Actinopus castelo, 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. 1-256 : 16-18

publication ID

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

DOI

https://doi.org/10.5281/zenodo.5655547

persistent identifier

https://treatment.plazi.org/id/0975136A-FF82-CE4C-FCD5-FF4EDF8C3A53

treatment provided by

Plazi

scientific name

Actinopus castelo
status

sp. nov.

Actinopus castelo sp. nov.

Figs 10–12 View FIGURE 10 View FIGURE 11 View FIGURE 12 , Map 1 View MAP 1

Type material. BRAZIL. Holotype male from 05º 13’ 48.8” S 41º 41’ 59.0” W, Fazenda Bonito, ECB Rochas Ornamentais, Castelo do Piauí, Piauí, Brazil, 12.ii.2006, F. S. Rodrigues leg. ( MPEG 22277 View Materials ) GoogleMaps . Paratypes: BRAZIL. Piauí: Castelo do Piauí, ECB Rochas Ornamentais, Fazenda Bonito , Plot Cerrado Rupestre , 05º 13’ 48.8” S 41º 41’ 59.0” W, 10♂, 12.ii.2006, F. S. Rodrigues leg. ( MPEG 2400 View Materials , 1 View Materials ♂ removed for SEM); GoogleMaps Plot Campo Sujo, 05º 14’ 07.1” S 41º 41’ 16.3” W, 9♂, 10.ii.2006, F. S. Rodrigues leg. ( MPEG 2399 View Materials ); GoogleMaps Caracol, Parque Nacional da Serra das Confusıes, Plote PPBio Semiárido, 09° 13’ 16” S 43° 29’ 21” W, 1♂, x.2006, P. R. R. Silva et al. leg. ( CHNUFPI 202 ) GoogleMaps . Bahia: Paulo Afonso, Estaç „o Ecológica Raso da Catarina , 09° 39’ 58.1” S 38° 28’ 15.1” W, 4♂, 22–23.v.2012, I. L. F. Magalh „es & J. L. Chavari leg. ( UFMG 11681 View Materials ); GoogleMaps 5♂, 22–23. V.2012, I. L. F. Magalhães & J. L. Chavari leg. ( IBSP 162680 View Materials ) GoogleMaps .

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

Diagnosis. Males of A. castelo differ from those of all other species of the genus, except A. tarsalis ( Fig. 9 View FIGURE 9 A–C, see Miglio et al., 2012, figs 1–12), by the copulatory bulb without BTA and by the robust embolar base, inserted basally at a right angle (90°); embolar apex flattened and expanded, arrow-shaped in dorsal view ( Fig. 12 View FIGURE 12 A–C). They differ from those of A. tarsalis by the PAc developed in prolateral view of embolus, tegulum thinner, PA less conspicuous and by the presence of a large scutum covering almost all the dorsal surface of abdomen ( Fig. 10 A View FIGURE 10 ).

MALE ( MPEG 22277 View Materials ): Total length 9.75; Carapace , long 5.25; wide 5.12. Carapace anterior part tapering. Anterior eye row slightly procurved, posterior row recurved ( Fig. 10 B View FIGURE 10 ). With five short bristles between AME and clypeus; two bristles between ALEALP 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. 10 C View FIGURE 10 ). Rastellum protuberant, inverted V-shaped, hirsute, without spines in apex ( Fig. 10 E, F View FIGURE 10 ). Chelicerae with nine denticles along prolateral row of teeth. Prolateral row with five megateeth. Retrolateral row with six megateeth ( Fig. 10 D View FIGURE 10 ). Patella and tibia III with distal crown of well-developed thorns, on two articles, interrupted in middle ( Fig. 11 A, B View FIGURE 11 ). Patellae III and IV with spines on prolaterodorsal face ( Fig. 11 A, C View FIGURE 11 ). Tibia IV without spines on dorsal surface and with two visible rows of trichobothria ( Fig. 11 D View FIGURE 11 ). Ventral pseudoscopulae occupies 50% of tarsus I, 40% of II and 100% of III and IV. Pseudoscopula on tarsi I and II with setae spaced, forming diffuse group of bristles; on tarsi III and IV, compact. Carapace , chelicerae, sternum, coxae, trochanters, femora, patellae, tibiae, metatarsi and tarsi yellowish-brown; Abdomen pale brown ( Fig. 9 A View FIGURE 9 ). Eyes: Diameters : PME 0.12, PLE 0.20, ALE 0.24, AME 0.28; MOQ: Length 0.72, front width 2.36, back width 2,00; Interdistances : PME–PME 1.28 , PLE–PME 0.16, AME–AME 0.16, ALE–AME 0.44, ALE–PLE 0.36, AME–PME 0.44. Ocular area : OAL 11.63, OAW 8.13, and IF 1.75. Body : Clypeus : 0.25; Fovea : 2.13; labium: long 1.13; wide 1.00; Chelicerae : long 2.375; wide 1.625; sternum: long 3.5; wide 2.875. Abdomen : long 4.75; wide 3.75. Leg measurements: I: Fe 5.625/ Pa 1.625/ Ti 3.625/ Me 4.625/ Ta 2.75/ total 18.25 . II: 5.25/ 2.25/ 3.25/ 4.75/ 2.75/ 18.25. III: 4.125 / 2.375 / 2.5/ 4.625 / 2.875 / 16.5. IV: 5.625/ 2.625/ 4.875/ 5.375/ 2.625/ 21.125. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0-0-1, d0, p0, r0; ti v2-4-6, d0, p0, r0-4-6; Me v9-14-12, d0, p2-2-2, r1- 4-3; ta v6-10-15, d0, p1-1-2, r3-5-7. II—Fe v0, d0, p0, r0; Pa v0-0-1, d0, p0, r0; ti v1-4-5, d0, p0, r0-4-6; Me v4-12-11, d0, p0-0-4, r4-2-3; ta v7-8-9, d0, p0-3-3, r2- 4-7. III—Fe v0, d0, p0, r0; Pa v0, d11-14-25, p0, r0-0- 3; ti v0-0-4, d1-0-14, p0-0-2, r0-0-3; Me v0-4-6, d2-2- 1, p3-2-4, r4-5-7; ta v0, d0, p2-3-5, r2-4-5; IV—Fe v0, d0, p0, r0; Pa v0, d21-14-6, p0, r0; ti v0-0-4, d0, p0, r0; Me v7-8-11, d0, p1-1-2, r0-0-1; ta v0, d0, p0-2-5, r0-1-1. Palp: PA well developed, embolus with three small keels (PAc, PI and PS); keels evident in dorsal and prolateral views, barely visible retrolaterally. BTA absent; prolateral tegulum serrated next to base of embolus and big swelling on tegulum surface, in same direction of PA, but more dorsally ( Fig. 12 View FIGURE 12 A–C).

Distribution. BRAZIL. Piauí: Castelo do Piauí and Caracol. Bahia: Paulo Afonso ( Map 1 View MAP 1 ).

R

Departamento de Geologia, Universidad de Chile

V

Royal British Columbia Museum - Herbarium

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Actinopodidae

Genus

Actinopus