Atelurius segmentatus Simon, 1901

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), Zootaxa 5124 (4), pp. 431-457 : 443-446

Atelurius segmentatus Simon, 1901

urn:lsid:zoobank.org:act:0C2FDE55-EA77-44F1-A33E-C3EC41C3D50A

Figs 35–48 , 61–62 , 67–68 , 77

Atelurius segmentatus Simon, 1901a: 154 , fig. 709 (holotype, ♂, Venezuela, Caracas, deposited in MNHN, not examined); Simon 1901b: 154; Galiano 1963: 303, figs 9–10 (redescription); Galiano 1988: 290, figs 1, 16–17 (distribution).

Revised diagnosis. Males of Atelurius segmentatus can be identified by the finger-like RvTA totally covered with denticles ( Fig. 62 ), hook-shaped, single-lobed RTA and by the lack of any apophysis of the tegulum. Females differ from those of At. dipterioides by the larger atrium ( Fig. 47 ).

Description. Male. See description in Galiano (1963) and illustration in Galiano (1988: 291, figs 16–17). Herein we present new illustrations of the male of Atelurius segmentatus habitus ( Figs 35 – 38 ) and palp ( Figs 39 – 42 , 61–62 ) and the description of the unknown female.

Female (MCN 36915). Total length 3.63. Carapace length: 1.42; width: 1.08; height: 0.71. Cephalic region length: 1.02; Thoracic region length: 0.37. Ocular area length: 0.78; Anterior eyes row: 1.05 wide; Posterior eyes row: 1.12 wide; Distance ALE–PME: 0.10; PME–PLE: 0.20. Ocular diameter AME: 0.30; ALE: 0.13; PME: 0.10; PLE: 0.14. Clypeus height: 0.06. Chelicerae, paturon length: 0.23; 0.20 wide; Fang: 0.14 length. Endites length: 0.12; 0.21 wide. Labium length: 0.12; 0.18 wide. Sternum length: 0.54; 0.37 wide. Abdomen length: 2.00; 1.36 wide, height: 1.02. Legs, femur length I: 0.65; II: 0.63; III: 0.63; IV: 0.71; patella I: 0.37; II: 0.23; III: 0.21; IV: 0.39; tibia I: 0.44; II: 0.31; III: 0.39; IV: 0.50; metatarsus I: 0.31; II: 0.31; III: 0.39; IV: 0.46; tarsus I: 0.31; II: 0.31; III: 0.31; IV: 0.33. Formula legs: 4132. Palp, length of femur: 0.31, patella: 0.12, tibia: 0.10, tarsus: 0.50. Legs macrosetae, femur I: d1-1-1, p1di; II: d0-1-1, p1di, r1di; III: d0-1-0, p1di, r1di; IV: d1-1-1, p1di, r1di. Patella I–IV: 0. Tibia I: v2di; II: v0-2-2; III–IV: 0, metatarsus I–II: v2-2; III–IV: v2di, p2di, r2di. Carapace: reddish brown, surface covered with small depressions ( Fig. 43 ), with sparse white and yellow scales ( Figs 43–45 ), reddish cephalic region and dark thoracic region. Anterior half of thoracic region at the same level of cephalic ( Fig. 45 ), followed by abrupt slope ( Fig. 45 ). Eyes surrounded by black spots and white scales. White scales between the AME ( Fig. 46 ). Clypeus reddish, with long white setae ( Fig. 46 ). Chelicerae brown with white scales, parallel, vertical, apex thicker than the base, promargin with four teeth on the same base, with the distal one reduced, and retromargin with one tooth. Endites brown as chelicerae, with no protruding external angles ( Fig. 44 ). Labium brown, longer than wide. Sternum slightly narrower than the base of labium, oval, brown ( Fig. 44 ). Legs yellow, femora with transversal light brown marks extending prolaterally onto distal part, and tibiae with two marks, on proximal and distal parts ( Fig. 43 ). Tarsal claws small, with twelve inferior teeth of equal sizes in females and with reduced claw tufts. Abdomen dorsally yellow, with brown chevrons. With a median longitudinal brown stripe of irregular form, and with a brown arrow-shaped spot on anterior region ( Fig. 43 ). Epigyne: large atrium ( Figs 47 , 68 ), sclerotized ventral plate partially covering a portion of the copulatory ducts ( Fig. 47 , see arrow). Copulatory ducts with two portions, the initial portion membranous ( Fig. 48 ) and a sclerotized part at medial region with a fold that covers the spermathecae ( Fig. 48 ). The base portion of FD anteriorly placed on the spermathecae ( Fig. 48 ). Sides with longitudinal brown stripe ( Fig. 45 ). Spinnerets: yellow as legs.

