Guriurius minuano Marta, Bustamante, Ruiz & Rodrigues 2022, sp. nov.
Creators: name: Marta, Kimberly S.
name: Bustamante, Abel A.
name: Ruiz, Gustavo R. S.
name: Teixeira, Renato A.
name: Hagopián, Damián
name: Brescovit, Antonio D.
name: Valiati, Victor Hugo
name: Rodrigues, Everton N. L.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Guriurius
Guriurius minuano

description: Guriurius minuano Marta, Bustamante, Ruiz & Rodrigues, sp. nov.
urn:lsid:zoobank.org:act: 820579A9-6AF-4BDA-A4E2-B31B86763931
Figs 1–24, 59–60, 65–67, 69–78
Type material. Holotype. ♂ (MCN 32225), BRAZIL: Fazenda Chapada [30º25’23.5”S 52º18’41.4”W], Dom Feliciano, Rio Grande do Sul, 18–19.III.2000, A.B. Bonaldo leg. Paratypes. 1 ♂ (UFMG 6459), BRAZIL: São Paulo: Jundiaí, Parque Estadual da Serra do Japi (23°17’00.0”S 46°59’00.0”W), XII.2007, Jack leg.; 1 ♂ (MCTP 38963), BRAZIL: Paraná: São José dos Pinhais, Miringuava [25°36’18.0”S 49°11’37.0”W], 02.I.2014, A.C. Domahovski leg.; 1 ♂ (94/010 ZUFSM: Temporarily at MPEG), BRAZIL: Rio Grande do Sul: Santa Maria, Taquarixim [29°44’17.6”S 53°50’38.3”W], 07.X.2003, A.B.B. Morais leg.; 1 ♀ (MCTP 40587), BRAZIL: Santa Maria [29°39’00.1”S 53°47’00.6”W], 24.XII.1995, C.B. Kotzian & L. Indrusiak leg.; 1 ♀ (MCTP 21675), BRAZIL: Rio Grande do Sul: Itaara [29°36’57.2”S 53°45’30.9”W], 27.X.2005, L. Indrusiak leg.; 1 ♂, (MCTP 20285), BRAZIL: Rio Grande do Sul: Novo Cabrais, Parque Witeck [29°46’59.0”S 52°58’18.9”W], 03.I.2008, R.G. Buss leg.; 1 ♂ (MACN-Ar 39436), ARGENTINA: Buenos Aires: Punta Indio [35°16’12.0”S 57°15’36.0”W], C.L. Scioscia leg., 16–19.XI.1991.
Etymology. The specific epithet honors the Minuano ethnic group. The indigenous name is a reference to a wind of polar origin (Atlantic polar air mass) with a southwest orientation that blows in the state of Rio Grande do Sul, where this species is widespread. Noun in apposition.
Diagnosis. Males of G. minuano can be recognized by the squared lower edge of RvTA (See arrow in the Figs 5, 21). Females of G. minuano can be recognized by the presence of a chitinized plate dorsally on the epigyne, covering half of the copulatory ducts (= genus diagnosis; see arrow in the Figs 14, 24), spermathecae positioned anterior to the atrium region (Figs 13, 23, 24) and the pair of large LPO, arranged in parallel on the posterior border of epigyne (Figs 14, 24).
