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 itapitocai sp. nov. Figs 79–83 , Map 5 Type material. Holotype male from [ 29° 44’ S 57° 05’ W ], Uruguaiana , Rio Grande do Sul , Brazil , 15.ii.1973 , E. Huber leg. ( MCN 3112 ). Paratypes : BRAZIL . Goiás : Jataí , [ 17° 53’ S 51° 42’ W ], Fazenda Aceiro , 1♀ , Equipe DZ leg. ( MZSP 22122 ). Espírito Santo : [ 19° 11’ S 40° 18’ W ], 2♀ 1J, 19.vi.1920 , E. Garle leg. ( MZSP 10870 ); Vila Velha , [ 20° 20’ S 40° 17’ W ], 4♀ , 17.viii.1947 , K. Imagnine leg. ( MZSP 22114 ); 6♀ , 17.viii.1947 , K. Imagnine leg. ( MZSP 22113 , 1♀ removed for SEM ). São Paulo : Tatuí , [ 23° 21’ S 47° 51’ W ], 1♂, ix.1982 , J. L. Gomes Protta ( IBSP 104405 ); Ubatuba , [ 23° 26’ S 45° 05’ W ], 11♀ 1J, 02.xii.1968 , Spreket K. Ramos leg. ( MZSP 22111 ); São Paulo , [ 23° 32’ 56” S 46° 38’ 20” W ], 1♀ , ix.1945 ( MZSP 7513 ) ; Ipiranga, [ 23° 35’ S 46° 36’W ], 1♀ , i.1926 , Spitz leg. ( MZSP 10869 ); 19.iv.1942 , J. Barroso [ MZSP 22121 ]; Horto , 1♀ , viii.1925 , Hnedeirvalbt leg. ( MZSP 5788 ); Itapetininga , [ 23° 34’ S 48° 01’ W ], 1♀ , E. Rabello leg. ( MZSP 22115 ). Paraná : Curitiba , [ 25° 25’ S 49° 16’ W ], 9♀ , ix.1946 , Goffergé leg. ( MZSP 22112 ). Rio Grande do Sul : Uruguaiana , Itapitocaí , [ 29° 47’ S 57° 03’ W ], 1♂ 2♀ , A. Dutra leg. ( IBSP 103433 ) . FIGURE 79. Actinopus itapitocai sp. nov. , male: A–F MCN 3112: A. Abdomen, dorsal; B. Carapace, dorsal; C. Sternum, ventral; D. Cheliceral teeth, ventral; E. Rastellum, dorsal; F. Rastellum, ventral. Etymology. The specific name is a noun in apposition from the provenance of one of the paratypes , from the type locality, Uruguaiana, State of Rio Grande do Sul , Brazil . Diagnosis. Males of A. itapitocai resemble those of A. vilhena ( Fig. 73 A ), A. nattereri ( Fig. 63 A ), A. itaqui ( Fig. 89 A ) and A. caxiuana ( Fig. 98 A ) by the bluishgray color on the dorsal abdomen. Males differ from those species by this pattern been reduced to a spot on anterior third ( Fig. 79 A ); they resemble those of A. vilhena ( Fig. 75 A–C), A. harveyi ( Fig. 78 A–C), A. nattereri ( Fig. 67 A–C), A. xingu ( Fig. 94 A–C) and A. utinga ( Fig. 103 A–C) by the BTA being displaced dorsally in relation to a middle longitudinal line along the prolateral tegular surface ( Fig. 83 A–B); they resemble those of A. harveyi , A. vilhena , A. itaqui ( Fig. 91 A–C), A. xingu and A. utinga by PA contiguous to PI in prolateral view. They differ from those of all other species included in the group nattereri by PS and PI reaching only 30–35% of embolus, as seen on dorsal view; PAc totally covered by PI on dorsal view; and tegulum with a depression on retrolateral surface ( Fig. 83 A–C). Females resemble those of A. ipioca ( Fig. 88 D ) by the bilobed receptacles, with the outer lobe being higher than the inner lobe and differs from those A. ipioca by the pore distribution reaching the border between the basal membrane and receptaces, and by the subquadrate receptacles ( Fig. 83 D ) FIGURE 80. Actinopus itapitocai sp. nov. , male: A–D MCN 3112: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. MALE (MCN 3112): Total length 15.25; Carapace, 6.87; wide 6.75. Carapace