Cyrtognatha waorani, Dimitrov & Hormiga, 2009

Dimitrov, Dimitar & Hormiga, Gustavo, 2009, Revision And Cladistic Analysis Of The Orbweaving Spider Genus Cyrtognatha Keyserling, 1881 (Araneae, Tetragnathidae), Bulletin of the American Museum of Natural History 2009 (317), pp. 1-140 : 44

Cyrtognatha waorani , new species Figure 15

TYPE: Male holotype from Ecuador, Orellana, Reserva Étnica Waorani, Transect Ent. 1 km S. Onkone Gare Camp. 00 ° 39 9 25.7 0 S, 076 ° 27 9 10.8 0 W, elevation 216 m. 9.x.1994, T.L. Erwin et al., lot no. 915 ( USNM).

ETYMOLOGY: Named after the Waorani people, an indigenous tribe of the Ecuadorian Oriente in the Amazon region. The species name is to be treated as noun in apposition.

DIAGNOSIS: This species can be easily distinguished from similar congeners (namely, C. orphana ) by the very peculiar shape of the metine embolic apophysis (fig. 15A, C), which is widened and with a deep distal incision. Cyrtognatha orphana has a similarly shaped metine embolic apophysis, but its embolus has a smaller embolic membrane and is conspicuously bent (in ventral view) prolaterally. In C. morona the embolus has S curvature and its tip points apically (fig. 15A). The extensive membrane of the embolus and the shape of the basal apophysis of the conductor are also very useful for the identification of C. waorani (fig. 15A–C).

DESCRIPTION: Male (holotype). Habitus as in figure 15D–G. Carapace brown-yellowish with a well-marked fovea. Abdomen brownish with numerous guanine spots concentrat- ed dorsally and laterally. Dorsal tubercle extends caudally over the spinnerets and has darker bands. Total length 6.00. Cephalothorax 2.80 long, 1.90 wide, 1.36 high. Abdomen 3.26 long, 0.90 wide, 0.78 high. Sternum 0.93 long, 1.17 wide. Clypeus height 1.25 times one AME diameter. AME and PME almost the same size. AME diameter 0.13. Lateral eyes juxtaposed and slightly smaller than PME, distance between ALE and AME more than 1.5 AME diameters. Distance between AME slightly larger than their diameter. Distance between PME about two-thirds of their diameter. Chelicerae (fig. 15E) brownish, with very well-developed dorsal tooth close to the fang joint. Fang with very pronounced curvature and outgrowth over its retrolateral surface. Tip of the dorsal cheliceral tooth conspicuously curved; the rest of the cheliceral teeth rather small. Femur I 6.82, 2.4 times the length of the cephalothorax. Pedipalp as in figure 15A–C. Palpal tibia length 0.22; cymbium length 0.97.

Female. Unknown.

DISTRIBUTION: This species is known only from the type locality (fig. 5).