Otiothops curua Brescovit, Bonaldo & Barreiros, 2007, sp. nov.
Creators: name: Brescovit, Antonio D.
name: Bonaldo, Alexandre B.
name: Barreiros, José Augusto P.
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Palpimanidae
Otiothops
Otiothops curua

description: Otiothops curua sp. nov. (Figs. 1–5)
Type material. Male holotype and female allotype from Estação Científica Ferreira Penna (01º46’63.6”S 51º25’44.8”W), Floresta Nacional de Caxiuanã, Melgaço, Pará, Brazil, 08.VIII.2003, J.A.P. Barreiros (MPEG 2502, 2475). Paratypes: 1 male and 1 female (MPEG 2501, 2472), same data as holotype; 1 male and 1 female (IBSP 63599, 63600), same data as holotype.
Additional material examine d. BRAZIL. Pará: 4 males and 2 females (IBSP 63601-63603), 3 males and 4 females (MPEG 2473-2474, 2476-2479, 2500), Melgaço, Floresta Nacional de Caxiuanã, Estação Científica Ferreira Penna, Melgaço (01º46’63.6”S 51º25’44.8”W); 1 male (MPEG 2994), Igarapé Caquajó, Portel (Parcela PPBio, 01º57’38.9”S, 51º36’45.3”W), 08-13.V.2005, J. A. P. Barreiros & D. F. Candiani.
Etymology. The specific name is a noun in apposition that refers to Igarapé (small river) Curuá, a Caxiuanã River tributary.
Diagnosis. Otiothops curua sp. nov. differs from all other species of Otiothops except O. recurvus Platnick, by the long and slender embolus, twisted around the pedipalpal bulb (Figs.1–2) and by the presence of a posteriorly directed, unpaired posterior extension of the median recpetacula (= spermathecae in Platnick, 1976, figs. 4–5) (Fig. 3). Differs from O. recurvus by the shorter, gently curved embolus of the male pedipalp (Figs. 1–2) and by the globose bursa and larger, oval receptaculum of the female genitalia (Figs. 4–5).
Description. Male (Holotype, MPEG 2502): Carapace and chelicerae reddish orange, thoracic groove dark, labium, sternum, pedipalps and leg I orange. Remaining legs yellow. Abdomen dorsally dark, ventrally pale gray, with anterior ring-shaped scutum orange. Total length 3.50. Carapace 1.70 long, 1.30 wide. Femur I 1.10 long, 0.5 high. Cephalic area strongly elevated. Thoracic groove a deep, V-shaped pit. Anterior median eyes largest, circular, dark. Anterior and posterior lateral eyes small, light. Posterior median eyes contiguous, opalescent and irregularly triangular. Embolus curved at its tip (Fig. 2).
Female (Paratype, MPEG 2475): Coloration as in male, except legs II–IV yellowish and abdomen ventrally darker. Total length 4.60. Carapace 2.10 long, 1.50 wide. Femur I 1.30 long, 0.6 high. Cephalic area strongly elevated. Thoracic groove and eyes as in male. Epigastric scutum posteriorly sulcated, with post-epigastric plate club shaped, widely separated (Fig. 3). Internal genitalia with anterior extension of median receptaculum held by distal area of long sclerites of pedicel (Fig. 4); inconspicuous pore plate, situated in depression, with posterior wall covered with very tiny pores, and with short lateral copulatory ducts; uterus externus flat, rectangular, anteriorly directed, situated below pair of bursa separated by they diameter (Fig. 5).
Median tracheae similar to those of O. atlanticus (see Platnick et al., 1999, fig. 49), represented only by entapophyses, not fused to each other; 4–5 lateral tracheae on each side, not bifurcating. Anterior spinneret entapophyses partially fused at their bases.
Variation. Ten males: total length 3.20-3.80; carapace length 1.60–1.80; femur I length 1.00–1.20. Ten females: total length 4.30–5.20; carapace length 1.80–2.20; femur I length 1.10–1.30. Distribution. Known only from the type locality.
description: Published as part of Brescovit, Antonio D., Bonaldo, Alexandre B. & Barreiros, José Augusto P., 2007, Two new species of the spider genus Otiothops MacLeay (Araneae: Palpimanidae) from Caxiuanã National Forest, Pará, Brazil, pp. 59-66 in Zootaxa 1545 on pages 60-62, DOI: 10.5281/zenodo.177970