Tullgrenella sciosciae Marta & Bustamante, 2024

Marta, Kimberly S., Bustamante, Abel A., Hagopián, Damián, Teixeira, Renato A., Brescovit, Antonio D., Valiati, Victor H. & Rodrigues, Everton N. L., 2024, Taxonomic revision of the jumping spider genus Tullgrenella Mello-Leitão, 1941 (Araneae: Salticidae: Freyina), Zootaxa 5411 (1), pp. 1-71 : 50-52

Tullgrenella sciosciae Marta & Bustamante , sp. nov.

Figs 5C , 7O , 38A–D , 39A–D , 53A–B

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Type material. Holotype: ♂, BRAZIL, Rio Grande do Sul, Cambará do Sul [29°04’43.0”S 50°09’01.6”W], IX.2006, M. V. Petry leg. ( MCTP 31075 ) . Paratypes: 1♀, same as holotype ( MCTP 31128 ) ; 1♀, ditto, VIII.2005 ( MCTP 31133 ) ; 1♂, ditto, I.2005 ( MCTP 31134 ) .

Other material examined. BRAZIL, Rio Grande do Sul, Cambará do Sul [29°04’43.0”S 50°09’01.6”W] , X.2005, M. V. Petry leg., 1♀ ( MCTP 31135 ); ditto , IV.2006, 1♂ ( MCTP 31141 ); ditto , I.2005, 1♂ ( MCTP 31128 ); São Francisco de Paula [29°28’50.4”S 50°10’28.2”W] , 24.X.1996, R. Ott leg., 1♂ ( MCTP 10652 ) .

Etymology. The name honors the Argentinean arachnologist Cristina L. Scioscia, who currently serves as a member of the International Commission of Zoological Nomenclature and is the woman arachnologist specializing in the jumping spiders of Latin America. With this, we recognize her importance, through her kindness and endless encouragement, in our careers as jumping spider systematists.

Diagnosis. Males of Tulgrenella sciosciae Marta & Bustamante , sp. nov. resemble those of T. aisenbergae Marta , sp. nov. ( Figs 4E , 38C–D vs 36C–D), by the short embolus not exceeding the cymbium apex and the triangular tegulum, but can be distinguished from them by the tegular membranous process shorter and overlapping the embolar base ( Fig. 38C , see purple arrow), and the larger conductor without borders ( Fig. 38C ). Females are similar to those of T. aisenbergae Marta , sp. nov. by the medial-ventral copulatory opening facing up and the circular medial-dorsal spermathecae ( Figs 5C , 7O vs 7M, 39D vs 37D), but can be distinguished from them by the smaller and strict anterior-dorsal loop of the copulatory ducts ( Figs 7O , 39D ).

Description. Male (MCTP 31075). Total length 4.75. Carapace length 2.50; width 1.65; height 1.25. Cephalic region length 1.25; thoracic region length 1.25. Ocular area length: 0.62; Anterior eyes row: 1.25 wide; Posterior eyes row: 1.35 wide; Distance ALE–PME 0.19; PME–PLE 0.19. Ocular diameter AME 0.35; ALE 0.20; PME 0.08; PLE 0.19. Clypeus height 0.15. Chelicerae, paturon length 0.60; 0.30 wide; Fang 0.35 length. Endites length 0.36; 0.30 wide. Labium length 0.21; 0.21 wide. Sternum length 1.09; 0.60 wide. Abdomen length 2.25; 1.10 wide, height 0.75. Legs, femur length I: 1.28; II: 1.00; III: 1.44; IV: 1.51; patella I: 0.60; II: 0.72; III: 0.68; IV: 0.60; tibia I: 0.72; II: 0.70; III: 0.80; IV: 0.78; metatarsus I: 0.60; II: 0.50; III: 0.80; IV: 0.60; tarsus I: 0.40; II: 0.35; III: 0.48; IV: 0.51. Formula legs: 4312. Palp, length of femur 0.75, patella 0.24, tibia 0.28, cymbium 0.72. Legs macrosetae, femur I: d1–1–1, p2di; II: d1–1–1, p2di, r0–1–2; III: d1–1–1, p0–1–2, r0–1–2di; IV: without. Patella I–II: p1; III–IV: p1, r1. Tibia I: 2–2–2, p1–0–1; II: v1–1–2, p1, r1; III: d1–1–1–1, p1–1–1, r1–1–1; v4 IV: without. Metatarsus I: v0–2–2; II: v0–2–2, p0–1–1; III: d1–1–1–1, v0–2–2, p1–1–1di, r1–1–1di; IV: without. Palp macrosetae, femur: d1–1–1–1. Carapace as in genus ( Figs 36A–B ). Abdomen and spinnerets as in genus ( Figs 38A–B ). Legs yellow and patella, metatarsus, and tarsus with brown spots. Tibia with retrolateral apophysis sclerotized, acute, not exceeding the ventral tegulum ( Figs 38C–D ). Tegulum oblique to cymbium distal apex, longer than wide, with rounded proximal retrolateral lobe of tegulum facing down ( Fig. 38C ). Middle tegulum with central depression with groove ( Fig. 38C ). Embolar base projecting dorso-prolaterally. Embolus thin, sclerotized and slightly curved (9 o’clock), not exceeding cymbium apex ( Fig. 38C ). Projections on the embolus, a large conductor, without borders, about half of embolus length, dorsal and prolateral to spermophore, and tegular membranous process up to embolar base ( Fig. 38C , see purple arrow).

