Platnickia bolson, Grismado & Platnick, 2008

Grismado, Cristian J. & Platnick, Norman I., 2008, Review of the Southern South American Spider Genus Platnickia (Araneae, Zodariidae), American Museum Novitates 3625 (1), pp. 1-20 : 18

publication ID 10.1206/615.1

persistent identifier

treatment provided by


scientific name

Platnickia bolson

new species

Platnickia bolson , new species

Figures 32, 33, 48–51, 70–74

TYPE: Male holotype taken in a pitfall trap in a cypress forest in the Reserva Forestal Loma del Medio, El Bolsón, Río Negro, Argentina (Feb. 2004; P. Sackmann), deposit- ed in MACN.

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Males resemble those of P. elegans in having a well-sclerotized tegular apophysis (figs. 70–72), but differ in having that apophysis thinner, slightly longer, and more sinuous, and in the tegular extension, which is proportionately longer; the retrolateral tibial apophysis is also more acute and projecting. Females can be distinguished by the transverse, rectangular median field of the epigynum, the shorter spermathecae, the closely spaced copulatory openings, and the long, thick copulatory ducts (figs. 73, 74).

MALE (holotype; figs. 32, 48, 49): Total length 4.25. Carapace 2.47 long, 1.62 wide. Femur 11 1.74 long. Eye sizes and interdistances: AME 0.06, ALE 0.07, PME 0.05, PLE 0.08; AME-AME 0.08, AME-ALE 0.03, PME-PME 0.12, PME-PLE 0.11, ALE-PLE 0.04. Carapace uniform dark brown, except for small lighter mark in front of fovea; legs yellowish, with distal podomeres slightly darker, bearing distal dark rings; chelicerae, endites, sternum dark brown; abdomen in poor condition (damaged by pitfall trap preservative), but apparently with markings similar to those of P. elegans . Leg spination: femora: I d1-1-1, p1(subap); II d1-1-1, p1(subap); III d0-0-0-1-1, dp0-0-1-1-1, dr0-0-1-1-1; IV d1-1-1, p1(subap), r1(subap); tibiae: I p1/0- 0-0; II vr1-1-0, p1/0-0-0; III v2-2-2(ap), dr1-1, dp1-1; IV vr0-1-1(ap), vp1-1-1(ap), dp1-0, dr1- 1; metatarsi: I v2(ap), p1(ap); II v2(ap), p1(ap); III v0-2-2(ap), p0-0-1(ap), r0-0-1(ap), dr0-1-1(ap), dp0-0-1(ap); IV vp1-1-1(ap), vr0- 1-1(ap), p1(ap), r1(ap), dp1(ap), dr0-1-1(ap); tarsi: III vp0-0-1-1, vr0-0-1-1-1; IV 1(subap), vr0-0-1-1. Palp as in figs 70–72.

FEMALE (El Bolsón; figs. 33, 50, 51): Total length 5.49. Carapace 2.36 long, 1.58 wide. Femur II 1.26 long. Eye sizes and interdistances: AME 0.10, ALE 0.10, PME 0.12, PLE 0.12; AME-AME 0.04, AME-ALE 0.02, PME-PME 0.12, PME-PLE 0.18, ALE-PLE 0.04. Carapace reddish brown, lighter in cephalic, postfoveal areas; endites, sternum dark brown; chelicerae orange brown; legs yellowish, with all podomeres apically darkened; abdomen as in P. elegans . Leg spination: femora: I d1-1-1, p1(subap); II d1-1-1, p1(subap); III d1(ap); IV d1-1-1; tibiae: I p1-0; II p0- 1, vp0-0-1(ap), vr1-1-1(ap); III v2-2-2(ap), p1- 1, r1-1; IV vp1-1-1(ap), vr0-1-1(ap), r1-1, d1(subprox); metatarsi: I v2(ap), p1(ap); II vr0-1-1(ap), vp1(ap), p1(ap); III rv0-0-1(ap), pv0-1-1(ap), v0-2-2(ap); IV v0-2-2-2(ap), p1(ap), r1(ap), dr0-1-1(ap), dp0-1-1(ap); tarsi: III vp0-0-1, vr0-0-1-1; IV vp0-1-1, vr0-0-1. Spermathecae with heads shorter than in P. elegans , copulatory openings more closely spaced (figs. 73, 74).

OTHER MATERIAL EXAMINED: CHILE: Región de los Lagos (X): Llanquihue : Río Blanco, Sector Chago, Puerto Montt , Jan. 30– Feb. 15, 1983 (G. Arriagada, MNHNS), 1♀ . ARGENTINA: Río Negro: same locality as holotype, Feb. 2002 (P. Sackmann, MACN), 23, Apr. 2002 (P. Sackman, MACN), 13 (paratype); El Bolsón, Oct. 26, 1961 (A. Kovacs, AMNH), 2♀ .

DISTRIBUTION: Southern Chile ( Llanquihue ) and adjacent Argentina (Río Negro, map 1).


Museo Argentino de Ciencias Naturales Bernardino Rivadavia


American Museum of Natural History