Actinopus xingu, 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 : 103-105

publication ID	https://doi.org/ 10.11646/megataxa.2.1.1
DOI	https://doi.org/10.5281/zenodo.5655601
persistent identifier	https://treatment.plazi.org/id/0975136A-FFEB-CE35-FF77-F8C7D8D83ACD
treatment provided by	Plazi
scientific name	Actinopus xingu
status	sp. nov.

Treatment

Actinopus xingu View in CoL sp. nov.

Figs 92–94 View FIGURE 92 View FIGURE 93 View FIGURE 94 , Map 5 View MAP 5

Type material. Holotype male from 03º 04’ S 51º 46’ W, Margem Direita do Rio Xingu, Senador José Porfírio, Pará, Brazil , 24.ii.2001 ( MPEG 239 View Materials ) GoogleMaps . Paratypes: BRAZIL. Pará: Senador José Porfírio, Margem Direita do Rio Xingu , 03º 04’ S 51º 46’ W, 1 GoogleMaps ♂, 25.ii.2001 ( MPEG 240 View Materials , 244 View Materials ) ; 1♂, 02.iii.2001 ( MPEG 242 View Materials ) ; 1♂, 04.iii.2001 ( MPEG 243 View Materials ) ; 3♂, 03.iii.2001 ( MPEG 245 View Materials ) ; trilha do Censo , 1 ♂, 23.ii.2002 ( MPEG 238 View Materials ) .

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

Diagnosis. Males of A. xingu resemble those of A. vilhena ( Fig. 75 View FIGURE 75 A–C), A. harveyi ( Fig. 78 View FIGURE 78 A–C), A. itapitocai ( Fig. 83 View FIGURE 83 A–C), A. nattereri ( Fig. 67 View FIGURE 67 A–C) and A. utinga ( Fig. 103 View FIGURE 103 A–C) by the BTA displaced dorsally in relation to a middle longitudinal line along prolateral tegular surface ( Fig. 94 A View FIGURE 94 ). They r Resemble those of A. vilhena , A. nattereri and A. utinga by the keels being very close to each other, as seen in prolateral view ( Fig. 94 A, B View FIGURE 94 ) and those of A. vilhena , A. harveyi , A. itapitocai , A. itaqui ( Fig. 91 View FIGURE 91 A–C) and A. utinga by PA continuous to PI. They differ from those of all other species of the group nattereri by a prolateral tegular depression above PA on prolateral tegular margin as seen in dorsal view and distal third of reservoir corrugated ( Fig. 94 A View FIGURE 94 ).

MALE (MPEG 239): Total length 16.38; Carapace, long 7.00; wide 6.25. Carapace rounded. Anterior eye row slightly procurved, posterior row recurved ( Fig. 92 B View FIGURE 92 ). With one short bristle between AME-clypeus. With one long bristle between ALE–ALP and few short and weak bristles between posterior eyes-fovea and lateral eyesedge of carapace. Sternum with eight sigilla strongly fused medially ( Fig. 92 C View FIGURE 92 ). Rastellum protuberant, inverted Vshaped, hirsute, without spines apically ( Fig. 92 E, F View FIGURE 92 ). Chelicerae with seven denticles along prolateral row of teeth. Prolateral row with five megateeth and one tooth on basal part. Retrolateral row with five megateeth and two denticles between three basal megateeth ( Fig. 92 D View FIGURE 92 ). Patella and tibia III with distal crown of well-developed thorns, not interrupted in middle ( Fig. 93 A, B View FIGURE 93 ). Patellae III and IV with spines on prolaterodorsal face ( Fig. 93 A, C View FIGURE 93 ). Tibia IV without spines on dorsal surface ( Fig. 93 D View FIGURE 93 ). 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; on tarsi III and IV, compact. Carapace, chelicerae, sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi and tarsi reddish brown; abdomen pale gray with dorsal scutum occupying 1/3 of anterior abdomen ( Fig. 92 A View FIGURE 92 ). Eyes: Diameters: PME 0.36, PLE 0.4, ALE 0.56, AME 0.48; MOQ: Length 1.32, front width 2.96, back width 2.8; Interdistances: PME–PME 1.56, PLE–PME 0.12, AME–AME 0.2, ALE–AME 0.56, ALE–PLE 0.6, AME–PME 0.4. Ocular area: OAL 4.5, OAW 3.75, and IF 2. Body: Clypeus: 0.25; Fovea: 2.62; Labium: long 1.37; wide 1.12; Chelicerae: long 3.5; wide 1.87; Sternum: long 4.37; wide 3.5. Abdomen: long 7.87; wide 5. Leg measurements: I: Fe 6.62/ Pa 3/ Ti 4.25/ Me 4.75/ Ta 2.87/ total 21.5. II: 6.25/ 3/ 3.75/ 5/ 2.87/ 20.87. III: 5.25/ 3.12/ 2.87/ 5.12/ 2.75/ 19.12. IV: 7.25/ 3.25/ 5.75/ 6/ 3.37/ 25.62. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-0-3, d0, p0, r0; Me v3-3-5, d0, p1-0- 1, r2-6-6; ta v0, d0, p0-3-2, r1-6-4. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-2-1, d0, p0, r0-0-2; Me v2-4-2, d0, p0-0-2, r0-4-5; ta v0-0-2, d0, p1-2-4, r1-4-6. III—Fe v0, d0, p0, r0; Pa v0, d3-6-16, p0-0-2, r0; ti v0, d0-0-12, p0- 0-2, r0-0-1; Me v1-0-2, d1-1-2, p1-0-2, r0-2-3; ta v0, d0, p1-3-4, r0-7-4; IV—Fe v0, d0, p0, r0; Pa v0, d11-11-4, p0-0-1, r0; ti v0-0-2, d0, p0, r0; Me v0-1-1, d0, p1-1-3, r0; ta v0, d0, p0-6-9, r0-3-9. Palp: PA well-developed, continuous to PI. Embolus with three keels (PAc, PI and PS). BTA developed, displaced dorsally in relation to middle longitudinal line along prolateral tegular surface; serrated area below PAc with one denticle; embolar base thin and elongated ( Fig. 94 View FIGURE 94 A–C).