Female (MCTP 31133). Total length 6.08. Carapace length 2.58; width 1.83; height 1.25. Cephalic region length 1.58; thoracic region length 1.00. Ocular area length 1.00; Anterior eyes row 1.50 wide; Posterior eyes row 1.50 wide. Distance ALE–PME 0.20; PME–PLE 0.28. Ocular diameter AME 0.42; ALE 0.25; PME 0.06; PLE 0.16. Clypeus height 0.20. Chelicerae, paturon length 0.88; 0.33 wide; Fang 0.31 length. Endites length 0.41; 0.37 wide. Labium length 0.29, 0.39 wide. Sternum length 1.08, 0.78 wide. Abdomen length 2.92; 1.83 wide; height 1.67. Length femur I: 1.40; II: 1.32; III: 1.44; IV: 1.84. Patella I: 0.84; II: 0.80; III: 0.64; IV: 0.80. Tibia I: 0.92; II: 0.68; III: 0.80; IV: 1.20. Metatarsus I: 0.40; II: 0.56; III: 0.80; IV: 1.40. Tarsus I: 0.40; II: 0.40; III: 0.60; IV: 0.60. Formula legs: 4312. Palp, length femur 0.80; patella 0.36; tibia 0.36; tarsus 0.60. Legs macrosetae, femur I: d1–1–1, p2di; II: d1–1–1, p2di; III: d1–1–1, p2di, r2di; IV: d1–1–1, p1di, r1di. Patella I–II: 0; III–IV: p1, r1. Tibia I: v2–2–2, p1 subdi; II: v1–1–2, p1; III: d1, p2, r2, v–0–1–2; IV: d1, v0–1–2, p2, r2, metatarsus I–II: v0–2–2; III–IV: d1–1–1, v4, p4di. Carapace as in genus ( Figs 39A–B ). Legs lighter brown and yellow. Palp yellow with dark spots on dorsum of sclerites.Abdomen: dorsum greyish–brown, with white spots near posterior abdomen, ventrally and sides as in male ( Figs 39A–B ). Abdomen and spinnerets as in the genus ( Figs 39A–B ). Epigynum with septum, copulatory opening arranged laterally to the borders of the epigynum ( Fig. 39C ), separated by the rounded posteriorly-opening coupling pocket (5C, 7O, 39C–D). Copulatory ducts arranged in one monoplanar spiral ( Figs 5C , 7O , 39C–D ). The first turn large, C-shaped, with a lap on the anteromedial region, the subsequent one dorsal and anterior to the spermathecae ( Fig. 7O ). Spermathecae circular, positioned in the medial part of the epigynum, with the base of fertilization ducts placed on anterior/dorsal surface. Fertilization ducts extended anteriorly to the sides ( Figs 7O , 39D ).

Distribution. Brazil ( Rio Grande do Sul) ( Figs 53A–B ).

Natural history. Found only in the Chacoan subregion ( Figs 53A–B ). The variation in altitudinal occurrence of this species is 908–1006 m a. s. l. ( Figs 53A–B ).

