Amphidraus loxodontillus

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: 429

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Amphidraus loxodontillus

sp. nov.

Amphidraus loxodontillus  sp. nov.

Figs 25–26View FIGURE 25View FIGURE 26

Type material. Holotype: ♂ from Igapó Tarumã-Mirim [03°00’49.0”S, 60°10’33.5”W], Manaus, Amazonas, Brazil, 8.X.1987, unknown leg. (deposited in INPA).GoogleMaps 

Etymology. Epithet to be treated as a compound Latin noun (loxodonta, the African elephant + the alternative suffix -illus to create the diminutive), in allusion of the shape of the embolic disc and embolus, which, seen upside down, create the image of a young elephant with large ear (the disc) and long trunk (the embolus).

Diagnosis. The embolic disc and embolus of A. loxodontillus  sp. nov. are similar to those A. semicanus  , with a rounded dPED ( Fig. 26View FIGURE 26 C). However, A. loxodontillus  sp. nov. differs from this species in having a small-sized embolus apical filament ( Fig. 26View FIGURE 26 C), while in A. semicanus  it is very long and spiralled (see Galiano 1963: lám. XXVII, figs 15–16). In addition, the male palpal tibia of A. loxodontillus  sp. nov. has two apophyses, while it has a single, wide apophysis in A. semicanus  ( Fig. 26View FIGURE 26 D; see Galiano 1963: lám. XXVII, fig. 15).

Description. Male (deposited in INPA). Total length: 2.51. Carapace 1.29 long, 0.84 wide and 0.53 high. Ocular quadrangle 0.65 long. Anterior eye row 0.87 wide, posterior 0.76 wide. Legs: 4312. Length of leg I 1.90 (0.61 + 0.72 + 0.57); II 1.86 (0.65 + 0.68 + 0.53); III 2.11 (0.70 + 0.65 + 0.76); IV 2.47 (0.76 + 0.80 + 0.91). Palp ( Figs 26View FIGURE 26 A –D): femur with poorly developed distal ventral depression; embolic filament short, slightly longer than half the length of the straight, sclerotized portion. Color in alcohol: thoracic area dark brown and cephalic area black; abdomen dorsally brown and variegated; ventrally dark brown; legs brown ( Figs. 25View FIGURE 25 A –B).

Female. Unknown.

Distribution. Known only from the type locality ( Brazil, Amazonas) ( Fig. 29View FIGURE 29).

Misplaced species. The type species of Nebridia  ( N. semicana Simon, 1902  ) was transferred to Amphidraus  by Zhang & Maddison (2015). Consequently, Nebridia  was synonymized with Amphidraus  . In addition to the type species, Amphidraus  currently includes three other species transferred from Nebridia  , namely A. manni  , A. mendicus  and A. parvus  , whose morphology did not correspond to that of true Amphidraus  and are discussed below.


Instituto Nacional de Pesquisas da Amazonia