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 lomalinda sp. nov. Figs 182–186 , Map 11 Type material. Holotype male from 03° 18’ N 73° 22’ W , 300m , Lomalinda , Puerto Lleras , Meta , Colômbia , B. T . Carrol leg. ( CASENT 9046026 ) . Paratypes : COLOMBIA : Meta : Puerto Lleras , Lomalinda , 300m , 03° 18’ N 73° 22’ W , 1 ♂, iv.1987 , B. T . Carrol leg. ( CASENT 9020955 ); 1♂2J , 15.iv.1986 , B. T . Carrol leg. ( CASENT 9048526 ); 2 ♂, ii.1987 , B. T . Carrol leg. ( CASENT 9020954 ) ; iii.1987 , B. T . Carrol leg. ( CASENT 9046028 ); 4♂ 1♀ , 17.iii.1984 , B. T . Carrol leg ( CASENT 9020953 ); 8♂4J , 10.ii.1987 , B. T . Carrol leg. ( CASENT 9020959 ) . BRITISH GUIANA : Potaro River , Tumatumari , [ 05° 15’ N 59° 08’ W ], 1♀ , 29.vi.1927 ( AMNH ); Bartica District : Cuyuni-Mazaruni (Region 7), Kartabo Village , [ 06° 27’ N 60° 12’ W ], 1♂ 1924 ( AMNH ) . FIGURE 182. Actinopus lomalinda sp. nov. , holotype, male: A–F CASENT 9046026: 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 type locality name. Diagnosis. Males of Actinopus lomalinda differ from all other species of the genus by the apical tegular process of 3/4 the size of the embolus and tegulum without prolaterals apophysis in dorsal view. A. robustus ( Fig. 181 A–C), A. palmar ( Fig. 189 A–C), A. cucutaensis ( Fig. 176 A–C) and A. guajara ( Fig. 192 A–C) shared with A. lomalinda those ATP, but only in A. cucutaensis , A. lomalinda and A. guajara those ATP appears separated and parallel to the embolus in prolateral view. They differ from those of A. cucutaensis by the ATP angle of insertion on tegulum and in the presence of a small-serrated area, which occupies only 20% of the embolus, in dorsal view ( Fig. 186 A–C). Females differ from all other species, except A. obidos ( Fig. 26 D ) by a spermathecae with a unique receptacle. Differs from A. obidos by absence of swelling on external lateral of receptacle ( Fig. 186 D ). FIGURE 183. Actinopus lomalinda sp. nov. , holotype, male: A–D CASENT 9046026: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. MALE (CASENT 9046026): Total length 17.38; Carapace, long 6.12; wide 5.62. Carapace anterior part tapering. Anterior eye row slightly procurved, posterior row recurved ( Fig. 182 B ). With five short bristles between AME-clypeus. Without bristles between ALE–ALP and many short and weak bristles between posterior eyesfovea and lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused than others ( Fig. 182 C ). Rastellum protuberant, inverted V-shaped, hirsute, without spines apically ( Fig. 182 E–F). Chelicerae with nine denticles along prolateral row of teeth. Prolateral row with six megateeth. Retrolateral row with five megateeth and one denticle between the three distal and two basal megateeth ( Fig. 182 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. 183 A–B). Patellae III and IV with spines on prolaterodorsal face ( Fig. 183 A, C ). Tibia IV without spines on prolateral surface ( Fig. 183 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; In tarsi III and IV, compact. Carapace, chelicerae, sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi and tarsi reddish brown; Abdomen pale gray ( Fig. 182 A ). Eyes: Diameters: PME 0.2, PLE 0.24, ALE 0.44, AME 0.32; MOQ: Length 1.04, front width 2.4, back width 2.28; Interdistances: PME–PME 1.44, PLE–PME 0.08, AME–AME 0.16, ALE–AME 0.48, ALE–PLE 0.48, AME–PME 0.44. Ocular area: OAL 4, OAW 3.5, and IF 1.75. Body: Clypeus: 0.25; Fovea: 2.37; Labium: long 1.5; wide 1; Chelicerae: long 2.62; wide 1.75; Sternum: long 3.75; wide 3. Abdomen: long 8.5; wide 6.25. Leg measurements: I: Fe 6.75/ Pa 2.87/ Ti 4.25/ Me 4.75/ Ta 2.62/ total 21.25. II: 6.5/ 2.75/ 4/ 5/ 2.5/ 20.75. III: 5/ 2.87/ 3.25/ 5.62/ 3/ 19.75. IV: 7/ 3.12/ 5.62/ 6.25/ 3.12/ 25.12. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v1-4-4, d0, p0-0-1, r0-0-2; Me v1-4-4, d0, p0-3-2, r1-2-2; ta v1-2-2, d0, p1-2-2, r0-2-3. