Agalenocosa punctata 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 : 14-18

Agalenocosa punctata Mello-Leitão

( Figs 1 b, 8d, 15, 16, 24d, 26)

Agalenocosa punctata Mello-Leitão, 1944: 337 , figures 24–25; male lectotype from Argentina: Buenos Aires, La Plata (MLP 16005) and female paralectotype (here designated, MLP nº 16006) from the same locality as holotype, examined.

Other material examined. ARGENTINA. Entre Ríos: Parque Nacional Predelta, bañado cerca de entrada, 6 km S Diamante, S32.12194° W 60.62996° (GPS, +- 20m), elev. 10m, 30.iv.2013, Ramírez, M. J., Piacentini, L. N., González, M. E., Laborda, A. & Aisen, S., 1 ♀ (MACN-Ar 30644). Buenos Aires: Tigre: Isla Tres Bocas, Olejnik, N. & López, N., 3.vi.2007, in leaf litter, 1 ♂ (MACN-Ar 12519); Boca del Río Salado, canal T-1-F, Botto & Irigoyen, 30. vi.1973, 2 ♂ 1 ♀ 3 immatures (MACN-Ar 22707); Río Salado, canal T-1-B, Botto & Irigoyen, 29. vi.1973, 1 ♂ (MACN-Ar 22719); Río Salado, arroyo T-1-C; cangrejal, Botto & Irigoyen, 3. viii.1973, 1 ♂ (MACN-Ar 22729). Ciudad Autónoma de Buenos Aires: Playa Núñez, Castillo, F., viii.1936, 1 ♂ 1 ♀ (MACN- Ar 22725); same locality, 1 ♀ (MACN-Ar 22766); Museo Argentino de Cs. Naturales, Galiano, M. E., 7. v.1963, 1 ♂ (MACN-Ar 22756); Bañados de Palermo, Frers, A. G., 6.ix.1917, under trunks in marshes, 1 ♂ 1 ♀ (MACN-Ar 22782).

Diagnosis. Males of A. punctata resemble those of A. velox by the coloration pattern, but can by recognised by the broad and short terminal apophysis, longitudinally oriented ( Figs 16 d, 10d). The females also resembles those of A. velox in the shape of the epigyne, but have a smaller epigynal plate ( Figs 16 a, 10a) and a short and straight stalk of the spermathecae ( Figs 16 b, 10b).

Description. Male (MACN-Ar 22756). Carapace brown, with a light brown median band and a conspicuous Y-shaped dark mark that extends from the fovea to the PLE, submarginal bands pale ( Figs 15 d–f). Sternum yellow, sparsely covered with brown bristles, more abundant on 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 15 d–f). 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 r 0-0-d1, II p d1-0-d1 d 1-1-1 r d1-0-d1, III p 0-0-d1 d 1-1-1 r 0-0-d1, IV p 0-0-d1 d 1-1-1 r 0-0-d1; patella I d 1-1, II p 1 d 0-1, III p 1 d 1-1 r 1, IV p 1 d 0-1 r 1; tibia I p d1-1 v 2-2 -0, II p d1-1 v 2-2 -0, III p 1-1 d 1-1 r 1-1 v 2-2 -2ap, IV p 1-1 d 1-1 r 1-1 v 2-2 -2ap; metatarsus I p 1-ap1 r 0-1ap v 2 - (p1r1)-1ap, II p 1-ap1 r 0-1ap v 2 -(p1r1)-1ap, III p d1-1-2ap r d1-1-2ap v 2-2 -1ap, IV p d1-1-1 d 0-0-2 r d1-1-1 v 2-2 -1ap.

Palp. Basal apophysis of the palpal tibia rounded, medium sized ( Fig. 8 d). Subtegulum in the meso-prolateral side of the alveolus. Tegulum with a shallow prolateral furrow ( Figs 16 c, d). Ventral branch of the median apophysis rounded, dorsal branch triangular, with the tip curved ventrad ( Fig. 16 d). Terminal apophysis short and longitudinally oriented ( Fig. 16 d).

