Actinopus confusus sp. nov. Figs 42–44, Map 4 Type material. Holotype male from 9° 13’ 16” S 43° 29’ 21” W, PPBio Semiárido, Parque Nacional da Serra das Confusıes, Caracol, Piauí, Brazil, x.2006, P. R. R. Silva et al. leg. (CHNUFPI 234). Paratypes: BRAZIL. Piauí: Caracol, [9° 13’ S 43° 29’ W], Parque Nacional da Serra das Confusões, 2♂ (MPEG); Parque Nacional da Serra das Confusıes, PPBio Semiárido, 9° 13’ 16” S 43° 29’ 21” W, 1♂, x.2006, P. R. R. Silva et al. leg. (CHNUFPI 24, 27, 28, 237); 2♂, x.2006, P. R. R. Silva et al. leg. (CHNUFPI 2, 4); 4♂, x.2006, P. R. R. Silva et al. leg. (CHNUFPI 23, 244); 6♂, x.2006, P. R. R. Silva et al. leg. (CHNUFPI 243). Etymology. The specific name, a Latin adjective meaning confounded, was inspired by the type locality name, Serra das Confusıes, which stands for Confusion Mountains. Diagnosis. Males of A. confusus resemble those of A. jaboticatubas (Fig. 41 A–C) by the serrated area distal to PAc (Fig. 44 A–C); PA developed and continuous to PAc (Fig. 44 A, C); thin embolus and BTA placed medially on prolateral tegular surface (Fig. 44 A). Males differ from those of A. pinhao (Fig. 32 A–C) and A. jaboticatubas (Fig. 41 A–C) by the long PS on dorsal view (Fig. 44 B) and from all other species of the group pinhao by the short keels prolateral view and tegular region with keels, with a basal swelling above PAc in prolateral view (Fig. 44 A). MALE (CHNUFPI 234): Total length 19.37; Carapace, long 7.25; wide 7.25. Carapace rounded. Anterior eye row slightly procurved, posterior row recurved (Fig. 42 B). Without bristles between AMEclypeus. With one short bristle between ALE–ALP and without bristles between posterior eyes-fovea and lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused than others (Fig. 42 C). Rastellum protuberant, inverted V-shaped, hirsute, without spines apically (Fig. 42 E–F). Chelicerae with 14 denticles along prolateral row of teeth. Prolateral row with six megateeth. Retrolateral row with six megateeth and one denticle in middle of row (Fig. 42 D). Patella and tibia III with distal crown of well-developed thorns, on patella III interrupted in middle and on tibia III not interrupted in middle (Fig. 43 A–B). Patellae III and IV with spines on prolaterodorsal face (Fig. 43 A, C). Tibia IV without spines on dorsal surface (Fig. 43 D). Ventral pseudoscopulae occupying 50% of tarsus I, 70% of II and 100% of III and IV. Pseudoscopula of tarsi I and II with setae spaced, forming diffuse group of bristles; on tarsi III and IV, compact. Carapace, chelicerae, sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi and tarsi reddish brown; tibia of palp yellowish-brown, paler than other articles. Abdomen pale brown (Fig. 42 A). Eyes: Diameters: PME 0.20, PLE 0.28, ALE 0.44, AME 0.40; MOQ: Length 1.16, front width 3.52, back width 2.96; Interdistances: PME–PME 2.04, PLE–PME 0.12, AME–AME 0.24, ALE–AME 1.04, ALE–PLE 0.68, AME–PME 0.68. Ocular area: OAL 5, OAW 4.12, and IF 2.37. Body: Clypeus: 0.37; Fovea: 3.12; Labium: long 1.5; wide 1.25; Chelicerae: long 4.125; wide 2; Sternum: long 4.87; wide 4.87. Abdomen: long 10.12; wide 6.87. Leg measurements: I: Fe 7.75/ Pa 3.25/ Ti 4.62/ Me 5.25/ Ta 3.5/ total 24.37. II: 7.5/ 3.25/ 4.62/ 5.75/ 3.5/ 24.62. III: 5.75/ 3.25/ 3.37/ 6.62/ 3.37/ 22.37. IV: 7.62/ 3.62/ 6.25/ 7/ 3.87/ 28.37. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-5-6, d0, p0-0-1, r0; Me v6- 4-7, d0, p1-2-3 r0; ta v1-5-7, d0, p1-2-2, r0. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-4-4, d0, p0, r0-3-4; Me v4-4-3, d0, p0-2-2, r3-6-5; ta v1-4-3, d0, p2-4-4, r4-9-11. III—Fe v0, d0, p0, r0; Pa v0, d4-10-25, p0, r0-0-3; ti v0- 0-4, d1-0-19, p0-0-2, r0-0-3; Me v0-5-4, d0-0-1, p1-4-4, r1-3-8; ta v0-3-12, d0, p1-0-6, r0-9-12; IV—Fe v0, d0, p0, r0; Pa v0, d15-20-10, p0, r0; ti v0-0-2, d0, p0, r0; Me v3-4-4, d0, p3-0-3, r0; ta v0, d0, p2-8-12, r1-9-13. Palp: PA developed, embolus with three keels (PAc, PI and PS). BTA developed and placed medially on prolateral tegular surface; serrated area developed, distal to PAc and next to base of next to base of embolus; tegulum elongated and smooth, and embolar bases thinner. Tegular region with keels, with basal swelling below PAc in prolateral view (Fig. 44 A–C). Distribution: BRAZIL. Piauí: Caracol, Parque Nacional da Serra das Confusıes (Map 4).

Published as part of Miglio, Laura Tavares, Pérez-Miles, Fernando & Bonaldo, Alexandre B., 2020, Taxonomic Revision of the Spider Genus Actinopus Perty, 1833 (Araneae, Mygalomorphae, Actinopodidae), pp. 1-256 in Megataxa 2 (1) on pages 48-51, DOI: 10.11646/megataxa.2.1.1, http://zenodo.org/record/5597237