Mazax ramirezi Rubio & Danişman, 2014

Silva-Junior, Cláudio J., Martínez, Leonel, Villarreal, Eduardo & Bonaldo, Alexandre B., 2024, Two fancy spines and a collar: a taxonomic review of the myrmecomorphic spider genus Mazax O. Pickard-Cambridge, 1898 (Araneae: Corinnidae: Castianeirinae) in South America, European Journal of Taxonomy 968 (1), pp. 219-255 : 237-240

Mazax ramirezi Rubio & Danişman, 2014

Figs 12–13

Mazax ramirezi Rubio & Danişman, 2014: 1185 , figs 1a–f, 2a–d, 3a–f, 4a–g, 5a–f.

Diagnosis

Males of M. ramirezi resemble those of M. acanthaspis comb. nov. by having the carapace with a thoracic groove and feathery hairs, but differ by the tibia I ventral spination being 4-4 (5- 4 in M. acanthaspis ) and by the absence of a dorsal projection on the embolus ( Fig. 13G–H ) (present in M. acanthaspis ). Females resemble those of M. acanthaspis by the lung-shaped ST II, but differ by having a tibia I ventral spination of 5-4 ( Fig. 12D ) (5- 5 in M. acanthaspis ), ST II with the proximal region wider than the distal region ( Fig. 12H ) (distal region of the same width as the proximal in M. acanthaspis ), and by having a twisted CD ( Fig. 12H ) (nearly straight in M. acanthaspis ).

Type material

Holotype ARGENTINA • ♀; Buenos Aires Province, Campana, Reserva Natural Otamendi ; [34°13.649′ S, 58°53.916′ W]; elev. 22 m; 27 Dec. 1997; B. Fuentes and O. Di Iorio leg.; MACN-Ar 30732 (examined).

Paratypes ARGENTINA • 1 ♂; same locality as for holotype; 10 Jan. 1998; MACN-Ar 30733 (examined) • 2 ♀♀; same locality as for holotype; 9 Jan. 1998; B. Fuentes leg.; MACN-Ar 30734 • 1 ♀; same locality as for holotype; 30 Dec. 1997; B. Fuentes and O. Di Iorio leg.; MACN-Ar 30735 (examined) • 1 ♀; same locality as for holotype; 1997; O. Di Iorio leg.; MACN-Ar 16720 • 1 ♀; same locality as for holotype; 21 Feb. 1998; B. Fuentes leg.; MACN-Ar 30736 (examined) .

Description

See Rubio & Danişman (2014: 1185).

Remarks

Rubio & Danişman (2014) described both males and females as having a 4-4 tibia I ventral spination, reporting no significant variation. However, upon examining the female holotype as well as the paratypes, only the male (MACN-Ar 30733) has 4-4 spines on the ventral surface of tibia I ( Fig. 13J ); the holotype (MACN-Ar 30732) has 5-4 ( Fig. 12D ). The other two female paratypes (MACN-Ar-30735 and MACN-Ar-30736) examined have 5-5 ventral spines on tibia I ( Fig. 12E–F ), Therefore, both M. ramirezi and M. spinosa display intraspecific variation regarding the tibia I spination. Additionally, it is possible to notice the atypical castianeirine RTA in this species ( Fig. 13G ).

Distribution

Known only from the type locality ( Fig. 20 ).

Figures

Fig. 12. Mazax ramirezi Rubio & Danişman, 2014. A–D, G–H. Holotype, ♀ (MACN-Ar 30732). E. Paratype, ♀ (MACN-Ar-30735). F. Paratype, ♀ (MACN-Ar-30736). A. Dorsal view. B. Lateral view. C. Ventral view. D. Tibia I, ventral view (black arrow indicates unpaired macroseta). E. Tibia I, ventral view. F. Tibia I, ventral view. G. Epigyne, ventral view. H. Same, dorsal view. Abbreviations: CD = copulatory duct, CO = copulatory opening; FD = fertilization duct; ST I = primary spermatheca; ST II = secondary spermatheca. Scales: 0.2 mm.

Fig. 13. Mazax ramirezi Rubio & Danişman, 2014. A–C. Paratype, ♀ (MACN-Ar-30736). D–J. Paratype, ♂ (MACN-Ar-30733). A. Dorsal view. B. Lateral view. C. Ventral view. D. Dorsal view. E. Lateral view. F. Ventral view. G. Palp, prolateral view. H. Same, ventral view. I. Same, retrolateral view. J. Tibia I, ventral view. Abbreviations: CP = chemocensory patch; E = embolus; RTA = retrolateral tibial apophysis. Scales: 0.2 mm.

Fig. 20. Distribution of the species of the Mazax pax group.