Actinopus echinus Mello-Leitão, 1949

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 : 232-234

publication ID

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

publication LSID

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

DOI

https://doi.org/10.5281/zenodo.5655703

persistent identifier

https://treatment.plazi.org/id/0975136A-FF6A-CEB4-FF77-F9AEDFC23402

treatment provided by

Plazi

scientific name

Actinopus echinus Mello-Leitão, 1949
status

 

Actinopus echinus Mello-Leitão, 1949 View in CoL

Figs 210–212 View FIGURE 210 View FIGURE 211 View FIGURE 212 , Map 16 View MAP 16

Actinopus echinus Mello-Leitão, 1949: 1 (holotype ♀, Confluence of the river Koluene with river Xingu , Reserva Indígena do Xingu, northeast of Gaúcha do Norte, Mato Grosso, Brazil, MNRJ, lost in assault on transport truck); World Spider Catalog, 2020.

Note. The material examined can be identified as A. echinus by the following characters which are congruent with the original description: arrangement of cheliceral teeth, spines of rastellum and position and size of eye.

Diagnosis. Females of A. echinus can be identified by the following combination of characters: unilobed seminal receptacles, which are subquadrate in shape and parallel to each other ( Fig. 212 View FIGURE 212 ); PLE three times larger than PME; carapace with parallel lateral margins of cephalic region ( Fig. 210 B View FIGURE 210 ).

FEMALE (IBSP 102907): Total length 20.86; Carapace, long 9.93; wide 10.26. Carapace anterior part square and posterior part triangular. Anterior eye row procurved, posterior row recurved. Long and short bristles between AME-clypeus, rare and widespread on interdistances PME–PME and PLE–PLE. Short bristles between lateral eyes-edge of carapace ( Fig. 210 B View FIGURE 210 ). Sternum with eight sigilla fused medially, two distal sigilla more fused to each other than others ( Fig. 210 C View FIGURE 210 ). Rastellum protuberant, rectangular, hirsute, with many dorsal spines ( Fig. 210 View FIGURE 210 E–F). Prolateral row of Chelicerae teeth with teeth decreasing on distal-proximal way. Denticles widespread along Prolateral row ( Fig. 210 D View FIGURE 210 ). Patella III and IV and Tibia III with distal developed crowns of thorns ( Fig. 211 View FIGURE 211 A–C). Patella III and IV with prolaterodorsal short spines along extension of article ( Fig. 211 A, C View FIGURE 211 ). Tibia IV without spines and with long bristles on prolaterodorsal surface ( Fig. 211 D View FIGURE 211 ). Many robust spines on the distal parts of the prolateroventral and retrolateroventral surfaces of tarsi III; and in the ventral and prolateral surfaces of tarsi IV; and prolateral and retrolateral surfaces of tarsi and metatarsi I and II. Reddish brown carapace with a diffuse orangish region extending from the posterior area of AME to chilum ( Fig. 210 B View FIGURE 210 ). Reddish-brown Chelicerae with a row of dorsal bristles disposed on a region yellowish; sternum orangish; legs with coxae, trochanters and femora reddish-brown and the rest of articles orange; brown abdomen with a big spot of unpigmented area on dorsal surface ( Fig. 210 A View FIGURE 210 ). 58 labial cuspules, 231 on right maxilla and 165 on left. Eyes: Diameters: PME 0.29, PLE 0.52, ALE 0.47, AME 0.31; MOQ: Length 1.67, front width 1.45, back width 3.26; Interdistances: PME–PME 2.6, PLE–PME 0.22, AME–AME 0.67, ALE–AME 1.46, ALE–PLE 1.18, AME–PME 1.12. Ocular area: OAL 7.88, OAW 5.97, and IF 4.43. Body: Clypeus: 0.37; Fovea: 3.97; Labium: long 3.26; wide 2.37; Chelicerae: long 5.9; wide 4.27; Sternum: long 7.42; wide 6.47.Abdomen: long 11.7; wide 8.05. Leg measurements: I: Fe 6.06/ Pa 4.33/ Ti 3.04/ Me 3.5/ Ta 1.61/ total 18.54. II: 6.43/ 4.39/ 2.89/ 4.1/ 2.18/ 19.99. III: 4.83/ 4.9/ 1.26/ 3.1/ 1.15/ 15.24. IV: 7.39/ 5.1/ 3.8/ 3.04/ 1.27/ 20.6. Fórmula 4123. Spinulation: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0-1-3, d0, p0-0-8, r8- 29-16; Me v3-5-4, d0, p10-15-4, r6-11-7; ta v1-0-3, d0, p5-9-4, r4-5-3. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0, d4-42-9, p0-0-3, r11-27-20; Me v0-3-2, d0, p9-12-6, r7-14-11; ta v0-0-3, d0, p8-9-5, r6-7-9. III—Fe v0, d0, p0, r0; Pa v0, d0-0-35, p0, r0-0-10; ti v0, d1-0-19, p7-9-12, r0; Me v0-0-5, d0-5-3, p0, r10-14-11; ta v19-29-10, d0-4- 2, p0-4-7, r9-15-8; IV—Fe v0, d0, p0, r0; Pa v0, d2-0-22- 9, p7-10-3, r0; ti v0, d0, p0, r0; Me v0-0-2, d0-2-1, p0-1- 4, r0; ta v8-7-12, d0-1-2, p0-5-8, r0-0-1. Spermathecae: Subquadrates seminal receptacles, one parallel to each other, as long as wide, with short duct. Left receptacle with sclerotized region reaching the half of the receptacle. In dorsal view, right receptacle without sclerotized area in the basal region, pores distributed asymetrically ( Fig. 212 A View FIGURE 212 ).

Distribution. BRAZIL. Mato Grosso; and Mato Grosso do Sul: Brilhante ( Map 16 View MAP 16 ).

Examined material: BRAZIL: Mato Grosso do Sul: Brilhante , [21° 48’ 0” S 54° 32’ 59.9994” W], 1♀, 1952, D. Mariano leg. ( IBSP 102907 View Materials ) GoogleMaps .

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Actinopodidae

Genus

Actinopus

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