Sparianthis juruti Rheims 2020, sp. nov.
Creators: name: Rheims, Cristina A.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Sparassidae
Sparianthis
Sparianthis juruti

description: Sparianthis juruti sp. nov.
Figs 2–7, 9, 93–108, 143
Type material. Holotype: ³ from Brazil, Pará, Juruti, Platô Capiranga, Linha 168E (-2.4728, -56.2082), 11 August 2008, L. T. Miglio leg. (MPEG 30650). Paratypes: 1♀, same locality as holotype, 17 November 2007, N.F. Lo Man Hung leg. (MPEG 30736); 1♀, same locality as holotype, 12 August 2006, N.F. Lo Man Hung leg. (MPEG 8563); 1♀, Brazil, Pará, Juruti, Sítio Barroso (-2.4616, -56.0032), 16–18 June 2007, D.F. Candiani & N.F. Lo Man Hung leg. (MPEG 30737); 1³, same locality as previous specimen, (-2.4643, -56.0024), 14 August 2008, L. T. Miglio leg. (MPEG 30648); 1³, Brazil, Pará, Juruti, Sítio 3 irmãos (-2.4626, -56.0142), 12 August 2008, L. T. Miglio leg. (IBSP 258331); 1♀, same locality as previous specimen, 12 August 2008, L. T. Miglio leg. (IBSP 258332); 1♀, Bra-zil, Pará, Juruti, Beneficiamento, ponto 1 (-2.5076, -56.1776), 10 August 2010, N.C. Bastos leg. (MPEG 30819); 1³, Brazil, Pará, Juruti, Beneficiamento, ponto 2 (-2.5076, -56.1776), 8–13 May 2010, B. V. B. Rodrigues et al.leg. (MPEG 30825); 1³, Brazil, Pará, Juruti, Acampamento Mutum (-1.6124, -56.1942), 6 August 2008, N.C. Bastos leg. (MPEG 30647).
Additional material examined. BRAZIL: Pará: 1³, Juruti, Sítio Barroso (-2.4616, -56.0032), 16 November 2007, D.F. Candiani & N.F. Lo Man Hung leg. (MPEG 30679); 1♀, same locality as previous specimen, 11 February 2007, J.A.P. Barreiros leg. (MPEG 30731); 1♀, same locality as previous specimen, 11 February 2007, N.F. Lo Man Hung leg. (MPEG 30732); 2³, 2 juv., same locality as previous specimen, 10 August 2006, D.F. Candiani & N.F. Lo Man Hung leg. (MPEG 8562); 1³, Juruti, Sítio 3 Irmãos (-2.4626, -56.0142), 12 August 2008, L. T. Miglio leg. (MPEG 30642); 2♀, same locality as previous specimen, 12 August 2008, N.F. Lo Man Hung leg. (MPEG 30656, 30658); 1♀, 1 juv., Juruti, Sítio Barroso (-2.4643, -56.0024), 13 August 2008, L. T. Miglio leg. (MPEG 30645); 2³, same locality as previous specimen, 13 August 2008, L. T. Miglio leg. (MPEG 30649, 30652); 1³, same locality as previous specimen, 14 August 2008, L. T. Miglio leg. (MPEG 30654); 1³, same locality as previous specimen, 16 November 2007, C.M. Souza leg. (MPEG 30678); 1♀ Juruti, Beneficiamento, ponto 1 (-2.5076, -56.1776), 20 February 2011, V. B. Rodrigues et al. leg. (MPEG 30815); 1♀, Juruti, Igarapé Mutum (-1.6124, -56.1942), 9 Sep-tember 2002, A.B. Bonaldo leg. (MPEG 30839); 1♀, Juruti, Platô Capiranga, Linha 168E (-2.5071, -56.1847), 21 May 2009, N.C. Bastos leg. (MPEG 30714); 1³, 1♀, same locality as previous specimen, 10 August 2008, N.F. Lo Man Hung leg. (MPEG 30643, 30646); 1♀, same locality as previous specimen, 9 August 2008, N.C. Bastos leg. (MPEG 30651); 1♀, same locality as previous specimen, 10 August 2008, L. T. Miglio leg. (MPEG 30655); 1³, same locality as previous specimen, 18 November 2007, E.S. Santos & C.M. Souza leg. (MPEG 30680); 1³, same locality as previous specimen, 9 February 2007, J.A.P. Barreiros leg. (MPEG 30686); 1♀, same locality as previous specimen, 21 May 2009, N.F. Lo Man Hung leg. (MPEG 30711); 1♀, same locality as previous specimen, 18 November 2007, C.M. Souza leg. (MPEG 30734); 1♀, same locality as previous specimen, 17 November 2007, D.F. Candiani leg. (MPEG 30735); 1♀, Juruti, Ramal Pacoval, km 2 (-2.4728, -56.2082), 21 November 2007, N.F. Lo Man Hung leg. (MPEG 30733).
