Amphidraus pulvinus Ruiz 2017, sp. nov.
Creators
Description
Amphidraus pulvinus sp. nov.
Figs 7–8
Type material. Holotype: ♂ from Juruti, 02°30'27.4"S, 56°10'39.5"W, Pará, Brazil, 18–23.II.2011, B.V.B. Rodrigues leg. (MPEG 32687).
Etymology. A Latin noun meaning pillow, in reference to the modified RTA.
Diagnosis. The embolic disc and embolus of A. pulvinus sp. nov. are similar to those of A. argentinensis: the short dPED points prolaterally and the vPED points retrolaterally. However, the vPED of A. pulvinus sp. nov. arises from prolateral border of the embolic disc (Fig. 8 C), while in A. argentinensis it arises from the middle of the distal portion of the disc (see Galiano 1997: fig. 10). In addition, A. pulvinus sp. nov. has RvTA and ITA bladeshaped, and a RTA linked to a pillow-like membrane (black arrows in Figs 8 B, 8D), whereas in A. argentinensis the RvTA is trapezoidal with three apical teeth, and both the ITA and the pillow-like membrane are absent (see Galiano 1997: figs 8, 11). Amphidraus complexus also has the pillow-like membrane, but differs from A. pulvinus sp. nov. in having one less projection in the embolic disc and a different shape of the tibial apophyses (see Zhang & Maddison, 2015: figs 211, 212).
Description. Male holotype (MPEG 32687). Total length: 2.55. Carapace 1.25 long, 0.84 wide and 0.65 high. Ocular quadrangle 0.67 long. Anterior eye row 0.87 wide, posterior 0.72 wide. Legs: 431 = 2. Length of leg I 1.90 (0.57 + 0.68 + 0.65); II 1.90 (0.57 + 0.68 + 0.65); III 2.47 (0.72 + 0.84 + 0.91); IV 2.62 (0.76 + 0.87 + 0.99). Palp (Figs 8 A–D): cymbium with a proximal, retrolateral depression, where the pillow-like membrane of tibia fits (Fig. 8 D); tegulum with slight RSDL and tegular lobe prolaterally curved (Fig. 8 C); embolic filament very short, less than a quarter the length of the straight, sclerotized portion (Fig. 8 C). Color in alcohol: thoracic area brown and cephalic area black; abdomen dorsally brown and variegated; ventrally pale; legs light brown (Figs 7 A–B).
Female. Unknown
Distribution. Known only from the type locality (Brazil, Pará) (Fig. 29).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Collection code
- MPEG
- Event date
- 2011-02-18
- Family
- Salticidae
- Genus
- Amphidraus
- Kingdom
- Animalia
- Material sample ID
- MPEG 32687
- Order
- Araneae
- Phylum
- Arthropoda
- Scientific name authorship
- Ruiz
- Species
- pulvinus
- Taxonomic status
- sp. nov.
- Taxon rank
- species
- Type status
- holotype
- Verbatim event date
- 2011-02-18/23
- Taxonomic concept label
- Amphidraus pulvinus Ruiz, 2017
References
- Galiano, M. E. (1997) Descripcion de Amphidraus argentinensis, nueva especie (Araneae, Salticidae). Physis Buenos Aires (C), 53, 33 - 36.
- ZHang, J. X & Maddison, W. P. (2015) Genera of euopHryine jumping spiders (Araneae: Salticidae), witH a combined molecularmorpHological pHylogeny. Zootaxa, 3938 (1), 1 - 147.