retrolateral tibial apophysis; SdP—subdistal projection; SP—spermathecae. Scale lines: 1 mm.

FIGURES 245–249. 245–247 Meri quinari spec. nov., male (UFMG 10165, holotype), left palp (245 prolateral, 246 ventral, 247 retrolateral); 248–249 Meri rivai spec. nov., female (IBSP 246428, holotype) (248 epigyne, 249 vulva). Scale lines 1 mm.