Amphidraus shenlong,

Salgado, Alexandre & Ruiz, Gustavo R. S., 2019, Seven new species of Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini), Zootaxa 4563 (3), pp. 451-481: 468-472

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Amphidraus shenlong

sp. nov.

Amphidraus shenlong  sp. nov.

Figs 21View FIGURE 21, 22View FIGURE 22, 26View FIGURE 26 E–F, 26H, 28B, 30

Type material. Holotype:GoogleMaps  ♂ from Conceição do Araguaia   GoogleMaps, 07°59’53.7”S, 49°22’27.1”W, Pará, Brazil, 16.I.2018, R.P.S Almeida. & F.V. Arruda leg. ( MPEG 35020View Materials). Paratypes: 2♂, same data as holotype ( MPEG 35021View Materials, IBSP 221864View Materials)GoogleMaps  .

Additional material examined. BRAZIL: Pará:GoogleMaps  4♂ from Conceição do Araguaia   GoogleMaps, 07°59’53.7”S, 49°22’27.1”W, 16.I.2018, R.P.S Almeida. & F.V. Arruda leg. ( MPEG 32794View Materials, 32807View Materials).

Etymology. The specific epithet (noun in apposition) is the name of a dragon of Chinese mythology and refers to the big projection of the embolic disc, which recalls a dragon’s tail (white arrow in Fig. 21DView FIGURE 21).

Diagnosis. A. shenlong  sp. nov. is similar to A. draconicaudatus Salgado & Ruiz, 2017  by having an elongate and stout projection on the retrolateral border of the embolic disc that extends towards the retrolateral tegulum border and bears several branches ( Figs 21View FIGURE 21 C–D, 26A, 27A), and by having the RvTA ventrally projected with projections on its border ( Figs 21FView FIGURE 21, 22BView FIGURE 22, 26GView FIGURE 26). However, A. shenlong  sp. nov. can be distinguished by having the RvTA with four projections (three with acute tip and one with serrated tip) and the RTA serrated tip reaching the same height of the RvTA tip along palp axis ( Figs 21FView FIGURE 21, 22BView FIGURE 22, 26HView FIGURE 26), whereas in A. draconicaudatus  the RvTA has a single serrated projection and the RTA is reduced to spikes ( Figs 26GView FIGURE 26, 27View FIGURE 27 C–D).

Description. Male holotype (MPEG 35020). Total length: 2.68. Carapace 1.31 long, 0.89 wide, 0.69 high. Ocular quadrangle 0.71 long. Anterior eye row 1.01 wide, posterior 0.86 wide. Legs 3412. Length of legs: I 1.82 (0.61 + 0.62 + 0.59); II 1.68 (0.59 + 0.57 + 0.52); III 2.42 (0.83 + 0.84 + 0.75); IV 2.29 (0.69 + 0.75 + 0.85). Chelicera with pocket on outer surface (between dorsum and retrolateral face) ( Fig. 28BView FIGURE 28). Palp ( Figs 21View FIGURE 21 C–F, 22A– B): femur with median-ventral region slight prominent ( Fig. 21FView FIGURE 21); cymbium oval; cymbial conductor leaf-shaped ( Fig. 22AView FIGURE 22); tegulum with narrow lobe curved to retrolateral side ( Figs 21EView FIGURE 21, 22AView FIGURE 22); embolic disc with three processes very closer together: two rounded distal processes (dPED) almost fused and one short triangular ventral process (vPED) ( Figs 21EView FIGURE 21, 22AView FIGURE 22). Embolic filament about as long as embolus shaft ( Figs 21C, 21EView FIGURE 21). Color in alcohol ( Figs 21View FIGURE 21 A–B): cephalic area black; thoracic area yellow; abdomen dorsally variegated with yellow and brown; ventrally yellow; legs yellow.

Female. Unknown.

Distribution. Known only from the type locality (state of Pará, Brazil) ( Fig. 30View FIGURE 30).

Natural History. The specimens were collected from ecotonal zone between the Cerrado and the Amazon rainforest.