Otiothops puraquequara, Brescovit, Antonio D., Bonaldo, Alexandre B. & Barreiros, José Augusto P., 2007

Otiothops puraquequara View in CoL sp. nov.

( Figs. 6-11 View FIGURES 6 - 11 )

Type Material. Male holotype and female paratype from Estação Científica Ferreira Penna ( 01°42’30”S, 51°31’45”W), Floresta Nacional de Caxiuanã, Melgaço, Pará, Brazil, 2003, J.A.P. Barreiros ( MPEG 2471, 2468). Paratypes: 2 males ( MPEG 2469; IBSP 63597), 1 female ( IBSP 63598), same data as holotype.

Additional material examined. BRAZIL. Pará: 1 male, 2 females, 3 immatures ( MPEG 2465, 2466, 2470), Melgaço, Estação Científica Ferreira Penna ( 01°42’30”S, 51°31’45”W), FLONA Caxiuanã, Estação Científica Ferreira Penna.

Etymology. The specific name is a noun in apposition that refers to Igarapé (small river) Puraquequara , a Caxiuanã River tributary.

Diagnosis. Otiothops puraquequara sp. nov. belongs to the O. typicus group, composed of O. typicus ( Mello-Leitão, 1927) , O. inflatus Platnick, 1975 , O. hoeferi Brescovit & Bonaldo, 1993 and O. goloboffi Grismado, 1996 ( Platnick 1975; Brescovit & Bonaldo 1993; Grismado 1996), united by the highly inflated pedipalpal bulb and short, medially inserted embolus. Males of O. puraquequara differ from all species of this group by the medially grooved embolus ( Figs. 6–7 View FIGURES 6 - 11 ). Females resemble those of O. hoeferi (see Brescovit & Bonaldo1993, figs. 9–10) by the large, oval posterior extension of the receptaculum, but differ by the medially enlarged post-epigastric sclerite ( Fig. 8 View FIGURES 6 - 11 ) and by the posterior extension of the receptaculum being restricted to the epigastric scutum ( Figs. 9–10 View FIGURES 6 - 11 ).

Description. Male ( Holotype, MPEG 2471). Coloration as in O. curua sp. nov., except for the pedipalps yellow, endites orange, abdomen with anterior ring-shaped scutum reddish orange, spinnerets orange. Total length 3.80. Carapace 1.70 long, 1.20 wide. Femur I 1.30 long, 0.6 high. Cephalic area strongly elevated. Thoracic groove a deep, V-shaped pit. Eyes as in O. curua sp. nov. Cymbium with prolateral brush of black setae on its distal third.

Female ( Paratype, MPEG 2468). Coloration as in male, except pedipalps orange. Total length 5.70. Carapace 2.00 long, 1.50 wide. Femur I 1.30 long, 0.7 high. Cephalic area strongly elevated. Eyes as in male. Epigastric scutum with smooth posterior border ( Fig. 8 View FIGURES 6 - 11 ). Internal genitalia with two oval median receptacula, separated by half their diameter, not held by shorter pedicel; pore plate elongate and sinuous, with posterior wall of median receptaculum covered with small pores, and with short lateral copulatory ducts; uterus externus flat, forming rectangular plate situated below anteriorly directed, single, globose bursa ( Figs. 9-10 View FIGURES 6 - 11 ). Median tracheae and anterior spinneret entapophyses as in O. curua sp. nov. ( Fig. 11 View FIGURES 6 - 11 ).

Variation. Four males: total length 3.60–3.80; carapace length 1.70–1.90; femur I length 1.10–1.40. Three females: total length 4.20–5.70; carapace length 1.90–2.10; femur I length 1.20–1.40.

Distribution. Known only from the type locality.