Actinopus buritiensis, 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 : 34-37

publication ID	https://doi.org/ 10.11646/megataxa.2.1.1
DOI	https://doi.org/10.5281/zenodo.5655559
persistent identifier	https://treatment.plazi.org/id/0975136A-FFAC-CE79-FCD5-F88BDAE93A57
treatment provided by	Plazi
scientific name	Actinopus buritiensis
status	sp. nov.

Treatment

Actinopus buritiensis View in CoL sp. nov.

Figs 27–29 View FIGURE 27 View FIGURE 28 View FIGURE 29 , Map 3 View MAP 3

Type material. Holotype male from [55º 50’ S 15º 23’ W], Buriti , Chapada dos Guimar „es, Mato Grosso, Brazil, xii.1992, L. F. Silva leg. ( MCTP 2940 View Materials ). GoogleMaps

Etymology. The specific name is a noun in apposition from the type locality name.

Diagnosis. The male of A. buritiensis , as in A. obidos ( Fig. 26 View FIGURE 26 A–C), presents the BTA positioned medially on the tegular prolateral surface, and PA inconspicuous in prolateral view. It resembles those of other species with only two embolar keels (PS and PI) by the small serrated area along the embolus, with few cusps; tegulum thin and proximal third of the embolus narrow and long. It differs from males of A. obidos by the thinner and elongated tegulum and by the well-developed BTA ( Fig. 29 View FIGURE 29 A–C).

MALE ( MCTP 2940 View Materials ): Note. The holotype lacks both legs II.

Total length 9; Carapace, long 5.37; wide 5.25. Carapace anterior part tapering. Eyes. Anterior row slightly procurved, posterior row recurved ( Fig. 27 B View FIGURE 27 ). With many short bristles between AME-clypeus, one bristle between ALE–ALP and many short and weak bristles between posterior eyes-fovea and lateral eyesedge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused than others ( Fig. 27 C View FIGURE 27 ). Rastellum protuberant, inverted V-shaped, hirsute, with row of strong spines apically ( Fig. 27 View FIGURE 27 E–F). Chelicerae with 14 denticles along prolateral row of teeth. Prolateral row with five megateeth. Retrolateral row with six megateeth and two denticles, one between three distal and four distal and other between two basal megateeth ( Fig. 27 D View FIGURE 27 ). Patella and tibia III with distal crown of welldeveloped thorns, not interrupted in middle ( Fig. 28 View FIGURE 28 A–B). Patellae III and IV with spines on prolaterodorsal face ( Fig. 28 A, C View FIGURE 28 ). Tibia IV without spines on dorsal surface ( Fig. 28 D View FIGURE 28 ). Ventral pseudoscopulae occupying 40% of tarsi I and 100% of III and IV. Pseudoscopula of tarsi I 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 paler than other articles; Abdomen gray ( Fig. 27 A View FIGURE 27 ). Eyes: Diameters: PME 0.24, PLE 0.24, ALE 0.32, AME 0.44; MOQ: Length 0.84, front width 2.56, back width 2.44; Interdistances: PME–PME 1.52, PLE–PME 0.12, AME–AME 0.12, ALE–AME 0.6, ALE–PLE 0.32, AME–PME 0.44. Ocular area: OAL 3.87, OAW 3, and IF 2.25. Body: Clypeus: 0.12; Fovea: 2.25; Labium: long 1.25; wide 1; Chelicerae: long 2.25; wide 1.62; Sternum: long 3.5; wide 3.12. Abdomen: long 4.12; wide 2.75. Leg measurements: I: Fe 4.62/ Pa 2.37/ Ti 3.5/ Me 4/ Ta 2.25/ total 16.75. III: 4/ 2.37/ 2.5/ 3.87/ 2.75/ 15.5. IV: 5.62/ 2.37/ 4.75/ 4.62/ 3.12/ 20.5. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v1-1-8, d0, p0-0-2, r0; Me v7-7-2, d0, p3-3-3, r1-1-1; ta v4-3-3, d0, p2-2-2, r0-1-2. III—Fe v0, d0, p0, r0; Pa v0, d7-9-25, p1-0-20, r0-0-2; ti v0, d0, p0-1-2, r0-1-3; Me v1- 2-4, d0, p1-0-2, r0-2-4; ta v0, d0, p0-2-4, r0-4-4. IV—Fe v0, d0, p0, r0; Pa v0, d12-8-9, p0, r0; ti v0, d0, p0-1-0, r0; Me v0-1-3, d0-0-1, p1-2-7, r0; ta v0, d0, p1-2-7, r0-2- 6. Palp: poorly developed PA poorly developed, embolus with two keels (PI and PS). Basal surface of tegulum smooth. BTA small in prolateral view and in the middle of tegulum width; prolateral tegulum with two denticles next PA and three denticles next to base of next to base of embolus; embolar bases thinner ( Fig. 29 View FIGURE 29 A–C).