Actinopus cornelli, Miglio, Laura Tavares, Pérez-Miles, Fernando & Bonaldo, Alexandre B., 2020

Miglio, Laura Tavares, Pérez-Miles, Fernando & Bonaldo, Alexandre B., 2020, Taxonomic Revision of the Spider Genus Actinopus Perty, 1833 (Araneae, Mygalomorphae, Actinopodidae), Megataxa 2 (1), pp. 1-256 : 68-70

publication ID	https://doi.org/ 10.11646/megataxa.2.1.1
DOI	https://doi.org/10.5281/zenodo.5655579
persistent identifier	https://treatment.plazi.org/id/0975136A-FFCE-CE18-FCD5-FF4EDAD43A0E
treatment provided by	Plazi
scientific name	Actinopus cornelli
status	sp. nov.

Treatment

Actinopus cornelli View in CoL sp. nov.

Figs 60–62 View FIGURE 60 View FIGURE 61 View FIGURE 62 , Map 4 View MAP 4

Type material. Holotype male from [50° 53’ 53” S 30° 08’ 08” W], Águas Claras , Viam „o, Rio Grande do Sul, Brazil, 18.iv.1993, F. Rodolpho leg. ( MCN 23400). GoogleMaps

Etymology. The specific name is a patronym honoring musician Chris Cornell, one of the founders of grunge music.

Diagnosis. The male resembles those of A. pampulha ( Fig. 49 View FIGURE 49 A–C) and A. candango ( Fig. 54 View FIGURE 54 A–C) by the wide tegulum and short, flattened embolus. The male differs from those of A. candango by the short keels on prolateral tegulum, with PS and PI not reaching the middle of the prolateral tegular surface. It differs from those of all other species of the group pinhao by the long PAc, reaching the embolar apex, and median fold of tegular reservoir with wrinkled edges in prolateral view ( Fig. 62 View FIGURE 62 A–C).

MALE (MCN 23400): Total length 13.5; Carapace, long 6.25; wide 6.63. Carapace anterior part tapering and posterior part tapering. Anterior eye row slightly procurved, posterior row recurved ( Fig. 60 B View FIGURE 60 ). With few short bristles between AME-clypeus, between ALE–ALP, between posterior eyes-fovea and lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused than others ( Fig. 60 C View FIGURE 60 ). Rastellum protuberant, inverted V-shaped, hirsute, without spines apically ( Fig. 60 View FIGURE 60 E–F). Chelicerae with 19 denticles along prolateral row of teeth. Prolateral row with five megateeth. Retrolateral row with six megateeth and five denticles between those megateeth ( Fig. 60 D View FIGURE 60 ). 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. 61 View FIGURE 61 A–B). Patellae III and IV with spines on prolaterodorsal face ( Fig. 61 A, C View FIGURE 61 ). Tibia IV without spines on dorsal surface ( Fig. 61 D View FIGURE 61 ). 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-dark-brown; abdomen gray, with long bristles covering dorsal surface ( Fig. 60 A View FIGURE 60 ). Eyes: Diameters: PME 0.28, PLE 0.4, ALE 0.60, AME 0.28; MOQ: Length 0.88, front width 3.24, back width 3.08; Interdistances: PME–PME 1.56, PLE–PME 0.20, AME–AME 0.32, ALE–AME 0.88, ALE–PLE 1.08, AME–PME 0.48. Ocular area: OAL 3.37, OAW 4.75, and IF 3.25. Body: Clypeus: 0.37; Fovea: 2.87; Labium: long 1.5; wide 1.37; Chelicerae: long 3.5; wide 2; Sternum: long 4.12; wide 4. Abdomen: long 6.62; wide 5.25. Leg measurements: I: Fe 5.87/ Pa 2.5/ Ti 2.75/ Me 4.75/ Ta 5.25/ total 21.12. II: 5.75/ 2.75/ 3.5/ 4.75/ 2.87/ 19.62. III: 5/ 2.75/ 2.62/ 5.5/ 3.25/ 19.12. IV: 6.25/ 3.12/ 4.5/ 5.75/ 3.5/ 23.12. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v1-4-5, d0, p1-2-3, r0-0-3; Me v2-3-4, d0, p0-3-2, r1-2-2; ta v4-4-9, d0, p1-2-5, r2-5-7. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-3-3, d0, p0, r1-2-4; Me v1-2-5, d0, p2-5- 8, r0-2-3; ta v1-2-3, d0, p6-9-13, r3-5-8. III—Fe v0, d0, p0, r0; Pa v0-1-4, d4-8-31, p0-0-1, r1-3-4; ti v0-0-4, d1-0- 17, p0-0-1, r0-1-4; Me v4-5-4, d1-0-16, p3-5-6, r0-2-4; ta v0, d0, p3-2-7, r0-6-4; IV—Fe v0, d0, p0, r0; Pa v0, d17- 20-6, p0, r0; ti v0, d0, p0-0-2, r0; Me v0, d0-0-1, p1-4-5, r0; ta v0, d0, p1-5-6, r0. Palp: PA developed, embolus with three keels (PAc, PI and PS). BTA well-developed and placed medially on prolateral tegular surface; serrated area developed, positioned distal to prolateral accessory keel and next to base of embolus, represented by many cusps; wide and short tegulum and embolar base flattened. PAc length reaching the embolar apex and median fold of tegular reservoir with wrinkled edges in prolateral view ( Fig. 62 View FIGURE 62 A–C).