Amphidraus mysticetus, Ruiz, 2017

Ruiz, Gustavo R. S., 2017, Ten new species of Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini) and three new combinations, Zootaxa 4312 (3), pp. 401-437 : 404-408

publication ID

https://doi.org/10.11646/zootaxa.4312.3.1

publication LSID

lsid:zoobank.org:pub:304D1493-B681-4215-B1F9-C1911B70087B

DOI

https://doi.org/10.5281/zenodo.6044745

persistent identifier

https://treatment.plazi.org/id/26058799-FF9C-FF97-E9AB-F9BCFC6CFDE8

treatment provided by

Plazi

scientific name

Amphidraus mysticetus
status

sp. nov.

Amphidraus mysticetus sp. nov.

Figs 1–4 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4

Type material. Holotype: ♂ from Centro de Treinamento em Manejo Floresta Roberto Bauch, Instituto Floresta Tropical [03°27’S, 48°35’W], Paragominas, Pará, Brazil, 2015 GoogleMaps , G.R.S. Ruiz leg. ( MPEG 32684 View Materials ). Paratypes: 1♂ from Mocambo [01°26'13.3"S, 48°25'14.9"W], Belém , Pará, Brazil, 10.VII.2003 GoogleMaps , J.A.P. Barreiros & D.R. Santos leg. ( IBSP 211841 View Materials ); 1♀ from Tailândia, 02°36’04.2”S, 48°44’53.1”W, Pará, Brazil, 18.VI.2016 GoogleMaps , G.R.S. Ruiz leg. (MPEG 32692).

Etymology. The species epithet, to be treated as a Latin noun in apposition, refers to the conformation of the RTA and RvTA bearing thick setae, resembling an open mouthed whale with the baleen plates hanging from the upper maxilla (RvTA).

Diagnosis. The embolic disc (with long dPED of rounded tip, prolaterally projected and short vPED ventrally projected; Fig. 4 View FIGURE 4 C, 6C) and pattern of scales on the carapace of A. mysticetus sp. nov. ( Figs 1 View FIGURE 1 A, 2A, 2C) are similar to those of A. caxiuanan sp. nov. ( Fig. 5 View FIGURE 5 A). However, A. mysticetus sp. nov. differs from this species in having the RvTA with a triangular tip ( Fig. 4 View FIGURE 4 D), the RTA with the tip prolaterally curved over the cymbium ( Fig. 4 View FIGURE 4 B), and by the presence of enlarged, distal retrolateral setae on the tibia ( Figs 3 View FIGURE 3 C, 3D, 4D), while A. caxiuanan sp. nov. has a rounded RvTA ( Fig. 6 View FIGURE 6 D), erect RTA ( Fig. 6 View FIGURE 6 B) and no enlarged setae. The female of A. mysticetus differs from those of the remaining species of the genus in having the copulatory openings close to the border of the epigyne ( Figs 4 View FIGURE 4 E–F).

Description. Male holotype ( MPEG 32684). Total length: 2.17. Carapace with a longitudinal stripe of white scales on cephalic region and tufts of brown scales laterally ( Figs 1 View FIGURE 1 A, 2A, 2C), 1.22 long, 0.84 wide and 0.55 high. Ocular quadrangle 0.67 long. Anterior eye row 0.87 wide, posterior 0.76 wide. Legs 4312. Length of leg: I 1.81 (0.57 + 0.67 + 0.57); II 1.73 (0.55 + 0.61 + 0.57); III 2.09 (0.65 + 0.68 + 0.76); IV 2.28 (0.65 + 0.76 + 0.87). Palp ( Figs 3 View FIGURE 3 A–D, 4A–D): embolic filament short, about one third the length of the straight, sclerotized portion ( Fig. 3 View FIGURE 3 B, 4C). Color in alcohol: thoracic area brown and cephalic area black; abdomen dorsally brown and variegated; ventrally pale; legs light brown ( Figs 2 View FIGURE 2 A, 2B).

Female paratype ( MPEG 32692). Total length: 2.51. Carapace with scale pattern as in male ( Figs 2 View FIGURE 2 C, 2D), 1.48 long, 0.87 wide and 0.57 high. Ocular quadrangle 0.57 long. Anterior eye row 0.91 wide, posterior 0.80 wide. Legs: 4312; Length of leg I 1.98 (0.65 + 0.76 + 0.57); II 1.85 (0.61 + 0.67 + 0.57); III 2.20 (0.68 + 0.72 + 0.80); IV 2.47 (0.68 + 0.84 + 0.95). Epigyne ( Figs 4 View FIGURE 4 E, 4F) with glands in the copulatory ducts near the copulatory openings. Color in alcohol as in male ( Figs 2 View FIGURE 2 C, 2D).

Distribution. Known only from the type locality ( Brazil, Pará) ( Fig. 32 View FIGURE 32 ).

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Amphidraus