Nativus mariua Casas & Rheims 2023, sp. nov.
Creators: name: Casas, Cristian M.
name: Rheims, Cristina A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Sparassidae
Nativus
Nativus mariua

description: Nativus mariua sp. nov.
Figs 50−64
Type material. Holotype: BRAZIL: Amazonas: ♂, Barcelos [1.1833, -64.9667], 29 September 2006, R. Braga Neto leg. (INPA). Paratypes: BRAZIL: Amazonas: all same locality as for holotype, 2 ♂, 14 October 2006, A.A. Nogueira leg. (INPA); 1 ♂, 16 October 2006, A.A. Nogueira leg. (INPA); 1 ♂, 17 October 2006 A.A. Nogueira leg.
(IBSP 273022); 1♂, 30 September 2006, A.A. Nogueira leg. (IBSP 273023); 1♀, 17 October 2006, A.A. Nogueira leg. (IBSP 273024); 1♀, 17 October 2006, R. Braga Neto leg. (IBSP 273025); 1♀, 3 October 2006, R. Braga Neto leg. (INPA-Df); 1♀ 13 October 2006, R. Braga Neto leg. (INPA); 2 ♀, 6 October 2006, A.A. Nogueira leg. (INPA); 1♂, 1♀, 10 October 2006, A.A. Nogueira leg. (INPA); 1 ♂, 29 September 2006, A.A. Nogueira leg. (MZSP); 1♀, 4 October 2006, A.A. Nogueira leg. (MZSP).
Additional material examined. BRAZIL: Amazonas: 1♂, São Gabriel da Cachoeira, [-0.1188, -67.0850], Pico da Neblina, Cachoeira do Tucano, 23 September 2007, N. Lo Man Hung leg. (IBSP 278829); 1♂, Barcelos [1.1833, -64.9667], Serra do Tapirapecó, 14 October 2006, A.A. Nogueira leg. (INPA); 1 ♂, 17 October 2006, R. Braga Neto leg. (INPA); 1♀, 4 October 2006, A.A. Nogueira leg. (INPA); 1 ♂, 17 October 2006, R. Braga Neto leg. (INPA); 1 ♂, 3 October 2006, A.A. Nogueira leg. (INPA); 1♂, 1♀, October 2006, R. Braga Neto leg. (INPA); 1 ♂, 6 October 2006, R. Braga Neto leg. (INPA); all same locality.
Etymology. The specific name refers to the Vila de Mariuá, built by the Manaus Indians at the right margin of the Negro River, that later became the city of Barcelos; noun in apposition.
Diagnosis. Males of N. mariua sp. nov. resemble those of N. carare sp. nov. (Figs 16−18) and N. tawu sp. nov. (Figs 106−108) by the palps with E roughly straight and tegulum lacking RdP (Fig. 60). They are distinguished from N. carare sp. nov. by the dRTA bifid, with two pointed branches and triangular protrusion close to bp (Figs 60−61) (dRTA distally truncated and tegulum lacking small triangular protrusion close to bp in N. carare sp. nov.) and from N. tawu sp. nov. by the bp keel-like, wider than long and dRTA with ventral branch straight in retrolateral view (Figs 60-61) (bp irregular-shaped, slightly longer than wide and dRTA with ventral branch hook-shaped in retrolateral view in N. tawu sp. nov.). Females resemble those of N. tawu sp. nov. (Figs 109−111) by the LL fused medially with pair of anterior COd bearing posterior CO and large, posterior MS. They are distinguished by the MS trapezoid, as long as wide and fused part of LL as long as anterior COd (Fig. 62) (MS rectangular, wider than long and fused part of LL shorter than anterior COd in the latter species).
Description. Male (holotype): Prosoma brown with dark brown margins and darker thoracic striae; cephalic region with brown longitudinal stripe extending posteriorly from behind AME; fovea dark brown; eye borders black. Chelicerae, legs and palps pale yellowish brown. Endites pale brownish yellow. Labium brown, distally pale brownish yellow. Sternum pale yellowish cream colored with brown margins. Opisthosoma gray; dorsally with pair of rounded darker gray muscle impressions; ventrally with V-shaped lines of muscle impressions. Spinnerets grayish cream colored, distally lighter (Figs 50−51). Total length 6.7. Prosoma: 3.3 long, 3.2 wide. Opisthosoma: 3.3 long, 1.9 wide. Eyes: diameters: 0.22, 0.26, 0.18, 0.30; interdistances: 0.15, 0.05, 0.32, 0.31, 0.28, 0.26. Legs (2143): I: 19.6 (5.0, 1.4, 6.6, 5.3, 2.3); II: 22.7 (5.8, 1.4, 6.5, 6.4, 2.6); III: 15.0 (4.1, 1.2, 4.0, 4.1, 1.6); IV: 18.2 (5.0, 1.1, 4.8, 5.2, 2.1). Palp: PTA resembling the top part of a thumb, longer than wide; VTA small, triangular, slightly displaced retrolaterally; vRTA slightly over 1.5 times longer than wide in retrolateral view; dRTA with ventral branch acuminate, three times longer than wide and dorsal branch spoon-shaped with subdistal triangular projection; tegulum with small triangular protrusion close to bp; DTA without projections (Figs 52−54, 59−61).
Female (paratype, INPA-Df): Prosoma brown with darker brown reticulated margins and dark brown thoracic striae; cephalic region with dark brown lines extending posteriorly from behind PLE, PME and between AME; fovea dark brown; eye borders black. Chelicerae, legs and palps pale yellowish brown. Endites pale yellow. Labium pale brown, distally pale yellow. Sternum pale yellow with slightly darker margins. Opisthosoma brownish gray; dorsally with pair of rounded brown muscle impressions; ventrally with two parallel lines of muscle impressions. Spinnerets dorsally brownish gray, ventrally cream colored (Figs 55−56). Total length 7.5. Prosoma: 3.0 long, 3.0 wide, Opisthosoma: 4.1 long, 2.5 wide. Eyes: 0.20, 0.29, 0.20, 0.31; interdistances: 0.12, 0.04, 0.22, 0.30, 0.29, 0.27. Legs (2413): I: 13.2 (3.6, 1.5, 3.6, 3.1, 1.4); II: 14.8 (4.1, 1.5, 4.1, 3.5, 1.6); III: 10.9 (3.3, 1.1, 2.7, 2.7, 1.1); IV: 13.3 (3.9, 1.1, 3.2, 3.6, 1.5). Epigyne: EF slightly wider than long; anterior COd long, oval (Figs 57, 62). Vulva: first winding of copulatory ducts posteriad and gently curving antero-laterally; encapsulated part of internal duct system roughly 2.5 times longer than wide and mostly the same width throughout; FD postero-laterad (Figs 58, 63−64).
Variation. Males (n = 10): Total length 5.9−6.9; prosoma length 2.9−3.4; femur I length 4.8−5.1. Females (n = 9); Total length 6.1−8.6; prosoma length 2.8−3.1; femur I length 3.5−3.9.
Distribution. Only known from the type locality, in northern Amazonas, Brazil (Fig. 143).
description: Published as part of Casas, Cristian M. & Rheims, Cristina A., 2023, Nativus gen. nov., a new huntsman spider genus from South America (Araneae: Sparassidae: Heteropodinae), pp. 1-43 in Zootaxa 5360 (1) on pages 17-20, DOI: 10.11646/zootaxa.5360.1.1, http://zenodo.org/record/10146274