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-4-3, d0, p0, r0-5-4; Me v4-4-3, d0, p1-2-1, r0-2-3; ta v1-2-3, d0, p3-4-6, r1-3-6. III—Fe v0, d0, p0, r0; Pa v0, d7-18-25, p0-0-2, r0-0-4; ti v0-0-6, d1-0-16, p0-0-2, r0-2-4; Me v3-5-6, d0-1-2, p1-2- 3, r1-2-6; ta v0, d0, p0-3-4, r2-12-4; IV—Fe v0, d0, p0, r0; Pa v0, d28-8-5, p0, r0; ti v0-0-2, d0, p0, r0; Me v2-4- 3, d0, p0-2-3, r0-0-1; ta v0, d0, p1-6-7, r1-6-6. Palp: PA well developed. Embolus without keels. ATP nearly 3/4 the size of the embolus. BTA poorly developed; prolateral tegulum with three cusps next the embolus base, embolus inserted at 20° angle on the basal portion of the copulatory bulb; embolar bases thin ( Figs. 186 A–C). FIGURE 184. Actinopus lomalinda sp. nov. , paratype, female: A–F CASENT 9020953: A. Abdomen, dorsal; B. Carapace, dorsal; C. Sternum, ventral; D. Cheliceral teeth, ventral; E. Rastellum, dorsal; F. Rastellum, ventral. FEMALE (CASENT 9020953): Total length 19.5; Carapace, long 7.25; wide 6.87. Carapace anterior part square and posterior part triangular. Anterior eye row procurved, posterior row slightly recurved ( Fig. 184 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. 184 C ). Rastellum protuberant, subquadrate, hirsute, with a row of short spines on the edge of rastellum and o lot of short spines covering the dorsal rastellum ( Fig. 184 E–F). Chelicerae with 13 denticles along prolateral row of teeth. Prolateral row with eight megateeth and one tooth, basal to megateeth. Retrolateral row with five megateeth and two teeth between three basal megateeth ( Fig. 184 D ). Patella III with distal interrupted crown of thorns and tibiae III with distal developed crown of thorns ( Fig. 185 A–B). Patella IV with prolaterodorsal short spines along extension of article ( Fig. 185 C ). Tibia IV without spines ( Fig. 185 D ). Carapace, chelicerae, sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi, tarsi and palp reddish brown; Abdomen pale brown with a big basal portion of unpigmented area in dorsal view ( Fig. 184 A ). 11 labial cuspules, 87 on right maxilla and 89 on left. Eyes: Diameters: PME 0.24, PLE 0.36, ALE 0.4, AME 0.24; MOQ: Length 1.2, front width 3.16, back width 3.12; Interdistances: PME–PME 1.92, PLE–PME 0.16, AME–AME 0.36, ALE–AME 0.92, ALE–PLE 0.6, AME–PME 0.72. Ocular area: OAL 5.75, OAW 3.87, and IF 2.5. Body: Clypeus: 0.37; Fovea: 3.12; Labium: long 1.62; wide 1.37; Chelicerae: long 3.87; wide 2.75; Sternum: long 4.75; wide 3.75. Abdomen: long 11; wide 6.87. Leg measurements: I: Fe 3.37/ Pa 2.75/ Ti 1.75/ Me 1.75/ Ta 0.87/ total 10.5. II: 3.5/ 2.75/ 1.87/ 1.87/ 0.87/ 10.87. III: 3.5/ 2.87/ 1.5/ 1.75/ 0.87/ 10.5. IV: 4.25/ 3.25/ 2.87/ 3/ 1/ 14.37. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-1-1, d0, p1-1-4, r6-7-11; Me v2-1-2, d0, p4-4-3, r6-9-4; ta v0-0-2, d0, p3-4-2, r5- 3-2. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v1-4-1, d0, p0, r17-22-26; Me v2-1-3, d0, p4-5-4, r5-8-6; ta v0-2-3, d0, p3-4-4, r3-0-0. III—Fe v0, d0, p0, r0; Pa v0, d0-0-30, p0-0-6, r0-1-26; ti v0, d1-0-15, p0-0-2, r8-14-13; Me v0- 0-6, d10-7-3, p0, r9-10-13; ta v20-21-11, d0-0-4, p0-0-4, r5-12-6; IV—Fe v0, d0, p0, r0; Pa v0, d14-14-7, p0, r0; ti v0, d0, p0, r0; Me v0-0-3, d0, p0-1-3, r0; ta v12-16- 14, d0, p0-7-10, r0-0-4. Spermathecae: Represented by a single bilobed seminal receptacle strongly fused to base, longer than wide, with short duct. Left lobe in dorsal view thinner than right lobe. Pore field reaching base medially; basal lateral areas of receptacle devoid of pores. Lateral swelling absent ( Fig. 186 D ). FIGURE 185. Actinopus lomalinda sp. nov. , paratype, female: A–D CASENT 9020953: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. FIGURE 186. Actinopus lomalinda sp. nov. , male: A–C CASENT 9046026: A. Copulatory bulb, prolateral; B. Copulatory bulb, dorsal; C. Copulatory bulb, retrolateral. PA- Paraembolic apophysis; BTA -Basal Tegular Apophysis; ATP -Apical Tegular Process; Arrows: Serrated Area; Rectangle: Cusps on retrolateropical embolus. Paratype, female: D. CASENT 9020953: D. Spermathecae, dorsal view. Scale line: Male: 1 mm, female: 0.5 mm. Distribution. COLOMBIA . Meta : Puerto Lleras. BRITISH GUIANA . Tumatumaru; and Bartica District: Cuyuni-Mazaruni ( Map 11 ).