Orchestina yanayacu Izquierdo, 2017

Duperre, Nadine & Tapia, Elicio, 2017, The goblin spiders (Araneae, Oonopidae) of the OTONGA Nature Reserve in Ecuador, with the description of seven new species, Evolutionary Systematics 1 (1), pp. 87-109 : 98-100

Orchestina yanayacu Izquierdo, 2017 Male, Figs 28, 29

New records.

Cotopaxi Province: OTONGA Biological Reserve (00.41433°S, 79.0035°W) 1888m, 15.x.2014, 1♂3♀, moss in trees 0.5-3m from ground, E. Tapia, N. Dupérré (ZMH); 13-15.xi.2015, sifting litter from epiphytes base, Berlese, 4♀, E. Tapia, N. Dupérré (ZMH).

Diagnosis.

Male are easily recognized by their elongated chelicerae (Fig. 28) and the male palpal bulb with bi-pointed of embolus (Fig. 29).

Description.

Male. Total length: 1.4; carapace length: 0.60; carapace width: 0.5.

COLORATION: Carapace light yellow, clypeus brown; chelicerae brown; sternum and endites light yellow; labium light brown; abdomen with indistinct gray pattern; legs light yellow.

CEPHALOTHORAX: Carapace ovoid in dorsal view, smooth; pars cephalica flat, pars thoracica sloping gradually. Clypeus low (1x PME), margin unmodified, sloping forward. Sternum as wide as long. Labium rectangular. Endites elongated. Chelicerae straight, long, without teeth (Fig. 28). EYES: Six, well developed, PME largest; all oval; posterior eye row recurved from above; ALE separated by PME, ALE-PLE touching, PME touching throughout most of their length, ALE-PME touching (Fig. 28). ABDOMEN: Ovoid, soft without scutum. LEGS: Femur IV enlarged; otherwise without modifications or spines. LEGS: leg formula 1243. GENITALIA: Palpal tibia enlarged. Cymbium oval. Bulb oval tapering apically. Sperm duct spiraled with several loops. Embolus dark, sharply bi-pointed, with small ventral apophysis (Fig. 29).

Natural history.

Found in mosses and epiphytes.

Distribution.

Ecuador: Napo and Cotopaxi Provinces.

Note.

Male and female a tentatively match as they were found in the same extraction sample, however on several occasions we found up to three Orchestina species in the same sample.