Nyetnops Platnick & Lise, 2007

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 : 462

Genus Nyetnops Platnick & Lise, 2007

Type species: Nyetnops guarani Platnick & Lise, 2007 .

Other species included. Nyetnops naylienae n. sp., N. lachonta n. sp. and N. buruti n. sp.

Diagnosis. Members of Nyetnops can be distinguished from non-nopine genera by having tarsi subsegmented ( Figs 2A ; 5G, I, K ); and from other two-eyed nopine genera by lacking all three membranous modifications on anterior legs: crista, gladius and arolium ( Figs 2 A–B; 5H; 6A–B). In addition, males of Nyetnops can be distinguished from other nopine genera by having an extraordinary elongated copulatory bulb with limits between tegulum and embolus being discerned only by differences in the cuticle ( Figs 3 A–B, G–H; 6D–G).

Description. See Platnick and Lise (2007): 4–9. Complementary description: Female (IBSP 154310). External female genital area with anterior and posterior plates sclerotized ( Figs 1H ; 4H ), sclerotization around spiracles (ess) not reaching the anterior side of anterior spiracles ( Fig. 10 A–B). Internal genitalia consisting of transverse, anteriorly directed, slightly sclerotized receptaculum (re) with concave proximal margin, and a membranous uterus externus that extends anteriorly over the receptaculum ( Figs 1I ; 4I ; 10 A–B).

Distribution. Peru, Bolivia and Brazil ( 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 2. Nyetnops guarani Platnick & Lise, male (IBSP 126553). A Left tarsus I, prolateral view. B Left pretarsus IV, retrolateral view. C Right trochanter II, ventral view. D Tarsal organ on leg IV, dorsal view. E Trichobothria on metatarsus IV, dorsal view. F Spinnerets, apical view. G Chelicera, lateral oblique view. H Prosoma, ventral view. I Labium and endites, ventral view. J Mouthparts, ventral oblique view. K Right serrula, ventral view. L Labium, ventral view. Abbreviations: aj—adesmatic joints, os—outer sides on anterior margin of endites.

FIGURE 3. Nyetnops guarani Platnick & Lise, male palp (IBSP 126553). A Left palp, prolateral view. B Left copulatory bulb, retrolateral view. C Left cymbium tip, view. D Detail of figure C, modified setae, prolateral view. E Left embolus tip, ventral view. F Left embolus tip, ventral oblique view. G Left embolus tip, dorsal view. H Same, retrolateral view. I Same, detail of tip, retrolateral view. J Right palp, prolateral view. K Detail of figure J, chemosensory setae, prolateral view. L Detail of figure J, setae, prolateral view. Abbreviations: cb—copulatory bulb, e—embolus, t—tegulum.

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 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.