Actinopus fractus Mello-Leitão, 1920

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 : 26-29

Actinopus fractus Mello-Leitão, 1920

Figs 19–21 , Map 3

Actinopus fractus Mello-Leitão, 1920: 58 ( holotype ♂, [ 20° 31’ 59.9982” S 47° 23’ 59.9994” W], Franca, S„o Paulo , Brazil, MZSP 323 , examined); Mello-Leit „o, 1923: 21; World Spider Catalog, 2020.

Diagnosis. Males of A. fractus differ from those of other species belonging to the group fractus , by the BTA displaced dorsally in relation to a middle longitudinal line along prolateral tegular surface; and by the more developed PA ( Fig. 21 A–C).

MALE (IBSP 114535): Total length 15.75; Carapace, long 7.47; wide 7.92. Carapace anterior part rounded. Eyes. Anterior eye row slightly procurved, posterior row recurved ( Fig. 19 B ). Few short bristles between AMEclypeus and posterior eyes. Sternum with eight sigilla fused medially, two distal sigilla more fused to each other than others ( Fig. 19 C ). Rastellum protuberant, subtriangular, hirsute, with row of strong spines apically ( Fig. 19 E–F). Subinguinal sulci with small denticles along prolateral row of teeth. Denticles in middle of prolateral row of teeth. Teeth on both margins, subequals in size ( Fig. 19 D ). Patella and tibia III with distal crown of well-developed thorns, interrupted on the middle on patella III and not interrupted in middle on tibia III ( Fig. 20 A–B). Tibia III with recurved crown of spines ( Fig. 20 B ). Patellae IV with spines on prolaterodorsal face along all length of article ( Fig. 20 C ). Tibia IV without spines on prolateral surface ( Fig. 20 D ). Ventral pseudoscopulae diffuse, in two parallel rows, occupying 70% of tarsi I, 50% of II and compacts, occupying 100% of tarsi III and IV. Carapace and chelicerae dark-brown; sternum reddish brown; legs dark-reddish-brown; tibia of palp slightly yellow; and abdomen dark-gray ( Fig. 19 A ). Eyes: Diameters: PME 0.25, PLE 0.21, ALE 0.47, AME 0.34; MOQ: Length 1.22, front width 1.02, back width 2.34; Interdistances: PME–PME 1.96, PLE–PME 0.18, AME–AME 0.24, ALE–AME 1.06, ALE–PLE 0.66, AME–PME 0.74. Ocular area: OAL 5.83, OAW 4.36, and IF 3.28. Body: Clypeus: 0.38; Fovea: 3.11; Labium: long 2.21; wide 1.61; Chelicerae: long 4.72; wide 2.53; Sternum: long 5.33; wide 4.87. Abdomen: long 8.07; wide 6.81. Leg measurements: I: Fe 7.66/ Pa 3.68/ Ti 3.46/ Me 5.14/ Ta 2.64/ total 22.58. II: 7.22/ 3.66/ 3.63/ 5.26/ 2.75/ 22.52. III: 6.07/ 3.87/ 2.8/ 5.71/ 2.98/ 21.43. IV: 8.39/ 3.95/ 5.65/ 6.6/ 3.11/ 27.7. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-0-3, d0, p0, r0; Me v0-3-5, d0, p0-1-3, r0-1-4; ta v0-2-1, d0, p0-2-2, r1-3-4. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-5-1, d0, p0, r0-1-3; Me v0-3-5, d0, p0-2-3, r0-0-2; ta v0, d0, p0-2-2, r3-7-5. III—Fe v0, d0, p0, r0; Pa v0, d5-10-15, p0, r0-0-3; ti v0, d1-0-12, p0-0-2, r0-1-3; Me v0-0-2, d3-4-4, p1-0-2, r0-2-1; ta v0, d0, p0, r0; IV—Fe v0, d0, p0, r0; Pa v0, d17-7-4, p3-4-0, r0; ti v0, d0, p0, r0; Me v1-0-2, d0, p0-1- 3, r0; ta v0, d0, p1-5-7, r0. Palp: BTA poorly developed, dorsally. Without PAc. Distal third of embolus with sharp inclination in relation to tegulum. PA poor pronounced ( Fig. 21 A–C).