anterior part tapering. Anterior eye row slightly procurved, posterior row recurved ( Fig. 79 B ). With few, short and sparse bristles between AMEclypeus, between ALE–ALP, between posterior eyesfovea and lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused than others ( Fig. 79 C ). Rastellum protuberant, inverted V-shaped, hirsute, without spines apically ( Fig. 79 E–F). Chelicerae with 16 denticles along prolateral row of teeth. Prolateral row with six megateeth. Retrolateral row with six megateeth and three denticles, one the medial teeth and two between the two basal megateeth ( Fig. 79 D ). Patella and tibia III with distal crown of well-developed thorns, not interrupted in middle ( Fig. 80 A–B). Patellae III and IV with spines on prolaterodorsal face ( Fig. 80 A, B ). Tibia IV without spines on dorsal surface ( Fig. 80 D ). Ventral pseudoscopulae occupying 40% 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 pale brown with an anterior bluish abdomen dorsally ( Fig. 79 A ). Eyes: Diameters: PME 0.24, PLE 0.44, ALE 0.52, AME 0.32; MOQ: Length 1.24, front width 3.56, back width 3.12; Interdistances: PME–PME 1.92, PLE–PME 0.12, AME–AME 0.24, ALE–AME 1.04, ALE–PLE 0.56, AME–PME 0.72. Ocular area: OAL 5.25, OAW 4, and IF 2.62. Body: Clypeus: 0.37; Fovea: 3; Labium: long 1.75; wide 1.5; Chelicerae: long 3.75; wide 2; Sternum: long 4.75; wide 4.12. Abdomen: long 7.75; wide 6.12. Leg measurements: I: Fe 6.12/ Pa 3/ Ti 3.62/ Me 4.25/ Ta 2.5/ total 19.5. II: 5.75/ 3/ 3.25/ 4.62/ 2.75/ 19.37. III: 4.87/ 3/ 2.25/ 4.75/ 3/ 17.87. IV: 6.75/ 3.25/ 5.37/ 6.37/ 3.5/ 25.25. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0, d0, p0, r0; Me v0-0-4, d0, p0-0-4, r0; ta v0, d0, p0-0-4, r0-0-4. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0, d0, p0, r0; Me v0, d0, p0, r1- 3-3; ta v0, d0, p0-2-2, r0-3-6. III—Fe v0, d0, p0, r0; Pa v0, d10-15-23, p0-0-1, r0-0-2; ti v0-0-3, d1-0-13, p0-0-2, r0-1-4; Me v0-1-4, d1-2-4, p0, r1-2-3; ta v0, d0, p0-2- 3, r0-3-8; IV—Fe v0, d0, p0, r0; Pa v0, d18-12-6, p1- 1-3, r0; ti v0-0-1, d0, p0, r0; Me v0-1-5, d0, p2-4-3, r0; ta v0, d0, p1-8-7, r1-3-0. Palp: PA developed; embolus thin, flattened, with three keels (PAc, PI and PS) equally spaced and without overlapping. serrated area absent. PA contiguous to PI in prolateral view. BTA well developed, displaced dorsally in relation to middle longitudinal line along prolateral tegular surface ( Fig. 83 A–C). FIGURE 81. Actinopus itapitocai sp. nov. , female: A–F MZSP 22113: A. Abdomen, dorsal; B. Carapace, dorsal; C. Sternum, ventral; D. Cheliceral teeth, ventral; E. Rastellum, dorsal; F. Rastellum, ventral. FIGURE 82. Actinopus itapitocai sp. nov. , female: A–D MZSP 22113: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. FEMALE (MZSP 22113): Total length 21.62; Carapace, long 8; wide 7.87. Carapace anterior part square and posterior part triangular. Anterior eye row procurved, posterior row slightly recurved ( Fig. 81 B ). Many short and long bristles between AME-clypeus, one long bristle between PLE–ALE, short and long bristles between posterior eyes-fovea and short bristles between lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, all