Nops farhati Prosen, 1949

Sánchez-Ruiz, Alexander & Brescovit, Antonio D., 2018, A revision of the Neotropical spider genus Nops MacLeay (Araneae: Caponiidae) with the first phylogenetic hypothesis for the Nopinae genera, Zootaxa 4427 (1), pp. 1-121 : 78-79

Nops farhati Prosen, 1949

Figure 50A‒J

Nops farhati Prosen, 1949: 321 , figs A– C. Birabén, 1954: 43, fig. 7. Male holotype from Campo Gallo, Santiago del Estero, Argentina, iii.1943, A.F. Prosen (MLP 321; examined).

Nops proseni Birabén, 1954: 43 , figs 1–6, 8–10. Male holotype from Balbuena, Salta, Argentina, 12.x.1948, A.F. Prosen ( MLP 320 ; examined). New Synonymy

Remarks. The male holotype of Nops proseni has the same conformation of bulb and embolus as the male holotype of Nops farhati ; and we were unable to discover differences in the tips of the embolus ( Fig. 50I ‒J ). Slight differences between both specimens noted by Birabén (1954) as related to color and size, could be a variation between populations separated more than 300 km.

Diagnosis. Males resemble similar congener Nops minas n. sp. by having the PLS two times longer than the PMS, and a similar straight embolus and shorter than palpal tibia ( Fig. 64B‒D ); but can be distinguished by having the posterior unpaired claws elongated and dorsally reflexed ( Fig. 5B ) and a shorter embolus, with the tip lacking the wide cut on prolateral side ( Fig. 50C‒D, G‒H ).

Description. Male (holotype MPL 321): Carapace light orange ( Fig. 50A, E ). Chelicerae, labium, coxae and legs yellowish orange. Endites and sternum orange ( Fig. 50B, F ). Abdomen light gray, dorsal pattern as in figure 6I but almost unnoticeable; lighter, almost white ventrally. Anal tubercle and spinnerets lighter. Total length 7.8. Carapace 3.6 long, 3.1 wide. Sternum 3.0 long, 2.8 wide. Leg measurements: I: 3.6; II: 3.5; III: 3.3; IV: 3.7. Posterior unpaired claws elongated and dorsally reflexed. PLS longer than PMS. Palp with embolus shorter than palpal tibia, straight ( Fig. 50C‒D, G‒H ); with wide embolar tip, and two long extensions: one ventral and one dorsal ( Fig. 50I ‒J ).

Female: unknown

Variation. Specimen from Salta (MLP 320), is smaller than the specimen from Santiago del Estero (MLP 321), and has dorsally several irregular, small dark gray spots in the proximal part, and radiant light bands from the midline in the apical part, inconspicuous due to alcohol preservation ( Fig. 50E ).

Distribution. North of Argentina ( Fig. 52A ).

Figures

FIGURE 5. A–C diagrams of tarsal claws in Nops MacLeay showing only distal part of tarsi and claws (other structures as setae, frictional hairs or basal membrane were omitted). A–B Nops guanabacoae MacLeay. C Nops agnarssoni Sánchez–Ruiz, Brescovit & Alayón. D diagram of metatarsus and tarsus I in Nops guanabacoae MacLeay showing membranous modifications of Nopinae legs (other structures as setae, frictional hairs or basal membrane were also omitted). Abbreviations: aj—adesmatic joint, ar—arolium, ca—crista, CwL—claw lever, gl—gladius, MtS –metatarsal dorsal stopper, SC—pretarsal paired claws, IC—pretarsal unpaired claw. Scale bar: 40 µm (A–B), 0.5 mm (D).

FIGURE 50. Nops farhati Prosen; A–D, I male holotype (MLP 321); E–H, J male holotype (MLP 320). A habitus, dorsal view. B habitus, ventral view. C left palp, prolateral view. D left palp, retrolateral view. E habitus, dorsal view. F habitus, ventral view. G left palp, prolateral view. H left palp, retrolateral view. Scale bars: 2 mm (A–B, E–F), 0.5 mm (C–D, G–H), 100 µm (I–J).

FIGURE 52. Nops ipojuca n. sp; A–D male (holotype); E–G female (paratype). A habitus, dorsal view. B left palp, prolateral view. C left palp, ventral view. D left palp, retrolateral view. E habitus, dorsal view. F external genital area, ventral view. G internal genitalia, dorsal view. Abbreviations: ap—anterior plate, ess—sclerotization around spiracles, go—genital opening, pp—posterior plate, re—receptaculum, ue—uterus externus. Scale bars: 2 mm (A, E), 0.5 mm (B–D, F–G).

FIGURE 64. Nops minas n. sp.; A–D male (holotype); E–G female (paratype). A habitus, dorsal view. B left palp, prolateral view. C left palp, ventral view. D left palp, retrolateral view. E habitus, dorsal view. F external genital area, ventral view. G internal genitalia, dorsal view. Abbreviations: ap—anterior plate, ess—sclerotization around spiracles, go—genital opening, pp—posterior plate, re—posterior receptaculum, ue—uterus externus.