Barinas guanenta, García & Ahumada-C., 2022

Garcia, Andres F. & Ahumada-C., Daniela, 2022, Taxonomic notes on Barinas: a new generic synonym, a new cave-dwelling species, and new records from Colombia (Arachnida, Opiliones, Agoristenidae), Evolutionary Systematics 6 (1), pp. 1-7 : 1

publication ID	https://dx.doi.org/10.3897/evolsyst.6.78123
publication LSID	lsid:zoobank.org:pub:849C144C-73F5-45E3-A462-599B21A11191
persistent identifier	https://treatment.plazi.org/id/CC2CB362-F997-4921-9480-1567A07C568E
taxon LSID	lsid:zoobank.org:act:CC2CB362-F997-4921-9480-1567A07C568E
treatment provided by	Evolutionary Systematics by Pensoft
scientific name	Barinas guanenta
status	sp. nov.

Treatment

Barinas guanenta sp. nov.

Figs 1 View Figure 1 , 2 View Figure 2 , 4 View Figure 4

Type material.

Colombia• ♂ holotype: Santander, Cabrera, Cueva del Indio de Doña Joaquina; [6.562261; - 73.237897]; [1100 m]; 14 July 2007; Ca-vita grupo de bioespeleologia leg.; ICN-Ao-742.1 • 1 ♂ 1 ♀ paratypes; same data as the holotype; ICN-Ao-742.

Etymology.

Guanentá was the leader of the Guanes, an indigenous group that fought bravely against the Spanish conquerors in the region where the species was collected. Noun in apposition.

Diagnosis.

Can be distinguished by having pedipalps entirely pale yellow without variegated pattern (in B. piragua distal portion of Tr and Fe black, and tarsi entirely black; in B. virginis comb. nov. with a variegated pattern on Fe-Ti); variegated coloration on areas I-IV ( B. flava and B. piragua without variegated coloration); stylus of penis straight (in all other Barinas species the stylus is curved at apical portion) (Figs 1 View Figure 1 , 2 View Figure 2 ).

Description.

