Actinopus itacolomi, 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. 1-2: 167-172

publication ID

http://doi.org/ 10.11646/megataxa.2.1.1

publication LSID

lsid:zoobank.org:pub:D8203766-9E7B-468F-9E75-F21393A1BA3D

DOI

http://doi.org/10.5281/zenodo.5655645

persistent identifier

http://treatment.plazi.org/id/0975136A-FF2B-CEF6-FF77-F8E0DA203FFF

treatment provided by

Plazi

scientific name

Actinopus itacolomi
status

sp. nov.

Actinopus itacolomi   sp. nov.

Figs 149–153 View FIGURE 149 View FIGURE 150 View FIGURE 151 View FIGURE 152 View FIGURE 153 , Map 8 View MAP 8

Type material. Holotype male from 20° 24.618’ S 43° 30.469’ W, Parque do Itacolomi , Ouro Preto, Minas Gerais, Brazil, 10–14.i.2005, R. Bertani, C. S. Fukushima, M. P. M. Pavani & R. Martins leg. ( IBSP) GoogleMaps   . Paratypes: BRAZIL. Bahia: Chapada Diamantina, Gerais da Volta da Serra, Estrada, 1198   m, 12° 39’ 1.62” S 41° 33’ 8.69” W, 1♁, 18.ii.2008 ( IBSP) GoogleMaps   . Minas Gerais: Grão Mogol, Parque Estadual de Gr „o Mogol , 16º 33’ 11.6” S 42º 54’ 9.68” W, 1♁, 10–24.i.2014, F. Leal leg. ( UFMG 14841 View Materials ) GoogleMaps   ; leme do Prado, Estaç „o Ecológica de Acau„, Linha de pitfall 1, aceiro em área de mata secundária/Acau„ 1, 17º 7’ 56.5” S 42º 43’ 58.9” W, 1♀, 18–28.ii.2013, P. H. Martins leg ( UFMG 18773 View Materials , UFMG 18774 View Materials ) GoogleMaps   ; linha de pitfall, trilha em área de mata com afloramento de cana, próximo a lagoa/ AC3-9, 17º 8’ 0.7” S 42º 46’ 5.1” W, 1♁, 18–28.ii.2013, P. H. Martins leg. ( UFMG 18784 View Materials , UFMG 18785 View Materials ) GoogleMaps   ; linha de pitfall, trilha em área de mata com afloramento de cana, próximo a lagoa/ AC3-10, 17º 8’ 0.7” S 42º 46’ 5.1” W, 1♀, 18–28.ii.2013, P. H. Martins leg. ( UFMG 18786 View Materials ) GoogleMaps   ; sede da Estaç „o, coleta aleatória, área de mata secundária, próxima a ambiente urbano/ AC10-1, 17º 7’ 56.22” S 42º 46’ 7.98” W, 1♀, 18–28.ii.2013, P. H. Martins leg. ( UFMG 18807 View Materials ) GoogleMaps   ; 2♀, 18–28.ii.2013, P. H. Martins leg. ( UFMG 18808 View Materials ) GoogleMaps   ; três Marias , [18° 12’ S 45° 13’ W], 1♁, A. J. Mayhé-Nunes & J. M. Queiroz leg. ( IBSP, IBSP) GoogleMaps   ; 2♁, A. J. Mayhé-Nunes & J. M. Queiroz leg. ( IBSP); Diamantina, [18° 14’ S 43° 36’ W], 1♁, 01.iii.2010 ( CAD 78); são Gonçalo do Rio Preto, Parque Estadual do Rio Preto ( PERP) GoogleMaps   , [18° 9’ 15” S 43° 20’ 50” W], 1♁, 10.xi.2009, C. Rodrigues ( CAD 79); GoogleMaps   20–25.x.2010, G. Monteiro, F. Sá, W. F. Silva & J. P. L. Guadanucci leg. ( CAD 251); GoogleMaps   Gouveia, Fazenda Fagundes , 18º 25’ 56.42” S 43º 44’ 49.56” W, 1♁, 7.i.2013, P. H. Martins leg. ( UFMG 19886 View Materials ) GoogleMaps   ; Carrancas, Fazenda Chapada , [21º 29’ 23” S 44º 38’ 43” W], 1♁, 18.i.2008, S. S. P. Almeida leg. ( MNRJ 6796 View Materials ) GoogleMaps   .

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

Diagnosis. Males of Actinopus itacolomi   resemble those of A. longipalpis   ( Fig. 156 View FIGURE 156 A–C), A. tutu   ( Fig. 143 View FIGURE 143 A–C) and A. azaghal   ( Fig. 148 View FIGURE 148 A–C) by the presence of three keels in prolateral view of embolus, small total length, and inconspicuous patterns of coloration on legs and palp, when present. Differs from A. longipalpis   by the presence of embolar serrated area. They resemble those of A. tutu   by BTA inserted medialy in the prolateral tegulum. They differ from those of all those species by the point of origin of PA between PI and PAc; serrated area, along to PAc; tegulum and embolus large; swelling above PA present.

