Neoxyphinus macuna Moss & Ruiz, sp. nov.

Figs 6, 198–226; Map 4

Type material: Holotype: male from La Pedrera Quebrada el Ayo, La Pedrera, Amazonas, Colombia (01°35’N, 69°31’W), May 2002, J. Pinzon leg. (ICN, PBI _OON 44329). Paratype: one female from Lago Taraira bajo Rio Apaporis, Estación Biológica Caparú, Taraíra, Vaupés, Colombia (01°04’N, 69°29’W), 0 2 April 2004, J. Pinzón leg. (ICN, PBI _OON 44363).

Etymology. The specific name is a noun in apposition, referring to the indigenous tribe Macuna, which inhabited the type locality.

Diagnosis. Males resemble those of N. pure sp. nov. (Fig. 227), N. gregoblin (See Abrahim et al. 2012, figs 105, 108), N. petroglobin (See Abrahim et al. 2012, figs 185, 187) and N. boibumba (See Abrahim et al. 2012, figs 221, 224) by the combined presence of smooth carapace and denticles on the anterior portion of the abdominal dorsal scutum (Figs 201, 204). They differ from those of N. pure (Fig. 229), N. gregoblin (See Abrahim et al. 2012, fig. 105), and N. petroglobin (See Abrahim et al. 2012, fig. 184) by the absence of spikes (Fig. 201) and from those of N. boibumba (See Abrahim et al. 2012, fig. 231) by the presence of a pointed prolateral prong (Fig. 210). Females are recognized by the presence of abdominal dorsal denticles (Fig. 225) and by the book lung margins with rows of cuticular round projections (Fig. 226).

Description. Male (holotype): total length 2.57. Cephalothorax: carapace orange-brown, broadly oval, pars cephalica slightly elevated, posterolateral surface without spikes, surface and sides smooth; lateral margin without denticles (Fig. 199); posterior part with one pair of well-developed tubercles (Fig. 201); recurved set of setae on posterior surface with four small tubercles (Fig. 201). Clypeus margin slightly reborded, straight in front view, high (Fig. 200). Sternum as long as wide, orange-brown, surface smooth, without pits (Fig. 202). Chelicerae, endites and labium orange-brown (Fig. 202). Abdomen: book lung covers large and ovoid (Fig. 206). Dorsal scutum orangebrown, middle surface and sides smooth, anterior half with projecting denticles (Fig. 215). Epigastric and postepigastric scutum orange-brown (Fig. 205). Legs: pale orange. Leg spination: tibia I v4-4 -2; metatarsus I v2-2 - 0. Genitalia: epigastric region with sperm pore small and oval (Fig. 205). Palp proximal articles, bulb and cymbium pale orange. Embolus without prolateral lamella, with prolateral prong (Fig. 210), apical process well-developed (Figs 213–214).

Female (paratype): total length 2.84. Cephalothorax: carapace surface of elevated portion of pars cephalica and sides smooth (Figs 221, 222). Posterior part with one pair of well-developed tubercles (Fig. 222). Abdomen: book lung ornate with rows of cuticular projections (Fig. 226). Dorsal scutum middle surface and sides smooth, anterior half with projecting denticles (Fig. 225); groove connecting the posterior spiracles bearing pockets (Fig. 224). Legs spination: femur II v0-2-0; tibia I v4-4 -2; II v6-2 -0; metatarsus I v2-4 -0; II v4-2 -0. Genitalia: atrium narrow (Fig. 224).

Other material examined. COLOMBIA: Vaupés: 1♀, 3♂, Taraira, Lago Taraira, bajo Río Apaporis, Estación Biológica Caparú (01°04’N, 69°29’W), 0 2 April 2004, J. Pinzon leg. (ICN, PBI _OON 40464); 1♀ (ICN, PBI _OON 44359).

Distribution. Known from Vaupés and Amazonas departments in Colombia.