(Figs 1 View Figure 1 , 2 View Figure 2 ). Male holotype ( ICN-Ao-742.1) measurements (mm): CL (0.57), AL (1.22), CW (1.20), AW (1.44), DSL (1.79), IOD (0.27), ChL (0.86). Pedipalp: Tr (0.35), Fe (0.48), Pa (0.34), Ti (0.57), Ta (0.44), Claw (0.42). Legs I-IV (Tr/Fe/Pa/Ti/Mt/Ta/TL): I (0.21/2.45/0.43/1.93/3.69/1.24/9.95), II (0.27/6.19/0.65/5.38/7.30/3.57/23.36), III (0.34/4.02/0.75/2.47/4.85/1.29/13.72), IV (0.37/6.11/0.71/3.57/6.80/1.79/19.35). Dorsum: DS outline Epsilon type 2 (Figs 1A, B View Figure 1 , 2A View Figure 2 ). Cheliceral sockets narrow, separated by medial projection (Fig. 2A View Figure 2 ). Anterior margin of DS smooth. Ocularium high (Figs 1D, E View Figure 1 , 2B View Figure 2 ). Carapace smooth. Mesotergum delimited, divided into four areas (area I divided into two halves), with a transverse row of granules on each (Figs 1B, D View Figure 1 , 2A, B View Figure 2 ). Areas I-IV with two paramedian spines, AHF: I = IV < II = III (Figs 1D, E View Figure 1 , 2B View Figure 2 ); paramedian spines of areas III and IV projected backward (Figs 1D, E View Figure 1 , 2B View Figure 2 ). Posterior margin of DS substraight, with a row of tubercles. Free tergites I-III with a row of tubercles and anal operculum with some tubercles (Figs 1B View Figure 1 , 2A, B View Figure 2 ). Venter: Tegument granular. Coxa I with one trifid tubercle on the anterior margin and a transverse row of tubercles on the medial region (Fig. 2C View Figure 2 ). Coxa III-IV with some tubercles. Sternites with rows of spaced granules (Fig. 1C, D View Figure 1 ). Stigmatic area slightly granular. Stigmata large and oval (Fig. 1C View Figure 1 ). Genital operculum slightly granular. Chelicerae: Chelicera swollen. Segment I rectangular in dorsal view, with three-four tubercles on the proximal region and one-two tubercles on the ectal face (Figs 1B View Figure 1 , 2A View Figure 2 ). Basal region of the movable finger with abundant setiferous tubercles of different sizes (some reaching the medial region of hand) (Fig. 2D View Figure 2 ). Fixed finger with smooth inner surface (Fig. 2D View Figure 2 ). Movable finger with one trapezoid sub-basal tooth and distal inner surface dentate (Fig. 2D View Figure 2 ). Pedipalps: Trochanter with five dorso-basal tubercles and two ventroectal tubercles. Fe with a ventroectal row of four setiferous tubercles (the two basalmost largest and the two distalmost small-sized), and one large ventromesal setiferous tubercle in the distal portion. Pa armed with one large ventromesal setiferous tubercle (Fig. 2E View Figure 2 ). Tibial setation: ectal iiIi, mesal IIi. Ta setation: ectal I?i, mesal IIi. Legs: Leg I-IV granular. Leg I filiform, the rest getting steadily thicker from leg II-IV (Fig. 1A View Figure 1 ). Tr I-III slightly granular, Tr IV with two dorsodistal tubercles (Figs 1B View Figure 1 , 2A View Figure 2 ). Tarsal counts: 7(3)-7(3)/17(3)-16(3)/7-7/8-7. Penis: LP small and depressed, crescent-shaped, with anterolateral short sharp corners, apically pointed (Fig. 2F View Figure 2 ). Malleus with two pairs of trifid MS-A, and one pair of trifid MS-B (Fig. 2F View Figure 2 ); MS-C absent. Two pairs of MS-D located in a keel between the ventral part of LP and the base of the stylus; MS-E2 large and trifid, MS-E1 medium-sized (half of the size of MS-E2) (Fig. 2F View Figure 2 ). Stylus straight and elongated, surpassing the LP, with a short DP at the proximal region, and a DH just after the union of the DP with the stylus (Fig. 2G, F View Figure 2 ). Color (in ethanol) (Fig. 1A-E View Figure 1 ): Carapace and mesotergum reticulated Dark Grayish Olive (111) on Light Grayish Olive (109). Pedipalps and chelicerae Yellowish White (92). Free tergites Dark Olive (108). Coxae I-IV Light Grayish Olive (109) with lateral margins Dark Olive (108), trochanters I-IV Light Grayish Olive (109). Fe, Pa, and Ti I Dark Olive (108). Femora and tibiae II-IV Light Grayish Olive (109), patellae II-IV Dark Olive (109).

Female paratype ( ICN-Ao-742). Similar to male, except for the non-hipertelic chelicera and shorter Fe IV. Measurements (mm): CL (0.57), AL (0.93), CW (1.06), AW (1.24), DSL (1.50), IOD (0.23), ChL (0.61). Pedipalp: Tr (0.22), Fe (0.49), Pa (0.32), Ti (0.46), Ta (0.43), Claw (0.33). Legs (Tr/Fe/Pa/Ti/Mt/Ta/TL): I (0.26/2.00/0.42/1.52/2.96/1.05/8.21), II (0.34/4.87/0.50/4.54/6.08/3.69/20.02), III (0.31/3.70/0.64/2.21/4.02/1.16/12.04), IV (0.34/5.52/0.65/?/?/?/?). Tarsal counts: 7-7/17-?/7-?/?-?.

Distribution.

Known only from the type locality, a cave in the Magdalena Valley montane forest ecoregion (NT0136) (Fig. 4 View Figure 4 ).