Description. Male (Holotype MCN 32225). Total length: 4.42. Carapace length: 1.92; width: 1.3; height: 0.84. Cephalic region length: 1.56; thoracic region length: 0.46. Ocular area length: 0.35; Anterior eyes row: 1.3 wide; Posterior eyes row: 1.3 wide; Distance ALE–PME: 0.10; PME–PLE: 0.25; Ocular diameter AME: 0.42; ALE: 0.21; PME: 0.06; PLE: 0.14. Clypeus height: 0.12. Chelicerae, paturon length: 0.46; 0.31 wide; Fang: 0.31 length. Endites length: 0.35; 0.31 wide. Labium length: 0.21; 0.29 wide. Sternum length: 0.84; 0.52 wide. Abdomen length: 2.31; 1.36 wide; height: 1.26. Legs: length of femur I: 1.26; II: 1.05; III: 0.94; IV: 1.05; patella I: 0.84; II: 0.63; III: 0.42; IV: 0.52; tibia I: 1.05; II: 0.63; III: 0.63; IV: 0.77; metatarsus I: 0.84; II: 0.63; III: 0.63; IV: 0.63; tarsus I: 0.46; II: 0.37; III: 0.42; IV: 0.42. Leg formula: 1423. Palp, length of femur: 0.52, patella: 0.25, tibia: 0.21, cymbium: 0.50. Palp macrosetae, femur: d0-1-0. Legs macrosetae, femur I–II: d1-1-1, p1di, r0; III: d0-1-1, p2di, r1; IV: d1-1-1, p1, r1, patella I: 0; II: p1, r0; III–IV: 0, tibia I–II: p1di, r0-1-1, v0; III: p1di, r0-1-1, v1pdi; IV: p1di, r1-1-1, v2pdi and metatarsus I: v0-2-2; II: v0-2-2; III: v0-0-2, p2di, r2di; IV: v0-0-2, p0-2-2, r0-2-2. Carapace: reddish-brown. Eyes with white scales between AME (Fig. 4). Clypeus brown, with a line of brown scales and few sparse white scales. Chelicera without ornamentations, not divergent, with four promarginal teeth, with the distal tooth reduced and a single retromarginal tooth. Endites without projections, few yellow setae, lighter apex, and rounded edges (Fig. 2). Labium with posterior region darkened and lighter apex, as wide as long (Fig 2). Sternum orange, truncated, and shaped as inverted pentagon (Fig. 2). Legs: yellow. Palp: femur yellow, laterally with median dark spots on both sides. RTA without lobes, thick and sinuous (in lateral view) at the tip, sclerotinized, conspicuous, half the size of the tegulum (Figs 8, 22). RvTA inserted ventrally, below the tegulum, with retrolateral inclination, few white scales on the dorsum and with ventral part, hooked-shaped with square base, tip curved towards tegulum (distal portion) (see arrows in the Figs 5, 21). Dorsal cymbium suboval. Tegulum circular, inclined obliquely in relation to the apex of the cymbium (5, 21). Embolar base dorso-prolateral (7:00 o’clock), embolar path around the tegulum 180º (Figs 5, 7, 21). Abdomen: dorsally with brown chevrons, as described for the genus. Spinnerets: yellow as legs.
Female (Paratype MCTP 40587). Length: 5.2 Carapace length: 1.76; width: 1.35; height: 0.78. Cephalic region length: 1.19; Thoracic region length: 0.62. Ocular area length: 0.57; Anterior eyes row: 1.32 wide; Posterior eyes row: 1.40 wide; Distance ALE–PME: 0.12; PME–PLE: 0.31; Ocular diameter AME: 0.46; ALE: 0.21; PME: 0.06; PLE: 0.21. Clypeus height: 0.10. Chelicerae, paturon length: 0.50; 0.31 wide; Fang: 0.21 length. Endites length: 0.25; 0.25 wide. Labium length: 0.14; 0.23 wide. Sternum length: 0.78; 0.46 wide. Abdomen length: 3.12; 1.74 wide, height: 1.69. Legs, femur length I: 0.73; II: 0.63; III: 1.05; IV: 1.05; patella I: 0.63; II: 0.52; III: 0.52; IV: 0.42; tibia I: 0.48; II: 0.73; III: 0.67; IV: 0.73; metatarsus I: 0.31; II: 0.42; III: 0.73; IV: 0.63; tarsus I: 0.33; II: 0.31; III: 0.42; IV: 0.42. Formula legs: 4321. Palp, femur length: 0.42, patella: 0.23, tibia: 0.25, tarsus: 0.33. Legs macrosetae, femur I–II: d1-1-1, p1di; III: d0-1-1, p1di, r1di; IV: d0-1-1, p1di, r1di, patella I–IV: 0, tibia I–II: v0-0-2; III: v0- 1p-2di; IV: p1di, r1-1-1, v0-1p-2 and metatarsus I–III: v0-2-2; IV: v0-0-2, p0-1-2, r1-1-1. Carapace dark reddishbrown, with yellow setae on laterals and on the thoracic region, as in male (Figs 9, 11). Clypeus dark-reddish brown, with white scales around AME (Fig. 12). Chelicerae, promargin with four fused teeth, distal tooth reduced, and retromargin with one tooth. Endites as in male. Labium wide, brown and with lighter apex. Sternum shaped as in male, but brown. Legs: dark yellow. Abdomen: dorsum grey, with brown chevrons, ventrally and sides as in male, but darker. Epigyne: copulatory openings C-shaped, forming an atrium in the medial region of the epigyne (Figs 13, 23). Copulatory ducts arranged in parallel and close to each other in the medial region and can be visualized in ventral view, through the atrium, and anterior to the atrium (Figs 13 – 14, 23–24). Spermathecae kidney-shaped with the base of fertilization duct placed on anterior/dorsal surface of spermathecae, close together, and fertilization ducts extend anteriorly to the sides (Figs 14, 24). Spinnerets: coloration as legs.
