Nops mathani Simon, 1893

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 : 87-88

Nops mathani Simon, 1893

Figure 58A‒F

Nops mathani Simon, 1893a: 307 . Female holotype from São Paulo de Olivença, Amazonas, Brazil (MNHN 6532; examined).

Remarks. Additional material from this species was not located. However, adult female holotype can be easily separate from other Nops species by the remarkable dorsal abdominal pattern.

Diagnosis. Both sexes can easily be separated from members of all the other South American species by having a dorsal abdominal pattern unique as in figure 58 A‒B, D.

Description. Male: Unknown.

Female (holotype): Carapace dark orange. Chelicerae, palps and legs orange; coxae and trochanters lighter ( Fig. 58A ). Endites, labium and sternum light orange ( Fig. 58B ). Abdomen with a dark gray longitudinal, dorsal, irregular stripe and four dark gray, irregular large spots on both laterals ( Fig. 58A, D ). Anal tubercle and spinnerets lighter than abdomen. Total length 9.4. Carapace 5.5 long, 3.8 wide. Sternum 4.3 long, 3.6 wide. Leg measurements: I: 4.0; II: 3.9; III: 3.4; IV: 4.05. Posterior unpaired claws small, as in other three‒clawed spiders ( Fig. 5C ). PLS same size as PMS ( Fig. 58C ). External genital area with weakly sclerotized anterior plate, strongly sclerotized lep and remarkable ess ( Fig. 58E ).

Distribution. Known only from the type locality in Amazonas, Brazil ( Fig. 58G ).

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 58. Nops mathani Simon, female holotype. A habitus, dorsal view. B habitus, ventral view. C spinnerets, ventral view. D habitus, lateral view. E external genitalia, ventral view. F cephalothorax, ventral view. G distribution map. Scale bars: 2 mm (A, B, D), 0.5 mm (C, E), 1 mm (F).