Nyetnops buruti, Sánchez-Ruiz & Brescovit & Bonaldo, 2020

Sánchez-Ruiz, Alexander, Brescovit, Antonio D. & Bonaldo, Alexandre B., 2020, Revision of the spider genus Nyetnops Platnick & Lise (Araneae: Caponiidae) with proposition of the new genus Nopsma, from Central and South America, Zootaxa 4751 (3), pp. 461-486 : 474

Nyetnops buruti new species

Figures 8I ; 9 A–F

Type. Male holotype ( IBSP 99039) from Piraputanga, Dois Irmãos do Buriti (20°29’15”S 55°31’55”W), Mato Grosso do Sul, Brazil, 31.vi–6.vii.1999, A.D. Brescovit et al.

Additional material examined. BRAZIL: Mato Grosso do Sul: Corumbá, Sub-regiões Miranda e Abobral , Passo do Lontra (19°34’27”S 57°02’16”W), vi.1998 – xi.1999, J. Raizer et al., 1♀ imm ( IBSP 121588 ) .

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. Males of N. buruti n. sp. resembles those of N. lachonta n. sp. by the length of copulatory bulb (tegulum + embolus) being more than two times the palpal tibia length ( Figs 8 B–C; 9B–C), differing by having a thicker large bulb with a narrower tegulum basal section ( Fig. 8I ).

Description. Male (holotype): Total length 5.9. Carapace 2.2 long, 1.8 wide. Sternum 1.8 long, 1.6 wide. Leg measurements: I: 2.85; II: 2.85; III: 2.35; IV: 3.1. Carapace light orange with pattern ( Fig. 9E ). Chelicerae, palps and legs orange; coxae and trochanters lighter. Endites, labium and sternum light orange. Abdomen light gray, without a remarkable pattern ( Fig. 9A ). Anal tubercle and spinnerets lighter than abdomen. Anterior legs without arolium, crista or gladius. Palp with thick large copulatory bulb, slightly swollen at tegulum apical section and narrow at basal section ( Figs 8I ; 9 B–C), tegulum surface mostly smooth, embolus with surface mostly covered with fine and longitudinal grooves, embolus tip beveled and slightly sinuous, without noticeable projections.

Female: unknown.

Distribution. Known only from the State of Mato Grosso do Sul, Brazil ( Fig. 10C ).

Figures

FIGURE 8. A–F Nyetnops lachonta n. sp., male (holotype). A Habitus, dorsal view. B Left palp, prolateral view. C Left palp, retrolateral view. D Habitus, ventral view. E Prosoma, dorsal view. F Same, ventral view. G–J Copulatory bulb drawings. G Nyetnops guarani Platnick & Lise. H Nyetnops naylienae n. sp. I Nyetnops buruti n. sp. J Nyetnops lachonta n. sp. Scale bar: A, D (1mm); B–C, E–J (0.5mm). G–H and I–J share scale bars. Abbreviations: tas—tegulum apical section, tbs—tegulum basal section, e—embolus.

FIGURE 9. Nyetnops buruti n. sp., male (holotype). A Habitus, dorsal view. B Left palp, prolateral view. C Left palp, retrolateral view. D Habitus, ventral view. E Prosoma, dorsal view. F Same, ventral view. Scale bar: A, D (1mm); B–C, E–F (0.5mm).

FIGURE 10. A–B Drawings of female genitalia, dorsal view. Scale bar: 0.25mm.A Nyetnops guarani Platnick & Lise. B Nyet- nops naylienae n. sp. C Distribution map of Nyetnops guarani Platnick & Lise (circles), Nyetnops buruti n. sp. (stars) Nyetnops lachonta n. sp. (square) and Nyetnops naylienae n. sp. (triangle). Abbreviations: as—anterior tracheal spiracles, dmr—distal margin of receptaculum, ap—anterior plate, ess—external sclerotization around spiracles, pmr—proximal margin of receptaculum, pp—posterior plate, ps—posterior tracheal spiracles, re—receptaculum, ue—uterus externus.