Female (MACN-Ar 22725). Color in ethanol ( Figs 15 a–c) as in male. 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 0-0-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 I d 0-1, II p 1 d 0-1, III p 1 d 1-1, IV p 1 d 1-1 r 1; tibia I v 2-2-0, II p d1-d1 v 2-2 - 2ap, III p d1-1 d 1-1 r 1-1 v 2-2 -2ap, IV p d1-1 d 1-1 r d1- 1 v p1-p1-2ap; metatarsus I v 2-2-2ap, II p 1-0-2ap r 0- 0-1ap v 2-2 -1ap, III p 1-1-2ap r 1-1-2ap 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, enlarged anteriorly, copulatory openings surrounded by a rounded lightly sclerotised area ( Fig. 16 a). Vulva: head of spermatheca rounded, almost of the same length of the stalk. Vulval chamber rounded, behind to the base of spermathecae in dorsal view ( Fig. 16 b).

Measurements. Female, MACN-Ar 22725 (male, MACN-Ar 22756): TL 5.53 (5.80), CL 2.87 (3.27), CW 2.27 (2.27), CH 0.93 (1.13), AL 3.00 (2.53). Eyes: AME 0.13 (0.13), ALE 0.10 (0.10), PME 0.23 (0.27), PLE 0.17 (0.20). Row of eyes: AER 0.60 (0.57), PME 0.67 (0.63), PLE 0.93 (0.83). Sternum (length/width) 1.67/1.33 (1.70/ 1.33). Labium (length/width) 0.50/0.40 (0.43/0.37). Legs: length of segments (femur + patella/tibia + metatarsus + tarsus = total length): I 2.13 + 2.60 + 1.87 + 0.93 = 7.53, II 1.93 + 2.13 + 1.60 + 0.87 = 6.53, III 1.73 + 2.07 + 1.73 + 0.87 = 6.40, IV 2,47 + 3,27 + 2,60 + 1,0 7 = 9,41 (I 2.47 + 3.07 + 2.07 + 1.00 = 8.61, II 2.33 + 2.73 + 1.93 + 0.93 = 7.92, III 2.27 + 2.60 + 2.20 + 0.93 = 8.00, IV 2.93 + 3.67 + 3.60 + 1.13 = 11.33).

Variation. Females (males) (range, mean ± s.d.): TL 5.53 – 6.60, 6.08 ± 0.56; CL 2.87 – 3.33, 3.08 ± 0.22; CW 2.00 – 2.40, 2.20 ± 0.20 n = 4; (TL 5.07 – 6.27, 5.74 ± 0.42; CL 2.67 – 3.33, 3.07 ± 0.20; CW 2.00 – 2.47, 2.22 ± 0.17 n = 8).

Distribution. Eastern central Argentina (northeastern Buenos Aires Province, Buenos Aires city and southern Entre Rios) ( Fig. 26 ).

Figures

FIGURE 1. Live specimens; a Agalenocosa pirity sp. nov., from Vuelta de Obligado. b Agalenocosa punctata Mello-Leitão, from Isla Tres Bocas (photos: Cristian J. Grismado). c Entre Ríos, Predelta National Park, type locality of Agalenocosa pirity sp. nov..

FIGURE 8. Tibiae of male palps of Agalenocosa Mello-Leitão species, ventral view. a A. velox (Keyserling); b A. luteonigra Mello-Leitão; c A. tricuspidata (Tullgren); d A. punctata Mello-Leitão; e A. pirity sp. nov.; f A. grismadoi sp. nov. Scale bars, 0.20 mm.

FIGURE 15. Agalenocosa punctata Mello-Leitão, habitus. a – c female; d – f male; a, d dorsal; b, e lateral; c, f ventral. Scale bars 2.00 mm.

FIGURE 16. Agalenocosa punctata Mello-Leitão, genitalia. a epigyne ventral; b vulva, cleared, dorsal; c – e male palp, c prolateral, d ventral, e retrolateral. Scale bars, a, c – e 0.20 mm, b 0.10 mm. Abbreviations: BS base of spermatheca, DB dorsal branch of embolic division, dbMA dorsal branch of median apophysis, EH embolic hood, EP epigynal plate, FD fertilization ducts, HS head of the spermatheca, MA median apophysis, PTL prolateral tegular lobe, SS stalk of spermatheca, ST sub tegulum, T tegulum, TA terminal apophysis, VB ventral branch of embolic division, vbMA ventral branch of median apophysis.

FIGURE 26. Geographic distribution of A. punctata Mello-Leitão (black stars) and A. gentilis Mello-Leitão (blue triangles).