Aglaoctenus puyen sp. nov.

(Figs 5–6, 18 a, 19a, 20)

Type material. Female holotype from Argentina: Neuquén: San Martín de los Andes, Cerro Chapelco (ca. S 40.223611° W 71.288889° -+ 2140 m), II.1961, Galiano, M. E. (MACN-Ar 5319; temporary preparation LNP- 00044) and female paratype with the same data (MACN-Ar 20301).

Other material examined. ARGENTINA: Río Negro: Cerro Catedral, Laguna Toncek (ca. S 41.199722° W 71.485833° -+ 2085 m), 13.I.1964, 1 female (MACN-Ar 24099; temporary preparations LNP-00041 and LNP- 00608).

Diagnosis. Females of A. puyen sp. nov. can be distinguished from other species of Aglaoctenus by the wide marginal light brown bands in the carapace (Fig. 5 a), and by the epigyne that has a wide longitudinal septum, similar to A. oblongus (Fig. 13 a) but without well developed lateral projections (Fig. 6 a).

Description. Female (holotype). Colour in ethanol (Fig. 5, 19 a): carapace reddish-brown, covered by dark setae; wide, light brown marginal bands, enhanced by white setae. Chelicerae, endites and labium dark brown. Sternum and coxae brown, femora brown with light areas; patellae, tibiae, metatarsi and tarsi brown. Scopulae dense from distal ventral half of tibiae trough tarsi. Abdomen dorsally reddish-brown, with two pairs of anterior white spots, followed by a third pair of spots united by a line of white setae; ventrally light brown. Epigyne (female MACN-Ar 24099 dissected) (Fig. 6 a), median septum wide, without lateral projections, covered by plumose setae. Internal genitalia, (Figs 6 b, 18a) spermatheca with long and twisted stalk, head of spermatheca with small projections, vulval chamber semi-oval. Fertilization ducts small and membranous, connected to the base of spermatheca at its posterior side.

TL 21.42, CL 11.44, CW 8.51, CH 3.06. Eyes: AME 0.33, ALE 0.25, PME 0.73, PLE 0.60, POQ length 1.13, POQ posterior width 2.47, POQ anterior width 0.73. Anterior eye row slightly procurved, ALE in small tubercles (Fig. 19 a). Chelicerae: 4.67 length, three promarginal teeth, the median largest; retromargin with three equal equidistant teeth. Abdomen: length 9.98, width 6.92. Anterior lateral spinnerets conical, two-segmented, distal segment short, truncated. Legs: length of segments (femur + patella/tibia + metatarsus + tarsus = total length): pedipalp 3.99 + 2.79 + - + 3.86 = 10.64, I 8.38 + 11.70 + 7.45 + 4.12 = 31.65, II 8.25 + 11.17 + 7.58 + 3.99 = 30.99, III 7.98 + 9.98 + 7.45 + 3.72 = 29.13, IV 9.18 + 11.44 + 9.04 + 4.66 = 34.32. Leg formula 4123. Spination pattern: femur I p d1-1-d1 d 1-1, II p d1-0-d1 d 1-1, 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-d1ap; patella III p 1 r 1, IV p 1 r 1; tibia I p 0-0- v1 r 0-0-v1 v 2-2 -2ap, II p 1-0- v1 r 1-0-v1 v 2-2 -2ap, III p 1-0- v1 r 1-0-v 1 v p1- 2-2ap, IV p 1-0- v1 r 1-0-v1 v 2-2 -2ap; metatarsus I p 0-0-1 r 0-0-1 v 2-2 -1ap, II p 0-1-1 r 0-1-1 v 2-2 -1ap, III p d1-1-2 r d1-1-2 v 2-2 -1ap, IV p d1-d1-2ap r d1-1-2ap v r1-p1-r1-1ap.

Male. Unknown.

Variation. Range, mean ± SD. TL 19.82 – 21.55, 20.93 ± 0.96; CL 9.98 – 11.44, 10.95 ± 0.84; CW 8.38 – 8.65, 8.51 ± 0.13; TCR 1.34 – 1.37, 1.35 ± 0.02; n = 3.

Etymology. The specific name is a noun in apposition after the goddess of the Moon in the Mapuche language.

Distribution. Know only from two records in temperate Andean forest localities in Neuquén and Río Negro provinces (Fig. 20).