Other material examined. BRAZIL: Rio Grande do Sul: Cachoeira do Sul, Cordilheira [30°13’09.8”S 52°50’57.4”W], 1 ♂ (ex-ZUFSM 91/010; used in SEM images), VII.1992, R.G. Buss leg.; URUGUAY: Rivera, Represa de OSE A [30°51’42.1”S 55°37’06.1”W], 2 ♀ (FCE-Ar 2982, FCE-Ar 4084), 29–30.X.2010, M. Simó et al. leg.; Montevideo, Parque Lecocq [34°47’31.3”S 56°19’56.9”W], 1 ♂ (FCE-Ar 9470), 12.V.2018, L. Morena leg., manually collected in monoculture of Eucalyptus sp.; Florida, Rincón de Vignoli, Estancia “La Rinconada“ [34°19’42.4”S 56°19’40.6”W], 1 ♂ (FCE-Ar 11639), 31.X.2020, A. Mailhos leg.; Río Negro, Estancia “Las Cadenas“ [32°30’59.5”S 58°03’00.5”W], 2 ♀ and 1 ♂ (FCE-Ar 11739), 01.V.2020, A. Mailhos leg.; 1 ♀ (FCE-Ar 11740), collected in Riparian forest, 29.VI.2020, A. Mailhos leg.; El Matorral, Montes Del Plata [34°13’29.6”S 58°02’59.5”W], 1 ♂ (FCE-Ar 11713), collected by G-Vac, 27.V.2020, M. Simó leg.; Lavalleja, Cerro Arequita [34°17’16.41”S 55°16’7.31”W], 1 ♀ (FCE-Ar 11662), 12.XI.2005, M. Simó leg.; Cerro Largo, Arévalo, UPM Forestal Oriental [32°29’09.5”S 55°02’49.8”W], 1 ♂ (FCA-Ar 19043), manually collected in Riparian Forest, 24.V.2020, M. Simó leg.
Distribution. Southern Brazil [São Paulo, Paraná, Rio Grande do Sul], Uruguay [Montevideo, Florida, Río Negro, Lavalleja, Cerro Largo], and Argentina [Buenos Aires] (Figs 77–78).
Natural history. Some specimens were collected with a beating tray and/or G-Vac and can be considered of arboreal and shrub niche. Some were collected manually, found in Eucalyptus sp. plantations and edges of Riparian Forests. Some juveniles were found foraging, hanging by a thread of silk at night in branches of trees and shrubs in riparian forests. In addition, the altitudinal occurrence of this species is 4–1000 m. a. s. l. (Figs 77 – 78).
description: Published as part of Marta, Kimberly S., Bustamante, Abel A., Ruiz, Gustavo R. S., Teixeira, Renato A., Hagopián, Damián, Brescovit, Antonio D., Valiati, Victor Hugo & Rodrigues, Everton N. L., 2022, A new huriine genus and notes on morphological characters (Araneae: Salticidae: Salticinae), pp. 431-457 in Zootaxa 5124 (4) on pages 435-439, DOI: 10.11646/zootaxa.5124.4.2, http://zenodo.org/record/6417643