MALE (IBSP): Total length 10.12; Carapace, long 3.87; wide 4.62. Carapace rounded. Anterior eye row slightly procurved, posterior row recurved ( Fig. 149 B View FIGURE 149 ). With short and weak 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. 149 C View FIGURE 149 ). Rastellum inconspicuous than others, inverted V-shaped, hirsute, without spines apically ( Fig. 149 View FIGURE 149 E–F). Chelicerae with five denticles along Prolateral row and one along retrolateral row. Prolateral row with six megateeth and one basal tooth. Retrolateral row with seven megateeth ( Fig. 149 D View FIGURE 149 ). 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. 150 View FIGURE 150 A–B). Patellae III and IV with spines on prolaterodorsal face( Fig.150A,C View FIGURE 150 ).Tibia IV without spines on dorsal surface ( Fig. 150 D View FIGURE 150 ). Ventral pseudoscopulae occupying 50% of tarsus I, 70% of II, 100% of III and IV and 10% of metatarsus IV. Pseudoscopula of tarsi I, tarsi II and metatarsi IV 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 orangish brown, paler than other articles. Abdomen pale brown ( Fig. 149 A View FIGURE 149 ). Eyes: Diameters: PME 0.2, PLE 0.28, ALE 0.36, AME 0.4; MOQ: Length 0.88, front width 2.24, back width 2; Interdistances: PME–PME 1.2, PLE–PME 0.04, AME–AME 0.2, ALE–AME 0.6, ALE–PLE 0.44, AME–PME 0.4. Ocular area: OAL 3.25, OAW 2.5, and IF 1.75. Body: Clypeus: 0.25; Fovea: 1.87; Labium: long 1; wide 0.75; Chelicerae: long 2.12; wide 1.25; Sternum: long 3.12; wide 2.5. Abdomen: long 6.25; wide 4.12. Leg measurements: I: Fe 4.75/ Pa 2/ Ti 3.5/ Me 3.12/ Ta 2/ total 15.37. II: 4.12/ 2/ 2.62/ 3.5/ 2.12/ 14.37. III: 3.5/ 2/ 2.12/ 3.25/ 2.12/ 13. IV: 4.75/ 2.12/ 3.87/ 3.87/ 2.5/ 17.12. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-3-4, d0, p0-0-2, r0-0-1; Me v5-6-4, d0, p2-3-3, r3-4-2; ta v4-3-5, d0, p2-3-2, r0. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-2-5, d0, p0- 0-1, r0-0-1; Me v6-4-5, d0, p1-4-3, r2-2-0; ta v6-5-5, d0, p2-4-3, r0. III—Fe v0, d0, p0, r0; Pa v0, d5-11-24, p0-0-1, r0-0-2; ti v0-0-2, d1-0-14, p0-0-1, r0-0-1; Me v3-5-3, d2- 1-1, p0-1-2, r1-3-5; ta v0, d0, p0, r0-4-5; IV—Fe v0, d0, p0, r0; Pa v0, d11-11-5, p0, r0; ti v0-0-2, d0, p0, r0; Me v3-2-4, d0, p1-2-2, r0-1-0; ta v0, d0, p2-3-2, r0. Palp: PA well developed. Embolus with three keels (PAc, PI and PS). BTA developed, dorsally inserted; Prolateral tegulum with cusps along middle of width of PAc to embolar base; Point of origin of PA between PI and PAc; Embolar base wide ( Fig. 153 View FIGURE 153 A–C).