sigilla very fused to each other ( Fig. 81 C ). Rastellum protuberant, subquadrate, hirsute, with a row of short spines on the edge of rastellum and many short spines over dorsal rastellum ( Fig. 81 E–F). Chelicerae with 8 denticles along prolateral row of teeth. Prolateral row with five megateeth and one tooth, basal to megateeth. Retrolateral row with seven megateeth and two teeth between three basal megateeth ( Fig. 81 D ). Patella III with distal interrupted crown of thorns and tibiae III with distal developed crown of thorns ( Fig. 82 A–B). Patella IV with prolaterodorsal short spines along extension of article ( Fig. 82 C ). Tibia IV without spines and with long bristles along prolaterodorsal surface ( Fig. 82 D ). Carapace, chelicerae, sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi, tarsi and palp reddish brown; Abdomen pale brown with big basal spot of long bristles dorsally ( Fig. 81 A ). 29 labial cuspules, 166 on right maxilla and 189 on left. Eyes: Diameters: PME 0.28, PLE 0.4, ALE 0.32, AME 0.16; MOQ: Length 1.16, front width 3.84, back width 3.48; Interdistances: PME–PME 1.88, PLE–PME 0.2, AME–AME 0.16, ALE–AME 1.4, ALE–PLE 0.68, AME–PME 0.8. Ocular area: OAL 6.5, OAW 4.87, and IF 2.75. Body: Clypeus: 0.37; Fovea: 3.87; Labium: long 1.87; wide 1.75; Chelicerae: long 3.12; wide 2.75; Sternum: long 5.62; wide 5. Abdomen: long 12.12; wide 9.25. Leg measurements: I: Fe 3.62/ Pa 2.5/ Ti 2/ Me 2.5/ Ta 1.5/ total 12.12. II: 2.62/ 3/ 1.75/ 2.5/ 1.12/ 11. III: 4.12/ 3.37/ 1.5/ 2.75/ 1.12/ 12.87. IV: 5.25/ 3.62/ 3.25/ 2.5/ 0.87/ 15.5. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-0-1, d0, p0-5-4, r10-13-7; Me v0-1-2, d0, p9-10-10, r12-9-7; ta v1-2-2, d0, p4-6-3, r7-6-7. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0, d0, p0, r29-28-18; Me v0, d0, p4-5-4, r14-12-3; ta v0- 0-3, d0, p3-4-4, r3-2-4. III—Fe v0, d0, p0, r0; Pa v0, d0-6- 48, p0-0-4, r0-2-15; ti v0, d1-0-19, p4-0-4, r10-7-15; Me v0-0-3, d10-7-3, p4-3-3, r9-10-13; ta v20-25-12, d0-0-4, p0-2-5, r5-12-6; IV—Fe v0, d0, p0, r0; Pa v0, d24-19-8, p0, r0; ti v0, d0, p0, r0; Me v0-0-3, d0-0-1, p0-1-6, r0; ta v13-16-18, d0, p3-10-5, r0-0-6. Spermathecae: Seminal receptacles slightly asymmetrical, as long as wide, with short ducts. Both receptacles bilobed, with outer lobe higher than inner lobe. Pore distribution reaching border between basal membrane and receptacles ( Fig. 83 D ). FIGURE 83. Actinopus itapitocai sp. nov. , male: A–C MCN 3112: A. Copulatory bulb, prolateral; B. Copulatory bulb, dorsal; C. Copulatory bulb, retrolateral. PA- Paraembolic apophysis; BTA -Basal Tegular Apophysis; PAc -Prolateral Accessory keel; PI - Prolateral Inferior keel; PS -Prolateral Superior keel; Arrows: Serrated area. Paratype, female: D MZSP 22113: D. Spermathecae, dorsal view. Scales lines: 1 mm. Distribution. BRAZIL . Espírito Santo : Vila Velha. Minas Gerais : Januária. Goiás : Jataí. S„o Paulo: Tatuí, Ubatuba, S„o Paulo, and Itapetininga. Rio Grande do Sul : Uruguaiana. Paraná : Curitiba ( Map 5 ). Material examined (burned in fire). Minas Gerais : Januária , [ 15° 20’ S 44° 14’ W ], Riacho da Cruz , 1♂ 1♀ 1J, José Blaser leg. ( IBSP 103434 ) .