Taxonomic Revision of the Spider Genus Actinopus Perty, 1833 (Araneae, Mygalomorphae, Actinopodidae) Author Miglio, Laura Tavares 0000-0002-9101-8657 Museu Paraense Emílio Goeldi, Coordenação de Zoologia, Laboratório de Aracnologia, Av. Perimetral, 1901, Terra Firme, Cep: 66077 - 830, Belém, Pará, Brazil. https: // orcid. org / 0000 - 0002 - 9101 - 8657, lauramiglio@gmail.com Author Pérez-Miles, Fernando 0000-0002-4367-6276 Facultad de Ciencias, Sección Entomología, Iguá 4225, 11400, Montevideo, Uruguay. ® myga @ fcien. edu. uy, https: // orcid. org / 0000 - 0002 - 4367 - 6276 myga@fcien.edu.uy Author Bonaldo, Alexandre B. 0000-0002-9101-8657 Museu Paraense Emílio Goeldi, Coordenação de Zoologia, Laboratório de Aracnologia, Av. Perimetral, 1901, Terra Firme, Cep: 66077 - 830, Belém, Pará, Brazil. https: // orcid. org / 0000 - 0002 - 9101 - 8657, bonaldo@museu-goeldi.br text Megataxa 2020 2020-10-09 2 1 1 256 journal article 3667 10.11646/megataxa.2.1.1 f7793976-e4e9-4562-a9cd-eda910d77fa0 2703-3090 5597237 D8203766-9E7B-468F-9E75-F21393A1BA3D Actinopus utinga sp. nov. Figs 101–103 , Map 5 Type material. Holotype male from 1° 25’ 29.38” S 48° 26’ 16.86” W , Parque Ambiental de Belém (Utinga), Belém , Pará , Brazil , ii.2010 , G. H. F. Azevedo et al. leg. ( UFMG 9918 ). Etymology. The specific name is a noun in apposition from the type locality name, Utinga. Diagnosis. Males of A. utinga resemble those of A. nattereri ( Fig. 67 A–C), A. vilhena ( Fig. 75 A–C), A. harveyi ( Fig. 78 A–C), A. itapitocai ( Fig. 83 A–C), and A. xingu ( Fig. 94 A–C) by the BTA displaced dorsally on the prolateral tegular surface ( Fig. 103 A ); they resemble those of A. rufipes ( Fig. 72 A–C), A. nattereri ( Fig. 88 A–C), A. itaqui ( Fig. 91 A–C), A. mesa ( Fig. 97 A–C) and A. caxiuana ( Fig. 100 A–C) by the well-developed PA, rebordered. They differ from those of other species in the group nattereri by the palpal tibia and cymbium being paler than other articles; the PI prominent, almost reaching the border of embolus on dorsal view, and longer than other keels ( Fig. 103 A–C). FIGURE 101. Actinopus utinga sp. nov. , male: A–F UFMG 9918: A. Abdomen, dorsal; B. Carapace, dorsal; C. Sternum, ventral; D. Cheliceral teeth, ventral; E. Rastellum, dorsal; F. Rastellum, ventral. MALE (UFMG 9918): Total length 11.87; Carapace, long 5.37; wide 5.12. Carapace rounded. Anterior eye row slightly procurved, posterior row recurved ( Fig. 101 B ). With row of short bristles on clypeus border. Without bristles between ALE–ALP and many short and weak 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. 101 C ). Rastellum protuberant, inverted Vshaped, hirsute, without spines apically ( Fig. 101 E–F). Chelicerae with eight denticles along prolateral row of teeth. Prolateral row with six megateeth. Retrolateral row with five megateeth ( Fig. 101 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 and recurved ( Fig. 102 A–B). Patellae III and IV with spines on prolaterodorsal face ( Fig. 102 A, C ). Tibia IV without spines on dorsal surface ( Fig. 102 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 dark brown; tibia of palp and cymbium paler than other articles. Abdomen gray ( Fig. 101 A ). Eyes: Diameters: PME 0.16, PLE 0.24, ALE 0.4, AME 0.32; MOQ: Length 1, front width 2.52, back width 2.36; Interdistances: PME–PME 1.48, PLE–PME 0.2, AME–AME 0.2, ALE–AME 0.64, ALE–PLE 0.28, AME–PME 0.48. Ocular area: OAL 3.5, OAW 3.12, and IF 2.25. Body: Clypeus: 0.12; Fovea: 2; Labium: long 1.25; wide 1; Chelicerae: long 3.25; wide 1.62; Sternum: long 3.62; wide 3. Abdomen: long 6; wide 4.25. Leg measurements: I: Fe 5.37/ Pa 2.12/ Ti 3.25/ Me 4.25/ Ta 2.25/ total 17.25. II: 5/ 2.25/ 2.5/ 4/ 2.25/ 16. III: 3.62/ 2.37/ 2.25/ 3.87/ 2.37/ 14.5. IV: 4.62/ 2.5/ 4.12/ 4.25/ 2.62/ 18.12. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-4- 6, d0, p0, r0; Me v3-2-3, d0, p2-2-3, r3-5-4; ta v0-2-1, d0, p1-2-2, r2-2-6. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-3-3, d0, p0, r1-7-7; Me v2-2-3, d0, p1-2-2, r1-5-5; ta v0-1-3, d0, p2-3-2, r1-2-5. III—Fe v0, d0, p0, r0; Pa v0, d3-6-18, p2-2-4, r0-0-2; ti v0-0-3, d1-0-13, p0-0-3, r0-0-3; Me v1-1-2, d0-0-2, p1-0-0, r1-3-5; ta v0, d0, p0-0-2, r0-2- 2; IV—Fe v0, d0, p0, r0; Pa v0, d17-11-4, p0, r0; ti v0-0- 2, d0, p0, r0; Me v0-1-2, d0-0-1, p0-1-0, r0-0-2; ta v0, d0, p0-4-7, r0-0-5. Palp: PA well-developed and rebordered, continuous to PI. Embolus with three keels (PAc, PI and PS). BTA developed, displaced dorsally in relation to middle longitudinal line along prolateral tegular surface; serrated area absent; embolar bases thinner, elongated ( Fig. 103 A–C). FIGURE 102. Actinopus utinga sp. nov. , male: A–D UFMG 9918: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. Distribution. BRAZIL . Pará : Belém ( Map 5 ).