Figures

FIGURE 4. Scanning electronic microscopy of male left palp, ventral view.A T. musica (Mello-Leitão, 1945) (MCN 53370). B T. quadripunctata (Mello-Leitão, 1944) (MCTP 16531). C T. yungae Galiano, 1970 (MCN 44133). D T. serrana Galiano, 1970 (MCTP 31126). E T. aisenbergae Marta, sp. nov. (IBSP 118477). F T. peniaflorensis Galiano, 1970 (FNAG36 1464). Scale bars: 0.50 mm. Colored homology: purple and purple arrow (tegular membranous process), blue (embolar base), green (conductor), magenta (tegulum), orange (embolus), red (pars pendula).

FIGURE 5. Scanning electronic microscopy of epigynum, ventral view. A T. musica (MCN 55519), white arrow: septum. B T. aisenbergae Marta, sp. nov. (MCTP 12575), white arrow: septum. C T. sciosciae Marta & Bustamante, sp. nov. (MCTP 31135), white arrow: septum. D T. galianoae Marta, sp. nov. (MCTP 39711); red dashed line: window, red arrow: fundus membranous groove of the window. Scale bars: 0.25 mm.

FIGURE 7. Illustrations of female epigynum of Tullgrenella, dorsal view. A–E morenensis group: A T. morenensis (Tullgren, 1905) (MCN 19940), B T. guayapae Galiano, 1970 (MCN 55520), C T. brescoviti Estol, Marta & Rodrigues, 2020 (MCN 24104), D T. musica (Mello-Leitão,1945) (MCN 53372), E T. corrugata Galiano, 1981 (MACN-Ar 7206). F–H quadripunctata group: F T. quadripunctata (Mello-Leitão, 1944) (MCTP 2239), G T. nadjae Estol, Marta & Rodrigues, 2020 (MCN 56814), H T. lunata (Mello-Leitão, 1944) (MACN-Ar 6214). I–J melanica group: I T. melanica (Mello-Leitão, 1941) (MACN-Ar 6244), J T. yungae Galiano, 1970 (MCTP 39713). K–O serrana group: K T. serrana Galiano, 1970 (MCTP 12173), L T. legalissima Marta & Hagopián, sp. nov. (IBSP 118228), M T. aisenbergae Marta, sp. nov. (IBSP 123129), N T. gertschi Galiano, 1981 (MACN-Ar 7206), O T. sciosciae Marta & Bustamante, sp. nov. (MCTP 31135). P–Q peniaflorensis group: P T. peniaflorensis Galiano, 1970 (MACN-Ar 6242), Q T. selenita Galiano, 1970 (FNAC 36). Scale bars: 0.25 mm.

FIGURE 36. Male of T. aisenbergae Marta sp. nov. (MCTP 12575). A habitus, dorsal view, red arrow: spotted coloration pattern. B same, ventral view. C left palp, purple arrow: tegular membranous process, ventral view. D same, retrolateral view, red arrow: hook between RTA and prolatero-dorsal tibial apophysis. Scale bars: A–B 1 mm, C–D 0.50 mm.

FIGURE 38. Male of T. sciosciae Marta & Bustamante, sp. nov. A habitus (MCTP 10652), dorsal view, red arrow: spotted coloration pattern. B same, ventral view. C left palp (MCTP 31075), ventral view, red arrow: tegulum central depression, purple arrow: tegular membranous process. D same, retrolateral view, red dashed line: prolatero-dorsal tibial apophysis. Scale bars: A–B 1 mm, C–D 0.50 mm.

FIGURE 39. Female of T. sciosciae Marta & Bustamante, sp. nov. A habitus (IBSP 31133), dorsal view, red arrow: spotted coloration pattern. B same, ventral view, red arrow: subseptum. C epigynum (IBSP 31135), ventral view. D same, dorsal view. Scale bars: A–B 1 mm, C–D 0.25 mm.

FIGURE 53. Neotropical andAndean regionalization (Morrone 2014) and distributional records for species of the serrana group. A Neotropical, South America, Brazilian subregion Chacoan subregion, South America Transition Zone and Andean region. B Southern South America, focusing on species occurrence. C habitat inference, URUGUAY: Sierra de Ríos, photographed by collector Damián Hagopián.