VARIATION

MALES (n=4): Eyes: Diameters: PME 0.22–0.25, PLE 0.21–0.41, ALE 0.42–0.54, AME 0.34–0.45; MOQ: Length 1.22–1.38, front width 1.02–1.21, back width 2.34–2.72; Interdistances: PME–PME 1.96 – 2.25 , PLE–PME 0.13–0.18, AME–AME 0.22–0.39, ALE–AME 0.89–1.07, ALE–PLE 0.57–0.7, AME–PME 0.67–0.8. Ocular area: OAL 5.02–5.83, OAW 3.75–4.54, and IF 2.61–3.28. Body: Total length: 12.87–19.31; Carapace: Length 6.36–7.77; wide 6.93–8.55; Clypeus: 0.24–0.38; Fovea: 3–3.15; Labium: Length 2–2.45; wide 1.58–1.74; Chelicerae: Length 3.95–5.32; wide 2.2–2.53; Sternum: Length 5.17–7.45; wide 4.43–6.14. Abdomen: Length 5.61–10.62; wide 5.27–10.26. Leg measurements: I: Fe 6.93–7.98/ Pa 3.23–3.96/ Ti 3.46–4.48/ Me 5.01–5.6/ Ta 2.42–2.67/ total 21.36–24.53. II: 7.15–7.5/ 3.3–3.87/ 3.6–4.3/ 4.7–5.62/ 2.45–2.75/ 21.36–23.74. III: 5.8–6.39/ 3.59–3.87/ 2.67–3.24/ 5.47–6.22/ 2.98–3.31/ 20.85– 22.97. IV: 7.86–8.92/ 3.78–4.29/ 5.46–6.56/ 6.26–6.84/ 3.11–3.71/ 26.84–30.32.

Distribution. BRAZIL. S„o Paulo: S„o Carlos, Itirapina, and Brotas.

Examined material. BRAZIL: S„o Paulo : S„o Carlos, 1♂, [ 22° 31’ 59.9982” S 51° 58’ 59.9988” W] x.1982, E. J. Godoy leg. ( IBSP 114535 ); Itirapina, Estaç„o Ecológica de Itirapina, 22º15’ S 47º49’ W, 1♂, 14–21.v.2001, C. Bertim et al. leg. ( IBSP 114457 ); Brotas, [ 22° 16’ 59.9982” S 48° 7’ 0.0006” W], Região de Campo Cerrado, 1♂, 01.vii.1999, E. O. Oliveira leg. ( IBSP 107918 ) .

Figures

MAP 3. Distribution map of Actinopus fractus Mello-Leit„o, 1920, Actinopus obidos sp. nov., and Actinopus buritiensis sp. nov.

FIGURE 19. Actinopus fractus Mello-Leit„o, 1920, male:A–F IBSP 114535:A.Abdomen, dorsal; B. Carapace, dorsal; C. Sternum, ventral; D. Cheliceral teeth, ventral; E. Rastellum, dorsal; F. Rastellum, ventral. Scales lines B, C–D: 0.5 mm.

FIGURE 20. Actinopus fractus Mello-Leit„o, 1920, male: A–D IBSP 114535: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. Scales lines A–C: 0.5 mm.

FIGURE 21. Actinopus fractus Mello-Leit„o, 1920, male: A–C IBSP 14535: A. Copulatory bulb, prolateral; B. Copulatory bulb, dorsal; C. Copulatory bulb, retrolateral. PA-Paraembolic apophysis; BTA-Basal tegular apophysis; PI-Prolateral Inferior keel; PS- Prolateral Superior keel. Scale line: 1 mm.