Nyetnops naylienae, 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 : 463-470

Nyetnops naylienae new species

Figures 4–7 , 8H , 10B

Types. Male holotype (IBSP 89356) and female paratype (IBSP 249865) from Rio Yuyapichis, Panguana Biological Station (09’37’S 74°56’W), Huanuco, Peru, 24.xii.1983, M. Verhaagh. Male and female paratypes (IBSP 89353) and male paratype (IBSP 89350), same data as holotype.

Additional material examined. PERU: Huanuco, Puerto Inca, Panguana Biological Station (09’37’S 74°56’W), 24.xii.1983, M. Verhaagh, 1♂ ( SMNK-AR 12387 ); 2♀ ( SMNK-AR 12388 , 12390 ); 1♂ ( SMNK-AR 12387 ) . Rio Yuyapichis, Panguana Biological Station (09’37’S 74°56’W) 24.xii.1983, M. Verhaagh, 2♂ ( IBSP 89355 , for SEM); 1♀ ( IBSP 89354 ); 1♂ ( IBSP 89351 ); 1♂ 1♀ ( IBSP 89346 ) .

Etymology. The specific name is a patronymic honoring Naylien Barreda Leyva, the first author’s wife.

Diagnosis. Males of N. naylienae n. sp. resembles those of N. guarani by having a short copulatory bulb (tegulum + embolus), the length just two times or less the palpal tibia length ( Figs 1 B–C; 4B–C), but differ by the swollen tegulum apical section (tas), just a little wider than basal section and similar to the palpal tibia width ( Figs 4 B–C; 8H) and by the beveled embolus tip with very long rooster crest like projections ( Fig. 7 A–F). Females are readily recognized by the concave distal margin of receptaculum (dmr) with two triangular lobes both sides ( Figs 4I ; 7 G–H; 10B) and the narrower posterior plate ( Fig. 10B ). Additionally, both males and females present a marked carapace pattern ( Fig. 4A, E, G ) as in Nyetnops guarani , but lighter in color.

Description. Male (holotype IBSP 89356): Total length 5.6. Carapace 1.8 long, 1.7 wide. Sternum 1.7 long, 1.6 wide. Leg measurements: I: 2.80; II: 2.75; III: 2.30; IV: 3.05. Carapace orange with a pattern ( Fig. 4E ). Chelicerae, palps and legs orange; coxae and trochanters lighter. Endites, labium and sternum light orange. Abdomen gray, without a remarkable pattern ( Fig. 4A ). Anal tubercle and spinnerets lighter than abdomen. Anterior legs without arolium, crista or gladius ( Figs 5H ; 6A ). Palp with elongated copulatory bulb and apical section of tegulum swollen ( Figs 6 D–F; 8H), tegulum surface mostly smooth, connecting with an elongated embolus with a surface mostly covered with fine and longitudinal grooves ( Fig. 7 A–F), embolus tip beveled and slightly sinuous with very long rooster crest like projections ( Fig. 7B ).

Female (paratype IBSP 89356): Total length 5.7. Carapace 1.8 long, 1.6 wide. Sternum 1.7 long, 1.6 wide. Leg measurements: I: 2.75; II: 2.70; III: 2.25; IV: 3.0. Same color and patterns as in males. Anterior legs without aro- lium, crista or gladius. External genital area with anterior plate weakly sclerotized ( Fig. 4H ), posterior plate narrow; internal area with a concave distal margin of posterior receptaculum which has two triangular lobes both sides ( Figs 7 G–H; 10B).

Distribution. Known only from Huanuco, Peru ( Fig. 10C ).

Figures

FIGURE 1. Nyetnops guarani Platnick & Lise. A–F Male (IBSP 151469); G–I Female (IBSP 154310). 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 Habitus, dorsal view. H External genital area, ventral view. I Internal genitalia, dorsal view. Scale bar: A, D, G (1mm); B, C, E, F, H, I (0.5mm).Abbreviations: ap—anterior plate, ess—external sclerotization around spiracles, go—genital opening, pp—posterior plate, re—receptaculum.

FIGURE 4. Nyetnops naylienae n. sp. A–F Male (SMNK-AR 12387); G–I Female (SMNK-AR 12388).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 Habitus, dorsal view. H External genital area, ventral view. I Internal genitalia, dorsal view. Scale bar: A, D, G (1mm); B, C, E, F, H, I (0.5mm).Abbreviations: ap—anterior plate, ess—external sclerotization around spiracles, go—genital opening, re—receptaculum.

FIGURE 5. Nyetnops naylienae n. sp., male (IBSP 89355). A Prosoma, frontal view. B Same, lateral oblique view. C Same, detail of mouthparts, lateral oblique view. D Left leg IV, retrolateral view. E Same, tibia, metatarsus and tarsus, retrolateral view. F Same, femur, retrolateral view. G Left metatarsus and tarsus I, retrolateral view. H Joint of metatarsus and tarsus I, retrolateral view. I Left metatarsus and tarsus I, retrolateral oblique view. J Left tibia II, prolateral view. K Left metatarsus and tarsus II, retrolateral view. L Joint of metatarsus and tarsus II, retrolateral view. Abbreviations: aj—adesmatic joints, dms—dorsal metatarsal stopper.

FIGURE 6. Nyetnops naylienae n. sp., male (IBSP 89355).A Left pretarsus II, retrolateral view. B Left pretarsus III, retrolateral view. C Tarsal organ, leg III, dorsal view. D Left palp, prolateral oblique view. E Copulatory bulb, prolateral oblique view. F Same, ventral view. G Same, apical view. H Stridulatory pick at base of palpal femur, prolateral view. I Spinnerets, posterior view. J Tip of cymbium, retrolateral view. K Detail of setae on cymbium tip, retrolateral view. L Tip of cymbium, prolateral view. Abbreviations: cb—copulatory bulb.

FIGURE 7. Nyetnops naylienae n. sp. A–F Left embolus on male (IBSP 89355). A Prolateral view. B Detail of tip, prolateral view. C Prolateral oblique view. D Retrolateral oblique view. E Retrolateral view. F Apical view. G—I Internal female genitalia, dorsal view (IBSP 89346). G Receptaculum and uterus externus. H Same, detail of left lobe on receptaculum. I Same, detail of trachea. Abbreviations: dmr—distal margin of receptaculum, e—embolus, re—receptaculum, pmr—proximal margin of receptaculum t—tegulum, tk—tracheal trunk, ue—uterus externus.

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 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.