Cyrtognatha bella, Petrunkevitch, 1911

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 : 92-94

Cyrtognatha bella (O. P.- Cambridge, 1896) Figure 58

Agriognatha bella O. P.- Cambridge, 1896: 213, pl. 28, fig. 7.

Cyrtognatha bella Petrunkevitch, 1911: 335 .

TYPE: Male holotype from Costa Rica, no collector or date on the label ( BMNH 1905.4 . 28.2229; examined) .

DIAGNOSIS: Cyrtognatha bella shares numerous similarities with the closely related C. leviorum , but it can be easily distinguished from the latter by the membranous basal apophysis of the conductor and the absence of metine embolic apophysis (fig. 58A, B). Additionally, the male chelicerae of C. bella (fig. 58E) are much more divergent than those of C. leviorum .

DESCRIPTION: Male (holotype). Habitus as in figure 58D–G. Carapace yellow-brownish with a well-marked fovea. Abdomen elongated, yellowish, and with guanine spots concentrated dorsolaterally. Proximal and dorsal tubercle very small. Sternum yellowish. Labium and basal part of the endites darker with brownish tones. Sternum 0.92 long, 0.88 wide. Total length 4.57. Cephalothorax 2.00 long, 1.37 wide, 1.12 high. Abdomen 2.57 long, 1.25 wide, 1.25 high. Chelicerae (fig. 58E) dark brown, strong, and widely divergent. Cheliceral teeth very robust; dorsal tooth well developed and curved prolaterally. Cheliceral fang with large outgrowth. Clypeus 1.5 times one AME diameter. AME diameter 0.10. Eyes nearly the same size. Lateral eyes on a welldeveloped elevations. Distance between AME equal to their diameter; AME–ALE distance more than twice the AME diameter. Distance between PME equal to their diameter. Femur I 3.67, 1.83 times the length of the cephalothorax. Pedipalp as in figure 58A–C. Palpal tibia length 0.30; cymbium length 0.88.

Female. Unknown.

DISTRIBUTION: Costa Rica (fig. 5).

ADDITIONAL MATERIAL EXAMINED: Other material: Costa Rica, 1920, P. Serra, 1 male (MNHN 24871).

Cyrtognatha lepida (O. P.- Cambridge, 1889)