Eutichurus paredesi Bonaldo & Saturnino, 2018

Bonaldo, Alexandre B., Lise, Arno A., Ramírez, Martín J. & Saturnino, Regiane, 2018, Revisiting the spider genus Eutichurus Simon, 1897 (Araneae, Eutichuridae): new species and complementary descriptions, Zootaxa 4382 (2), pp. 321-346 : 325-326

Eutichurus paredesi Bonaldo & Saturnino , new species

Figs 1 ̄3, Map 1

Type material. Male holotype (MUSM-Ent 504411) and male paratype (MUSM-Ent 511659) from Peru, Amazonas, Nueva Esperanza, Rodriguez de Mendoza Province , 6°24'27.5"S 77°27'31.4"W, 1493 m, 1.XII.2004, W. Paredes leg.

Etymology. The specific name is a patronym in honour of arachnologist Williams Paredes, collector of the types.

Diagnosis. Males of E. paredesi n. sp. resemble those of E. abiseo by the embolar base fused to the tegulum ( Figs 1 , 3; Bonaldo, 1994: figs 35¯37), but differ by the longer, filiform embolus and by the RTA excavated ( Figs 1 , 2). They also resemble those of E. madre Bonaldo by the wide, retrolaterally directed median prong of the MA ( Fig. 23 ), but are readily recognized by the embolus not articulated, without processes.

Description. Male (Holotype). Colour in ethanol: carapace dark orange, thoracic groove darker. Chelicerae, endites and labium brownish red. Sternum orange with brown margins. Legs orange. Chelicerae with 3 promarginal teeth, second largest, and 3 contiguous retromarginal teeth. Tarsi I–IV and metatarsi I–II with dense scopulae; metatarsi III–IV with sparse scopulae. Total length 10.4. Carapace 5.0 long, 3.6 wide. Eye diameters: AME 0.29, ALE 0.27, PME 0.22, PLE 0.24. Eye interdistances: AME–AME 0.26, AME–ALE 0.26, PME–PME 0.39, PME– PLE 0.09, AME–PME 0.24, ALE–PLE 0.44, clypeus AME 0.15, clypeus ALE 0.12. Legs and palp measurements: palp 5.5 (2.0, 0.7, 1.0, -, 1.8); leg I 18.7 (4.9, 1.9, 4.7, 5.2, 2.0); leg II 17.8 (4.7, 2.0, 4.4, 4.8, 1.9); leg III 13.7 (3.9, 1.7, 3.0, 3.6, 1.5); leg IV 17.8 (4.9, 1.9, 4.1, 5.2, 1.7). Leg formula I–II=IV–III. Spination: palpal femur: d 1-1-0; tibia p 1-1. Leg I femur d 1-1-0, p 0-0-1, r 0; tibia d 0, p 0, r 0, v 2-2 -2; metatarsus d 0, p 0, r 0, v 2-2 -1. II—femur d 1-1-0, p 0-d1-d1, r 0; tibia d 0, p 0, r 0, v 2-2 -2; metatarsus d 0, p 0, r 0, v 2-2 -1. III—femur d 1-1-0, p 0-d1-d1, r 0-d1-d2; tibia d 0, p 1-1, r 1-1, v 2-2 -2; metatarsus d p1r1-p1r1-p1r1, p 0-0-1, r 0-0-1, v 2-2 -1. IV—femur d 1-1-0, p 0-d1-d1, r 0-0-d1; tibia d 0, p 1-1, r 1-1, v p1-2-2; metatarsus d p1r1-p1r1-p1r1, p 0-0-1, r 0-0-1, v 2-2 -1. Palp: tibia slender, two-thirds the cymbium length; RTA short, distally wide, sub-rectangular; MA apically placed, with long median prong gently curved retrolaterally; conductor hyaline; embolus inserted basally, conical, filiform, without processes, posterior surface hyaline ( Figs 1 ̄3).

Female. Unknown.

Distribution. Northern Peru (Map 1).

Other material examined. None.

Figures

FIGURES 1¯3. Eutichurus paredesi new species. Male: 1 palp, ventral view; 2 embolus, prolateral view; 3 palp, retrolateral view.Abbreviations: aMA—apices of MA; apMA—apices of median prong of MA; MA—median apophysis.Scale bar = 0,25 mm.

FIGURES 23¯26. Eutichurus madre Bonaldo, 1994. Male: 23 palp, ventral view; 24 embolus, prolateral view; 25 palp, retrolateral view.Female:26 epigynum, dorsal view.Scale bar = 0,25 mm.