FEMALE (UFMG 18786): Total length 22.5; Carapace, long 8.66; wide 8.33. Carapace anterior part square and posterior part triangular. Anterior eye row procurved, posterior row recurved ( Fig. 151 B View FIGURE 151 ). Many short and long bristles between AME-clypeus, one long bristle between PLE–ALE, many long bristles between posterior eyes-fovea and few short bristles between lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused to each other than others ( Fig. 151 C View FIGURE 151 ). 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. 151 View FIGURE 151 E–F). Chelicerae with twelve denticles between prolateral and retrolateral row of teeth. Prolateral row with one basal denticle and five megateeth. Retrolateral row with six megateeth and two teeth between three basal megateeth ( Fig. 151 D View FIGURE 151 ). Patella III with distal crown of thorns and tibiae III with distal developed crown of thorns ( Fig. 152 View FIGURE 152 A–B). Patella IV with prolaterodorsal short spines along extension of article, these spines are more numerous on basal portion ( Fig. 152 C View FIGURE 152 ). Tibia IV without spines and with long bristles on prolaterodorsal surface ( Fig. 152 D View FIGURE 152 ). Carapace and chelicerae brown, chelicerae with one longitudinal row lighter, yellowish brown; sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi, tarsi and palp reddish brown; Abdomen pale brow ( Fig. 151 A View FIGURE 151 ). 13 labial cuspules, 98 on right maxilla and 85 on left. Eyes: Diameters: PME 0.24, PLE 0.36, ALE 0.2, AME 0.4; MOQ: Length 1.32, front width 3.84, back width 3.72; Interdistances: PME–PME 2.36, PLE–PME 0.12, AME–AME 0.36, ALE–AME 1.32, ALE–PLE 0.72, AME–PME 0.96. Ocular area: OAL 6.4, OAW 5.1, and IF 3.25. Body: Clypeus: 0.83; Fovea: 3.66; Labium: long 2; wide 1.68; Chelicerae: long 5.66; wide 3; Sternum: long 5.93; wide 5.87. Abdomen: long 12.33; wide 8.5. Leg measurements: I: Fe 7.5/ Pa 5.5/ Ti 3.5/ Me 4.66/ Ta 2.16/ total 23.33. II: 7.66/ 5.33/ 3.66/ 4.83/ 2.66/ 24.16. III: 7.5/ 6.16/ 2.83/ 5.5/ 2.16/ 24.16. IV: 10/ 6.16/ 6/ 6.33/ 2.66/ 31.16. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v2-4-4, d0, p0-4-3, r6-8-5; Me v3-2-5, d0- 0-4, p5-9-6, r5-12-9; ta v1-4-3, d0, p5-4-2, r5-3-4. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v4-4-3, d0, p0, r11-7-7; Me v3-4-5, d0, p2-6-4, r1-14-6; ta v2-4-7, d0, p6-4-2, r4- 0-2. III—Fe v0, d0, p0, r0; Pa v0, d0-0-35, p0-0-2, r0-1-9; ti v0, d1-0-23, p0-0-3, r0-13-11; Me v0-0-3, d6-9-10, p0, r0; ta v29-16-12, d0-4-5, p3-5-5, r3-7-5; IV—Fe v0, d0, p0, r0; Pa v0, d21-19-7, p0, r0; ti v0, d0, p0, r0; Me v0- 0-3, d0-0-1, p0-1-3, r0; ta v5-8-8, d0-0-3, p2-6-6, r0-0-3. Spermathecae: Represented by two seminal receptacles weakly fused to base, longer than wide, with short duct. Receptacle with one single lobe, with lateral sides longer than internal sides. Pore distribution reaching 50% of length of each receptacle; receptacle bases without pores. Lateral swelling absent ( Fig. 153 D View FIGURE 153 ).

VARIATION

FEMALES (n=5): Eyes: Diameters: PME 0.16–0.24, PLE 0.24–0.4, ALE 0.16–0.24, AME 0.28–0.4; MOQ: Length 0.92–1.32, front width 2.72–3.84, back width 2.4– 3.72; Interdistances: PME–PME 1.52 2.36, PLE–PME 0.12–0.2, AME–AME 0.2–0.36, ALE–AME 0.8–0.32, ALE–PLE 0.44–0.72, AME–PME 0.6–0.96. Ocular area : OAL 4.1–9.1, OAW 3.3–7.7, and IF 2–3.5. Body : Total length: 13.3–22.5; Carapace : long 5.6–7.5; wide 4.8–8.33; Clypeus : 0.5–0.83; Fovea : 2.2–3.66; Labium : long 1.3–2; wide 1–1.68; Chelicerae : long 3.12–5.66; wide 1.93–3; Sternum : long 3.62–5.93; wide 3.06–4.68. Abdomen : long 7.5–12.33; wide 5.2–8,5. Leg measurements: I: Fe 3–7.5/ Pa 2–5.5/ Ti 1.33–3.5/ Me 1.66–4.66/ Ta 1–2.16/ total 9–23.33. II: 1.5–7.66/ 1.16–5.33/ 1.33–3.66/ 1.83– 4.83/ 1–2.66/ 6.83–24.16. III: 3–7.5/ 2.5–6.16/ 1–2.83/ 1.83–5.5/ 0.83–2.16/ 9,16–24.16. IV: 4–10/ 2.5–6.16/ 2.33–6/ 2.5–6.33/ 1.16–2.66/ 12.5–31.16. Formula 4123   .

Distribution. BRAZIL. Minas Gerais: Ouro Preto, Três Marias, S„o Gonçalo do Rio Preto, Gr„o Mogol, Leme do Prado, Gouveia, Carrancas; Bahia: Chapada Diamantina ( Map 8 View MAP 8 ).

R

Departamento de Geologia, Universidad de Chile

IBSP

Instituto Biologico de Sao Paulo