Cyrtognatha leviorum, 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 : 47

Cyrtognatha leviorum , new species Figure 17

TYPE: Male holotype from Panama, Chiriquí Province, Boquete, above 1200–1900 m. 11.vii.1983, H. and L. Levi ( MCZ 67465).

ETYMOLOGY: Named after Herbert W. Levi and Lorna R. Levi, collectors of the only known specimen of this species and in recognition of H. W. Levi’s work on the systematics of Neotropical araneoids. The species name is a noun in the genitive case.

DIAGNOSIS: This species is very similar to its closest relative, C. bella . It can be easily distinguished from C. bella by the morphology of the embolus, which in C. leviorum has smaller dilatation ventrally and carries a small metine embolic apophysis (fig. 17A). In C. bella the embolus does not have a metine embolic apophysis. The male chelicerae are also diagnostic: in C. bella they are more divergent with much larger outgrowth of the cheliceral fang (fig. 58E) than in C. leviorum (fig. 17E). Additional diagnostic characters are provided by the more rounded tip of the paracymbium and more pronounced curvature of the embolus (in prolateral view) in C. leviorum .

DESCRIPTION: Male (holotype). Habitus as in figure 17D–G. Carapace yellowish with a well-marked fovea. Dorsally with darker brownish band medially. Abdomen cylindrical with well-developed proximal tubercle but with strongly reduced distal one. Abdomen yellowish in color with guanine spots concentrated dorsally. Total length 4.12. Cephalothorax 1.87 long, 1.32 wide, 0.87 high. Abdomen 2.25 long, 1.25 wide, 1.00 high. Sternum yellowish, 0.95 long, 0.90 wide. Clypeus height 1.36 times one AME diameter. Eyes nearly the same size. AME diameter 0.11. Distance between AME slightly smaller than their diameter; AME–ALE distance twice one AME diameter. Distance between PME equal to their diameter, and PME– AME distance ca. 1.5 AME diameters. Chelicerae (fig. 17E) brownish, moderately divergent with a well-developed dorsal tooth. The dorsal tooth is placed near the fang articulation (fig. 17E), carries a bunch of macrosetae, and is curved at the tip prolaterally. Cheliceral fang with very well-developed outgrowth but without very distinctive curvature before and after it. Femur I 3.72, 1.98 times the length of the cephalothorax. Pedipalp as in figure 17A–C. Palpal tibia length 0.27, cymbium length 0.72.

Female. Unknown.

DISTRIBUTION: Known only from the type locality (fig. 5).