Sparianthis juruti, Rheims, 2020

Rheims, Cristina A., 2020, Revision of the spider genus Sparianthis Simon, 1880 (Araneae, Sparassidae Sparianthinae), Zootaxa 4890 (2), pp. 151-191 : 176-180

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 ).

Figures

FIGURES 1–6. 1 Sparianthis ravida (Simon) (IBSP 165052, female); 2–6 Sparianthis juruti sp. nov. (MPEG 30645, female). 1 left chelicera, ventral view (arrow points to retrolateral escort seta); 2 left endite, serrula, ventral dorsal view; 3 left leg I, metatarsus, trilobate membrane, dorsal view; 4 left leg IV, metatarsus, preening comb (arrow points to preening comb spines), ventral view; 5 left leg I, tarsus, tricobothrium, dorsal view (arrow points to basal bulb of setae); 6 left leg II, tarsus, tarsal organ, dorsal view. DP = distal plate; PP = proximal plate.

FIGURES 7–10. 7, 9 Sparianthis juruti sp. nov. (MPEG 30645, female); 8, 10 Sparianthis ravida (Simon) (MPEG 30835, male). 7 left leg I, tarsus, claws, prolateral view; 8 epiandrium, ventral view; 9 palp, tarsus, claw; 10 palp, cymbium, sensory scopula, detail of sensory seta.

FIGURES 93–96. Sparianthis juruti sp. nov., habitus. 93–94 male (MPEG 30645) (93 dorsal, 94 ventral); 95–96 female, paratype (MPEG 30819) (95 dorsal, 96 ventral). Scale lines: 2 mm.

FIGURES 97–101. Sparianthis juruti sp. nov. 97–99 male (IBSP 30645), left palp (97 prolateral, 98 ventral, 99 retrolateral); 100–101 female, paratype (MPEG 8563) (100 epigyne, 101 vulva). Scale lines: 1 mm.

FIGURES 102–108. Sparianthis juruti sp. nov. 102–104 male, paratype (MPEG 30648), left palp (102 prolateral, 103 ventral, 104 retrolateral); 105 male (MPEG 30642) detail of embolus, retrolateral; 106–108 female, paratype (MPEG 30736) (106 epigyne, 107 vulva, 108 schematic course of internal duct structure). Scale lines: 1 mm. af = anterior furrow; ap = apical projection; dRTA = dorsal branch of RTA; lf = lateral furrow; mRTA = medial branch of RTA; sp = subdistal projection of embolus; TBC = tegular projection at base of conductor; TBE = tegular projection at embolus base; vRTA = ventral branch of RTA.

FIGURES 143–144. Distribution maps for Sparianthis spp. 143 S. beebei sp nov., S. caracarai sp. nov., S. granadensis (Keyserling), S. juruti sp. nov., S. magalopalpa (Caporiacco) and S. picta (Simon); 144 S. boraris sp. nov., S. chickeringi (Gertsch), S. crulsi (Mello-Leitão), S. humaita sp. nov., S. juazeiro sp. nov. and S. ravida (Simon).

FIGURES 122–127. Sparianthis picta (Simon). 122–124 male (IBSP 165053), left palp (122 prolateral, 123 ventral, 124 retrolateral); 125–127 female, syntype (MNHN 7213) (125 epigyne, 126 vulva, 127 schematic course of internal duct system). Scale lines: 1 mm. af = anterior furrow; ap = apical projection; dRTA = dorsal branch of RTA; E = embolus; lf = lateral furrow; mRTA = medial branch of RTA; TBC = tegular projection at conductor base; TBE = tegular projection at embolus base; vRTA = ventral branch of RTA.

FIGURES 80–85. Sparianthis humaita sp. nov. 80–82 male, holotype (IBSP 8803) left palp (80 prolateral, 81 ventral, 82 retrolateral); 83–85 female, paratype (IBSP 8675) (83 epigyne, 84 vulva, 85 schematic course of internal duct system). Scale lines: 1 mm. af = anterior furrow; ap = apical projection; dRTA = dorsal branch of RTA; GP = glandular projection; lf = lateral furrow; pt = retro-proximal protrusion; TBC = tegular projection at conductor base; TBE = tegular projection at embolus base; vRTA = ventral branch of RTA.