Eustiromastix spinipes ( Taczanowski 1871 )

Suarez-Martinez, Leiner A. & Bedoya-Roqueme, Edwin, 2021, First report of Eustiromastix spinipes (Taczanowski 1872) (Araneae: Salticidae: Saltafresia) from Colombia, with new salticid records for the Department of Córdoba, Peckhamia 240 (1), pp. 1-13 : 6-8

6. Eustiromastix spinipes ( Taczanowski 1871) , Figures 4-5

Attus spinipes Taczanowski 1871 ; Amycus spinipes Petrunkevitch 1911 ; Freya guianensis Caporiacco 1947 ; Capidava spinipes Mello-LeitaBo 1948; Freya guianensis Caporiacco 1948, 1955 ; Chira spinipes Galiano 1968 b ; Chira spinipes Ruiz & Brescovit 2008 ; Eustiromastix spinipes Edwards 2015 .

Material examined. 1♀ [ Figures 4-5 ], Colombia, Co ́ rdoba, Tierralta: TuisTuis . This locality can be associated with approximate coordinates of [8°2'2.881"N, 76°5'29.993"W], [258m], 3 Dec 2014, humid forest, manual collection, E . Bedoya – Roqueme leg . (LEUC; OARA-092). Type material deposited in the MZUF not examined .

Diagnosis. According to Galiano (1968) and Edwards (2015), females of Eustiromastix can be easily differentiated by presenting widely separated COs and elongated CDs that rotate in a spiral before entering the spermatheca ( Figures 4E , 5A and as described by Edwards 2015, fig. 11E). The males have an extremely long, whip-shaped embolus, thin and longer than the TDD, the TBD is tilted to the prolateral side (see Edwards 2015, figs. 11H-L). Additionally, in the female E. spinipes , the anterior face of the chelicerae is quite convex, with a tooth in the retromargin (see Galiano 1968, fig. 14).

Short description. This female, collected in the humid forest area, Tierralta ( Colombia), is very similar to the descriptions of Galiano (1968) and Edwards (2015): medium-sized spiders, brownish-yellow cephalothorax ( Figure 4A ), with pale submarginal bands ending in the paramedial location along the posterior edge of the carapace, and a wider pale thoracic stripe beginning behind the ELPs ( Figure 4A ), female chelicerae shorts, the anterior face of each paturon is quite convex, with a tooth in the retromargin ( Figure 4B ). Abdomen brown laterally with few small pale markings laterally, broad median tan stripe of variable width with small scattered symmetrical brown marks within the stripe (see Edwards 2015, fig. 11A). Female epigyne generally with widely separated copulatory openings ( Figures 4 C-D, 5B), and distinctive, elongated copulatory ducts that spiral several times before entering the spermathecae ( Figures 4E , 5A ). Leg segments ringed with brown distally.

Measurements (specimen from Colombia). One female: TL= 9.17; CL= 3.71; CW= 3.53; AL= 5.34; AERW= 2,96; PERW= 2.83; LOQ= 2.04; PMEP=0.34-0.36; eyes of the second row separated from the ALE by 0.69 mm and from the PLE by 0.66 mm.

Natural history. In general, specimens of Eusteromastix spinipes can be commonly found on the ground and on low vegetation in fields and open forests. According to Edwards (2015) they can also be found in shrubs in open areas and low branches along the edges of the forest, and occasionally in the canopy. In Colombia, specimens of E. spinipes were collected in low shrub vegetation in tropical humid forest at an elevation of 258 meters above sea level.

Distribution. Brazil, French Guiana, Guyana, Peru, Tobago, Trinidad, Venezuela.

Figures

Figure 4. Female Eustiromastix spinipes. A, Habitus, dorsal view. B, Chelicerae, posterior aspect. C-E, Epigyne, (C) ventral view, (D), same, cleared, (E) dorsal view, cleared.

Figure 5. Female Eustiromastix spinipes (Taczanowski, 1872). A, Epigyne, dorsal view. B, Epigyne, ventral view. CD= copulatory duct; FD= fertilization duct; Sp= Spermatheca.