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

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, Zootaxa 1545, pp. 59-66 : 62

Otiothops puraquequara sp. nov.

( Figs. 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 ). 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 ) and by the posterior extension of the receptaculum being restricted to the epigastric scutum ( Figs. 9–10 ).

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 ). 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 ). Median tracheae and anterior spinneret entapophyses as in O. curua sp. nov. ( Fig. 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.

Figures

FIGURES 6 - 11. Otiothops puraquequara sp. nov., male (MPEG 2471) and female (MPEG 2470) from Caxiuanã National Forest, Pará, Brazil. 6 - 7 Male left pedipalp (6 ventral, 7 retrolateral). 8 - 10. Female epigyne (8 ventral, 9 dorsal, 10 lateral). 11. Tracheae and base of spinnerets, dorsal. Abbreviations: B, bursa; BL, book lung; EF, epigastric furrow; LCD, lateral copulatory duct; LT, lateral tracheae; MR, median receptaculum; MT, median tracheae; P, pedicelum; PE, posterior extension of bursa; PP, pore plate; UE, uterus externus. Scale bars: 0.5 mm.