Agalenocosa gentilis Mello-Leitão

Piacentini, Luis N., 2014, A taxonomic review of the wolf spider genus Agalenocosa Mello-Leitão (Araneae, Lycosidae), Zootaxa 3790 (1), pp. 1-35 : 18-19

publication ID	https://doi.org/ 10.11646/zootaxa.3790.1.1
publication LSID	lsid:zoobank.org:pub:F5C77E2B-0FE0-4740-BF00-2421E7061EC6
DOI	https://doi.org/10.5281/zenodo.6133805
persistent identifier	https://treatment.plazi.org/id/367587E8-FF83-FFE1-FF1B-5600A50FD82C
treatment provided by	Plazi
scientific name	Agalenocosa gentilis Mello-Leitão
status

Treatment

Agalenocosa gentilis Mello-Leitão View in CoL

( Figs 17 View FIGURE 17 , 24 View FIGURE 24 e, 26)

Agalenocosa gentilis Mello-Leitão 1944: 336 View in CoL , f. 23, female from Argentina, Buenos Aires, Tigre (MLP 16000), examined.

Other material examined. ARGENTINA. Buenos Aires: Paraná, Isla Catalina, Doello, Daguerre, J. B. , 25. ii.1934, 1 ♀ (MACN-Ar 22743); Paraná de las Palmas, Bachmann, A., ii.1963, 2 ♀ 6 immatures (MACN-Ar 22788); Delta, Río Sarmiento, Bachmann, A., 4. xii.1947, 1 ♀ 1 immature (MACN-Ar 22753); Tigre, Damico, xi.1947, 4 ♀ 3 eggsac (MACN-Ar 22760); Delta, Paraná de las Palmas, Bachmann, A., 28. i.1964, 1 ♀ (MACN-Ar 22765); Rincón de Milberg, xii.1980, 1 ♀ (MACN-Ar 28987); San Fernando, Piacentini, L., xii.2002, 1 ♀ 1 immature (MACN-Ar 22758); same data, 1 ♀ (MACN-Ar 22777); Punta Lara, Partridge, W., 1. xi.1946, 1 ♀ (MACN-Ar 22776); same locality, Miranda & Ramírez, M., 4. xii.1981, 1 ♀ (MACN-Ar 30642).

Diagnosis. The females of A. gentilis resembles those of A. punctata and A. velox by the coloration pattern ( Figs 15 View FIGURE 15 , 17 View FIGURE 17 ), but can be differentiated by the acute shape on the anterior margin of the lightly sclerotised area that surrounds the copulatory opening, and by the vulval chamber dorsal to the spermathecae ( Fig. 17 View FIGURE 17 b).

Description. Male. Unknown.

Female (MACN-Ar 22765). Carapace brown with light brown median band with a conspicuous Y-shaped dark mark that extends from the fovea to the PLE, pale submarginal bands ( Figs 17 View FIGURE 17 a–c). Sternum yellow, sparsely covered with brown bristles, more abundant on the margins. Labium dark grey. Chelicerae lighter than labium, light brown, covered with brown bristles. Dorsum of abdomen brown with longitudinal irregular pale marks on the center and longitudinal lines of white pubescence on its lateral sides ( Figs 17 View FIGURE 17 a–c). Venter pale brown. Legs pale brown without annulations. Leg formula IV> I> II> III.

Spination: femur I p 0-0-d1 d 1-1-1, II p d1-0-d1 d 1-1-1 r d1-0-d1, III p d1-0-d1 d 1-1-1 r d1-0-d1, IV p d1- 0-d1 d 1-1-1 r 0-0-d1; patella II p 1, III p 1 d 1-1 r 1, IV p 1 d 1-1 r 1; tibia I v 2-2-0, II p d1-0-d1 v 2-2 -0, III p d1-0-1 d 1-1-0 r 0-1-1 v 2-2 -2ap, IV p 0-d1-d1 d 1-0-1 r 0-1- 1 v p2-2-2ap; metatarsus I v 2-2-2ap, II p 1-0-2ap r 0-0-1ap v 2-2 -1ap, III p d1-d1-2ap r d1-d1-2ap v 2-2 -1ap, IV p d1-1-1 d 0-0-2 r d1-1-1 v 2-2 -1ap.

Epigynal plate without pockets or atria, copulatory openings surrounded by a rounded lightly sclerotised area with an acute anterior margin ( Fig. 17 View FIGURE 17 d). Vulva: head of spermatheca rounded, almost of the same length of the stalk, which has a dorsal protrusion. Vulval chamber small and rounded, next to the base of spermathecae in dorsal view ( Fig. 17 View FIGURE 17 e).

Measurements. MACN-Ar 22765: TL 5.47, PL 3.33, PW 2.27, PH 1.07, OL 2.27. Eyes: AME 0.13, ALE 0.08, PME 0.22, PLE 0.18. Row of eyes: AER 0.52, PME 0.55, PLE 0.78. Sternum (length/width) 1.42/1.22. Labium (length/width) 0.50/0.47. Legs: length of segments (femur + patella/tibia + metatarsus + tarsus = total length): I 2.47 + 3.07 + 2.00 + 1.00 = 8.54, II 2.33 + 2.73 + 1.93 + 1.00 = 7.99, III 2.27 + 2.40 + 2.00 + 0.87 = 7.54, IV 3.00 + 3.67 + 3.27 + 0.93 = 10.87.

Variation (range, mean ± s.d.). TL 5.07 – 6.47, 5.82 ± 0.46; CL 3.00 – 3.67, 3.16 ± 0.20; CW 2.13 – 2.60, 2.33 ± 0.13 n = 10.

Distribution. Known only from eastern central Argentina at northeast of Buenos Aires Province ( Fig. 26 View FIGURE 26 ).