Otiothops atalaia Castro, Baptista, Grismado & Ramírez, 2015, sp. n.
Creators: name: Castro, Diogo
name: Baptista, Renner
name: Grismado, Cristian
name: Ramírez, Martín
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Palpimanidae
Otiothops
Otiothops atalaia

description: Otiothops atalaia sp. n.
(Figs 1–2)
Type material. Holotype male, Parque Nacional Municipal Fazenda Atalaia, 22°18’32”S, 42°00’07”W, Macaé, Rio de Janeiro, Brazil, 27 September 2009, Atlantic Rainforest, litter, elevation 45 m, V. Brandão, M. da Costa, G. Cardoso, A. Pérez, G. Marquez (MNRJ 06813). Paratypes: 2 females, same data as holotype except 29 September– 4 October 2009, pitfall trap (MNRJ 06814).
Other material examined. BRAZIL: Rio de Janeiro: Macaé: 1 male, Parque Nacional Municipal Fazenda Atalaia, 29 September – 4 October 2009, Atlantic Rainforest, pitfall trap, V. Brandão, M. da Costa, G. Cardoso, A. Pérez, G. Marquez (UFRJ MAC 2075).
Etymology. The specific name is a noun in apposition taken from the type locality.
Diagnosis. The male pedipalp is similar to that of Otiothops macleayi Banks, 1929 by the straight embolus which is branched at the tip (see Platnick 1975, figs 5–8), but can be distinguished by the longer, twisted branching filament, by the less salient embolar insertion on the bulb, and by the more inflated bulb, which is almost the same length as the cymbium (Figs 1 h–j, 2b–c). The female internal genitalia (Fig. 2 a) resemble those of O. goytacaz sp.
n. (Figs 3 d, 4a) by having an anteromedian projection, but differ by having a broader base to this projection, a wider sclerotized area with a ringed texture, and also by having two smaller anterodorsal diverticula (the left one apparently collapsed) arising from the median receptacles (Fig. 2 a).
Description. Male (holotype). Total length 4.27. Carapace 2.00 long, 1.28 wide. Femur I 1.33 long, 0.57 high. Posterior median eyes almost touching (Fig. 1 e). Paturon with inconspicuous lateral ridge. Sclerotized portions of body orange brown; abdominal scutum orange brown, unsclerotized portion of dorsal abdomen purplish brown with yellow dots, ventral abdomen lighter and almost uniformly yellowish brown (Fig. 1 e–g). Tarsi II–IV with claw tufts. Pedipalpal femur not thickened, tibia nearly cup-shaped and almost half palpal bulb size; embolus thin, slightly longer than cymbium, bearing a short membrane at its tip, with a branching twisted distal filament (Figs 1 h–j, 2b–c).
Female (paratype). Total length 4.10. Carapace 1.96 long, 1.35 wide. Femur I 1.48 long, 0.65 high. Eyes and chelicerae as in male. Cephalothorax lighter than male (Fig. 1 a–c). Abdominal scutum small, entire, less sclerotized than male, curved, with entire sclerite present behind epigastric furrow (postepigastric scutum) (Fig. 1 d), unsclerotized portion of abdomen as in male (Fig. 1 a–c). Tarsi II–IV with claw tufts. Internal genitalia (Fig. 2 a) composed of two large and globose median receptacles basally joined, each with anterodorsal diverticulum. In front of the vulva there is an anteriorly directed median structure (anteromedian projection), probably an apodeme; poreplates not seen (but absence not confirmed).
Distribution. Known only from the type locality.
description: Published as part of Castro, Diogo, Baptista, Renner, Grismado, Cristian & Ramírez, Martín, 2015, New species and records of Otiothopinae from the Southern Atlantic Rainforest, with notes on the claw tufts in Fernandezina Birabén (Araneae: Palpimanidae), pp. 465-478 in Zootaxa 4012 (3) on pages 466-468, DOI: 10.11646/zootaxa.4012.3.3, http://zenodo.org/record/241787