Monapia tandil Ramírez

Ramírez, Martín J., Ansaldi, María Julieta & Puglisi, Alejandro F., 2004, Description of the females of Oxysoma itambezinho Ramírez and Monapia tandil Ramírez, and their effects on the generic relationships of Gayennini (Araneae, Anyphaenidae, Amaurobioidinae), Zootaxa 668, pp. 1-8 : 7-8

Monapia tandil Ramírez

( Figs. 8–10 )

Monapia tandil Ramírez, 1999: 429 (male holotype from Tandil , Buenos Aires Province, Argentina, deposited in MACN 9583, re­examined); 2003: 248.

Note: The female was not collected together with a male, but was identified as M. tandil by its somatic resemblance (eyes and macrosetae patterns, body design), and because it was collected in the same area as the single male thus far known of this species.

Diagnosis: This species is closest to M. vittata . In both species, the AME are notably smaller than the ALE. The females are easily distinguished by the trapezoidal, large anteriorly elevated area of the epigynal median field, and by the anterior tranversal pocket with a single median lumen.

Description of female: Total length 7.45. Carapace length 3.00, width 2.30. Eyes, AME 0.08, ALE 0.14, PME 0.12, PLE 0.14. Chelicerae with three teeth on promargin, two on retromargin. Sternum length 1.58, width 1.18. Length of tibiae/metatarsus: I 3.60/1.70, II 2.80/1.38, III 2.05/0.86, IV 3.00/1.30. Spines: Leg I, femur, d 1­1­1, p 0­(d1­1), r 0­d1­ d1; tibia v 2­2 ­2, p and r d1­1; metatarsus v 2 bas, p and r 1­0, d0­p1­ 2. II = I. III, femur = I, tibia v 2­2 ­2, p and r d1­1, d r1­0­1­0, metatarsus v 2 ­p1­2, p and r d1­1­1, d 0­p1­ 2. IV, femur d1­1­1, p and r 0­d1­d1, patella r d1, tibia = III, metatarsus v 2­2 ­2, p and r d1­1­1, d 0­p1­2. Abdomen length 4.40, width 2.40, distance spiracle­epigastrium 3.70, spiraclespinnerets 0.60. Color: Light brown with brown pattern on carapace and abdomen ( Fig. 8 ). Legs with brown dots on coxae and femur; tibia, tarsus and metatarsus darker. Sternum light brown, venter light brown with dark lateral lines. Epigyne ( Figs. 8, 9 ) with large anterior transversal pouch, with unpaired median lumen. Anterior part of median field prominent, posterior part well depressed, containing the copulatory openings, covered by hardened secretion plug. Lateral lobes separated. Copulatory ducts thick, leading to spherical spermathecae.

Material examined: ARGENTINA: Buenos Aires Province: Tandil , Estancia Santa Marina, Barker , nr. Caverna Oscura, October 1999, Grupo Espeleológico Argentino (MACN­Ar 10506).

Figures

FIGURES 8 – 10. Female of Monapia tandil Ramírez. 8, body, dorsal view; 9, epigyne, ventral view; 10, cleared epigyne, dorsal view. (AB = accessory bulb [= “ head of spermatheca ”]; Apmf = anterior pouch of the median field; DP = " dictynoid " pore; FD = fertilization duct; PPmf = posterior pouch of the median field; S = spermatheca). Scales: 8 = 2 mm; 9 – 10 = 0.1 mm.