Nyetnops naylienae,

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

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Nyetnops naylienae

new species

Nyetnops naylienae  new species

Figures 4–7View FIGURE 4View FIGURE 5View FIGURE 6View FIGURE 7, 8HView FIGURE 8, 10BView FIGURE 10

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 89355View Materials, for SEM); 1♀ ( IBSP 89354View Materials); 1♂ ( IBSP 89351View Materials); 1♂ 1♀ ( IBSP 89346View Materials)  .

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 1View FIGURE 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 4View FIGURE 4 B–C; 8H) and by the beveled embolus tip with very long rooster crest like projections ( Fig. 7View FIGURE 7 A–F). Females are readily recognized by the concave distal margin of receptaculum (dmr) with two triangular lobes both sides ( Figs 4IView FIGURE 4; 7View FIGURE 7 G–H; 10B) and the narrower posterior plate ( Fig. 10BView FIGURE 10). Additionally, both males and females present a marked carapace pattern ( Fig. 4A, E, GView FIGURE 4) 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. 4EView FIGURE 4). Chelicerae, palps and legs orange; coxae and trochanters lighter. Endites, labium and sternum light orange. Abdomen gray, without a remarkable pattern ( Fig. 4AView FIGURE 4). Anal tubercle and spinnerets lighter than abdomen. Anterior legs without arolium, crista or gladius ( Figs 5HView FIGURE 5; 6AView FIGURE 6). Palp with elongated copulatory bulb and apical section of tegulum swollen ( Figs 6View FIGURE 6 D–F; 8H), tegulum surface mostly smooth, connecting with an elongated embolus with a surface mostly covered with fine and longitudinal grooves ( Fig. 7View FIGURE 7 A–F), embolus tip beveled and slightly sinuous with very long rooster crest like projections ( Fig. 7BView FIGURE 7).

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. 4HView FIGURE 4), posterior plate narrow; internal area with a concave distal margin of posterior receptaculum which has two triangular lobes both sides ( Figs 7View FIGURE 7 G–H; 10B).

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