Actinopus xenus Chamberlin, 1917

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 : 235-238

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.5655705

persistent identifier

https://treatment.plazi.org/id/0975136A-FF67-CEB0-FF77-F85BD9083962

treatment provided by

Plazi

scientific name

Actinopus xenus Chamberlin, 1917
status

 

Actinopus xenus Chamberlin, 1917 View in CoL

Figs 213–214 View FIGURE 213 View FIGURE 214

Actinopus xenus Chamberlin, 1917: 29 View in CoL (holotype ♀, South America, MCZ 3, examined); World Spider Catalog, 2020.

Note. The redescriptions below was based on images and measurements of the holotype, taken by R. Saturnino .

Diagnosis. Females of A. xenus are characterized by the following combination of characters: unilobed seminal receptacles, which are subquadrate in shape and parallel to each other; apical external edge of each receptacle longer than internal edge ( Fig. 214 A View FIGURE 214 ). Smooth corrugated area on inner surface of Chelicerae less evident than in A. echinus ( Fig. 210 B View FIGURE 210 ).

FEMALE (Holotype): Total length 15.38; Carapace , long 9.14; wide 8.9. Carapace anterior part square and posterior part triangular. Anterior eye row procurved, posterior row slightly recurved. Many short and long bristles between AME-clypeus, one long bristle between PLE–ALE, short and long bristles between posterior eyes-fovea and short bristles between lateral eyes-edge of carapace ( Fig. 213 A View FIGURE 213 ). Sternum with eight sigilla strongly fused medially ( Fig. 213 B View FIGURE 213 ). Rastellum protuberant, digitiform, hirsute, with a row of short spines on the edge of rastellum and many short spines covering the dorsal rastellum ( Fig. 213 D View FIGURE 213 ). Chelicerae with denticles along prolateral row of teeth. Prolateral row with four megateeth and two teeth, decreasing in distal-proximal way. Retrolateral row with five megateeth and two teeth between three basal megateeth ( Fig. 213 C View FIGURE 213 ). Patella III with distal interrupted crown of developed thorns and tibia III with distal crown of thorns ( Fig. 213 View FIGURE 213 E–F). Patella IV with prolaterodorsal short spines along extension of article ( Fig. 213 G View FIGURE 213 ). Tibiae IV without spines and with long bristles on prolaterodorsal surface; Metatarsus with few thorns on basal part of dorsal surface and along prolateral surface; tarsus with thorns on prolateral and retrolateral surfaces ( Fig. 213 H View FIGURE 213 ). Carapace , chelicerae, sternum, coxae, trochantera, femora, patellae, Tibia , metatarsi, Tarsi and palp orangish-brown; And abdomen pale brown. Eyes : Diameters : MOQ: Length 1.51, front width 4.07, back width 3.83; Ocular area : OAL 8.22, OAW 5.50, and IF 3.42. Body : Fovea : 1.77. Abdomen : long 6.23; wide 3.97. Leg measurements: I: Fe 5.73. II: 3.63. III: 2.50. IV: 3.45. Formula 4123. 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. Right receptacle without sclerotized area in the basal region ( Fig. 214 A View FIGURE 214 ) .

Distribution. South America (exact location unknown).

Examined material. Only the types.

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Actinopodidae

Genus

Actinopus

Loc

Actinopus xenus Chamberlin, 1917

Miglio, Laura Tavares, Pérez-Miles, Fernando & Bonaldo, Alexandre B. 2020
2020
Loc

Actinopus xenus

Chamberlin, R. V. 1917: 29
1917
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