Chrysometa yanomami, Nogueira, André A., Pena-Barbosa, João P. P., Venticinque, Eduardo M. & Brescovit, Antonio D., 2011

Nogueira, André A., Pena-Barbosa, João P. P., Venticinque, Eduardo M. & Brescovit, Antonio D., 2011, The spider genus Chrysometa (Araneae, Tetragnathidae) from the Pico da Neblina and Serra do Tapirapecó mountains (Amazonas, Brazil): new species, new records, diversity and distribution along two altitudinal gradients, Zootaxa 2772, pp. 33-51 : 42-43

Chrysometa yanomami new species

Figures 6D–F

Type material. Holotype: Female from Pico da Neblina (2,000 m), São Gabriel da Cachoeira, (00°46'N 66º00'W), Amazonas, Brazil, X.2007, A.A. Nogueira et al., coll. (INPA-AR 6140).

Paratype: two females from the same locality and date (INPA-AR 6141 (1 female); IBSP 160473 (1 female )).

Etymology. The specific epithet, a noun in apposition, is a tribute to the Yanomami people since the places sampled in our expeditions are located on the Yanomami Indigenous Land, and in gratitude for the help received in the field from some members of the tribe.

Diagnosis. Females of C. yanomami differ from all other species of the genus by the “T”-shaped median plate on posterior view ( Fig. 6E ). Females of C. yanomami are similar to C. satulla (Keyserling) Levi, 1986 , figs.: 175– 179 and also similar to C. machala Levi, 1986 , figs.: 515–518.

Description. Male. Unknown.

Female (holotype). Carapace yellow, with a single black spot at the cephalic region; Sternum, chelicerae, labium and endites brown. Legs yellow. Dorsum of the abdomen grey, with some white spots. Venter grey, with two longitudinal line of white spots. Spinnerets grey. Total length 3.6; Carapace 1.3 long, 1.0 wide. Leg I length: femur 2.1; patella + tibia I 2.4; metatarsus 1.9; tarsus 0.4. Patella + tibia II 1.6; III 0.5; IV 1. 1. Epigynum: Median plate vessel shaped, with posterior region membranous and septum enlarged ( Fig. 6D ); copulatory openings circular ( Fig. 6D ); lateral plates with lateral membranes ( Fig. 6E ). Internally with copulatory ducts enlarged and apically coiled, with spermathecae right above, on dorsal view ( Fig. 6F ).

Distribution. Only known from the type locality.

Figures

FIGURES 6 A – I. Chrysometa spp. A – C. Chrysometa lomanhungae n. sp. A. Epigynum, ventral view. B. Same, posterior view. C. Same, dorsal view. D – F. Chrysometa yanomami n. sp. D. Epigynum, ventral view. E. Same, posterior view. F. Same, dorsal view. G – I. Chrysometa santosi n. sp. G. Epigynum, ventral view. H. Same, posterior view. I. Same, dorsal view. Scale bars: A – C, 0. 1 mm; D – F, 0. 1 mm; G – I, 0. 3 mm.