Actinopus cornelli, sp. nov.
Creators: name: Miglio, Laura Tavares
name: Pérez-Miles, Fernando
name: Bonaldo, Alexandre B.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Actinopodidae
Actinopus
Actinopus cornelli

description: Actinopus cornelli sp. nov.
Figs 60–62, 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).
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 A–C) and A. candango (Fig. 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 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). 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). Rastellum protuberant, inverted V-shaped, hirsute, without spines apically (Fig. 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). 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 A–B). Patellae III and IV with spines on prolaterodorsal face (Fig. 61 A, C). Tibia IV without spines on dorsal surface (Fig. 61 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-dark-brown; abdomen gray, with long bristles covering dorsal surface (Fig. 60 A). 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 A–C).
Distribution. BRAZIL. Rio Grande do Sul: Viam„o: Águas Claras (Map 4).
description: 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 68-70, DOI: 10.11646/megataxa.2.1.1, http://zenodo.org/record/5597237