Material examined. BRAZIL: Minas Gerais, Leme do Prado, Estação Ecológica de Acauã, Poção (17º7’56.22”S 42º46’7.98”W), 1 ♀ ( UFMG 20001 ), 18–28.II.2003, P.H. Martins leg. ; Rio de Janeiro, Macaé, Ilha de Santana (22°24’56.9”S 41°42’12.1”W), 1 ♂ ( MNRJ 06742 ), night collection, 18.X.1986, R.C.L. Baptista leg. ; 1 ♀ ( MCN 36915) , Rio Grande do Sul, Palmares do Sul, Fazenda das Almas [30º25’22.0”S 50º40’39.2”W], 1 ♀ ( MCN 36915), collected by beating tray, 13.XI.2003, Equipe Probio leg. ; Palmares do Sul, Buraco Quente [30°15’44.9”S 50°30’37.3”W], 1 ♂ and 2 ♀ ( MCN 36805), 11.XI.2003, Equipe Probio leg. ; Viamão, Parque Estadual de Itapuã [30º20’46.7”S 51º01’33.1”W], 1 ♀ ( MCTP 13701 ), IV.2002, L.E.C. Schimit leg. ; Triunfo, Parque Copesul de Proteção Ambiental [currently Braskem] [29°51’57.6”S 51°21’54.9”W], 1 ♀ ( MCN 38184), 06.I.2005, R. Ott et al. leg .; 1 ♀ ( MCN 39954), 25.VIII.2008, R. Ott leg. ; 2 ♀ ( MCN 40118), 07.XII.2005, beating tray, R. Ott & A. Barcellos leg. ; 1 ♀ ( MCN 44178), 09.VII.2008, A. Barcellos leg. ; Barra do Ribeiro, Fazenda Boa Vista [30°25’14.0”S 51°20’57.3”W], 1 ♀ ( MCN 36979), 16.XII.2003, beating tray, Equipe PROBio leg .; Tapes, Fazenda São Miguel [30°31’38.0”S 51°21’42.4”W], collection on Butia spp. , 1 ♀ ( MCN 35525), 14.V.2003, Equipe PROBio leg .; 1 ♂ and 1 ♀. ( MCN 37037), 17.XII.2003, beating tray on Butia spp .; 19.XII.2003, 1 ♂, ( MCN 36974), beating tray ; Fazenda Guará [30°40’28.0”S 51°24’20.8”W], 2 ♂ ( MCN 35651, 35673 ), 15.V.2003 ; 1 ♂ ( MCN 36965), 19.XII.2003, collection on Butia spp. by beating tray, Equipe PROBio leg .; Cristal, Rio Camaquã (31°00’17.1”S 52°03’56.8”W), 1 ♂ ( MCN 49030), 21.VI.2008, beating tray Riparian Forest , E.N.L. Rodrigues leg. ; Cachoeira do Sul, Cordilheira [30°13’09.8”S 52°50’57.4”W], 1 ♀ ( ZUFSM 91 /010; temporally at MPEG), VII.1992, R.G. Buss leg.

Distribution. Venezuela [Caracas ( Galiano 1963)], Brazil [Minas Gerais, Rio de Janeiro, São Paulo, Rio Grande do Sul] ( Fig. 77 ).

Natural history. Most individuals were collected with a beating tray and, hence, the species can be considered arboreal. Some individuals were collected in a natural formation of “butiazal” ( Butia spp. ) and in Riparian Forest (see Rodrigues et al. 2014, 2016). Species occurs between 10 and 900 m a. s. l.

Figures

FIGURES 35–42. Male of Atelurius segmentatus. Habitus (MCN 49030): 35 dorsal view, white arrow: chevrons coloration pattern; 36 ventral view; 37 lateral view; 38 face, frontal view, scale bars: 0.50 mm. Left male palp: 39 ventral view; 40 dorsal view; 41 prolateral view 42 retrolateral view, scale bars: 0.25 mm.

FIGURES 43–48. Female of Atelurius segmentatus. Habitus (MCN 36915): 43 dorsal view, white arrow: chevrons coloration pattern; 44 ventral view, white arrow: ventrally chitinized plate; 45 lateral view; 46 face, frontal view. Scale bars: 1 mm. Epigyne female 47 ventral; 48 dorsal. Scale bars: 0.10 mm.

FIGURES 59–64. Scanning electronic microscopy (SEM). Male palp of Guriurius minuano sp. nov. (MCTP 38993): 59 ventral view, arrow: tegulum depression; 60 ventral view, arrow: ventral surface RvTA. Male palp of At. segmentatus (MCN 36806): 61 ventral view; 62 detail of RvTA dorsal surface. Male palp of Si. gladifer (MCTP 31078): 63 ventral view, arrow: tegulum depression; 64 details of RvTA arrow: RvTA ventral surface.

FIGURE 65–70. Scanning electronic microscopy (SEM). Male of Si. gladifer (MCTP 31078): 65 carapace surface, 66 claw surface. Female of A. segmentatus (MCN 401182): 67 carapace surface, 68 epigyne ventral view. Subadult Guriurius minuano sp. nov. (MCN 32225): 69 carapace surface, 70 male epiandric spigots.

FIGURES 77–78. Regionalization in Neotropical view (Morrone 2014) and distributional records for huriine jumping spiders (records of Urupuyu not included). 77 Neotropical, South America, Brazilian subregion Chacoan subregion, South America Transition Zone, Andean Region. 78 Southern of South America, Brazil, Uruguay, Argentina focusing on the distribution of Guriurius.