Etymology. The specific name refers to the collection locality of the holotype; noun in apposition.
Diagnosis. Males of S. juruti sp. nov. resemble those of S. picta by the palpal tibia with strong medial-retrolateral spine (Figs 104, 124). They are distinguished from the latter species by the spine two times longer than wide (at least three times longer than wide in S. picta) (Fig. 104). They are further distinguished from all other species of the genus by TBE reduced and embolus with sub-distal pointed projection (Fig. 105). Females resemble those of S. humaita sp. nov. by the epigyne with anterior atrium grooved (Figs 83, 106). They are distinguished from the latter species by atrium rounded anteriorly (trapezoid in S. humaita sp. nov.) (Fig. 106), internal ducts slender, half spermathecae width, and first turn posteriad (internal ducts as wide as spermathecae width and first turn mediad S. humaita sp. nov.) (Figs 107–108).
Description. Male (holotype): Prosoma dark brown suffused with darker brown marbled pattern laterally; fovea dark brown; eye borders black. Chelicerae dark brown. Legs and pedipalps pale brown. Labium and endites yellowish brown, distally lighter. Sternum pale yellowish brown with darker margins. Opisthosoma dark brownish gray; dorsally with dense brown pattern of elongate marks laterally and around cardiac mark and 5–6 median chevrons down posterior half; ventrally with dense pattern of elongated marks laterally and irregular rounded marks medially; muscle sigilla inconspicuous (Figs 93–94). Total length 6.5. Prosoma: 3.3 long, 2.8 wide. Opisthosoma: 3.1 long, 1.8 wide. Eyes: diameters: 0.24, 0.18, 0.15, 0.19; interdistances: 0.12, 0.06, 0.27, 0.18, 0.15, 0.07. Legs (1/243): I: 10.8 (3.2, 1.5, 2.7, 2.6, 0.8); II: 10.8 (3.0, 1.5, 2.9, 2.6, 0.8); III: 8.7 (2.7, 1.3, 1.9, 2.1, 0.7); IV: 10.0 (2.9, 1.2, 2.4, 2.6, 0.9). Spination follows the generic pattern. Metatarsus III–IV with ventral distal preening combs. Palp: tibia with prolateral spines long; vRTA small, rounded in retrolateral view; mRTA triangular, distally rounded in ventral view and fin-shaped in retrolateral view, arising closer to vRTA; tegulum retrolaterally indented, without retro-proximal protrusion; TBC wide, keel-like; TBE with apical projection small, short and laminar (Figs 97–99, 102–105).
Description. Female (paratype, MPEG 30653): Coloration pattern as in male, except opisthosoma densely covered by irregular elongate marks, 5–6 barely distinguishable median chevrons on posterior half and one pair of rounded pale brown muscle impressions on each side of cardiac mark; ventrally with elongate marks laterally and three median, wide, longitudinal stripes converging into irregular cup-shaped mark; muscle sigilla inconspicuous (Figs 95–96). Total length 7.6. Prosoma: 3.3 long, 3.0 wide. Opisthosoma: 4.2 long, 2.5 wide. Eyes: diameters: 0.25, 0.22, 0.13, 0.20; interdistances: 0.20, 0.12, 0.36, 0.27, 0.16, 0.07. Legs (4213): I: 9.3 (2.8, 1.6, 2.3, 2.1, 0.5); II: 9.5 (3.1, 1.6, 2.2, 2.1, 0.5); III: 8.4 (2.6, 1.4, 1.9, 2.0, 0.5); IV: 10.0 (2.8, 1.3, 2.3, 2.8, 0.8). Spination follows the generic pattern, except metatarsi I–III: v2-0-0. Metatarsus III–IV with ventral distal preening combs. Epigyne: epigynal field sub-rectangular, longer than wide, rounded anteriorly; median septum 1.5 times longer than wide, widest medially with posterior margin rounded (Figs 100, 106). Vulva: glandular projection rounded, arising from duct between copulatory opening and first turn; spermathecae elongate, irregular-shaped (Figs 101, 107–108).
Variation. Males (n = 10): total length 5.5–6.6; prosoma length: 2.9–3.3; femur I length 2.6–3.2. Females (n = 10): total length 6.1–9.2; prosoma length 3.1–3.6; femur I length 2.4–3.0.
Distribution. Known from Brazil, western state of Pará, in the lower Amazon region (Fig. 143).
description: Published as part of Rheims, Cristina A., 2020, Revision of the spider genus Sparianthis Simon, 1880 (Araneae, Sparassidae Sparianthinae), pp. 151-191 in Zootaxa 4890 (2) on pages 176-180, DOI: 10.11646/zootaxa.4890.2.1, http://zenodo.org/record/4301730