Gypogyna amazonica Ruiz, 2021

Ruiz, Gustavo R. S., Costa, Erika L. S. & Bustamante, Abel A., 2021, Revision of Gypogyna Simon, 1900 (Araneae: Salticidae), Zootaxa 5057 (2), pp. 241-259 : 248-250

Gypogyna amazonica Ruiz , sp. nov.

Figs 45–46 , 63

Type material. Holotype: ♂ from Rio Tarumã-Mirim , Manaus, Amazonas, Brazil, 05.VIII.1979, J. Adis ( IBSP 67104 ).

Etymology. The epithet is to be treated as a Latin adjective and refers to the Amazon forest, where the holotype was found.

Diagnosis. Among the three species, G. amazonica sp. nov. is more similar to G. forceps . In these two, male chelicerae extend almost parallelly forward (they are more divergent in G. mexicana sp. nov.), and the distal pair of promarginal teeth (DPT) is located near the articulation of the fang (as in Fig. 51 ) (DPT is more basal in G. mexicana ; Fig. 52 ). Also, the abdomen in these two species does not have several pairs of dorsal dark spots, as in G. mexicana ( Figs 53–56 ). The male of G. amazonica can be distinguished from that of G. forceps by the clear abdomen, without the typical color pattern of G. forceps , and by having a narrower cymbium (middle portion of cymbium is much wider in G. forceps ). The female of G. amazonica is unknown.

Description. Male (holotype). Total length: 4.60. Carapace orange, 2.27 long, 1.54 wide, 0.97 high; intestinal diverticula can be seen within cephalic area through translucent cuticle. Ocular quadrangle 1.15 long. Anterior eye row 1.24 wide and posterior 1.19 wide. Labium, endites and sternum clear. Chelicera orange, as described to G. forceps . Palp as described for the genus ( Figs 45–46 ). Legs 4312, yellow. Length: I 3.99 (1.32 + 1.15 + 1.52), II 3.73 (1.09 + 1.49 + 1.15), III 4.20 (1.45 + 1.61 + 1.14), IV 4.46 (1.65 + 1.38 + 1.43). Abdomen entirely clear, only with a pair of light areas in the middle, almost giving the impression of a constriction, and a small dark spot over the anal tubercle. Spinnerets brown.

Female. Unknown.

Distribution. Known only from the type locality ( Fig. 63 ).

Figures

FIGURE 63. Distribution records of Gypogyna forceps Simon, 1900 (red circles) and G. amazonica Ruiz sp. nov. (blue pentagon). Yellow lines indicate country limits, while white lines indicate Brazilian states (names in italics).

FIGURES 45–50. Diagnostic structures in Gypogyna spp. 45–46 left male palp of G. amazonica Ruiz sp. nov. (45 ventral; 46 retrolateral); 47–48 left male palp of G. mexicana Ruiz & Bustamante sp. nov. (47 ventral; 48 retrolateral); 49 epigyne of G. mexicana, ventral; 50 same, cleared, dorsal.

FIGURES 51–52. Male chelicerae in Gypogyna spp. 51 G. forceps Simon, 1900, ventral (retrolateral); 52 G. mexicana, ventral. Abbreviations: DPT—distal prolateral tooth of chelicera; En—endite; fvb—fang ventral bump; L—labium; RDA—retrolateral distal apophysis of chelicera; RT—retrolateral tooth of chelicera; sPT—smaller prolateral tooth of chelicera.

FIGURES 53–56. Gypogyna mexicana Ruiz & Bustamante sp. nov., live specimens. 53–54 male holotype from Puerto Vallarta (Mexico) (53 dorsal; 54 frontal); 55–56 female from Estación de Biología Chamela (Mexico) (55 dorsal; 56 frontal) (W.P. Maddison 2015, under a Creative Commons Attribution 3.0 International license).