Seven new species of Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini) Author Salgado, Alexandre Author Ruiz, Gustavo R. S. text Zootaxa 2019 2019-03-04 4563 3 451 481 journal article 28135 10.11646/zootaxa.4563.3.3 6c280343-607d-4ff5-b2ba-1ed24db90c36 1175-5326 2601342 86E75433-D91B-48E5-9807-9A0A460EFCB3 Amphidraus shenlong sp. nov. Figs 21 , 22 , 26 E–F, 26H, 28B, 30 Type material. Holotype : ♂ from Conceição do Araguaia , 07°59’53.7”S , 49°22’27.1”W , Pará , Brazil , 16.I.2018 , R.P.S Almeida. & F.V. Arruda leg. ( MPEG 35020 ). Paratypes : 2♂ , same data as holotype ( MPEG 35021 , IBSP 221864 ) . Additional material examined. BRAZIL : Pará : 4♂ from Conceição do Araguaia , 07°59’53.7”S , 49°22’27.1”W , 16.I.2018 , R.P.S Almeida. & F.V. Arruda leg. ( MPEG 32794 , 32807 ). 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. 21D ). FIGURE 17. Amphidraus manauara sp. nov. A–C left male palp (A ventral; B dorsal; C retrolateral); D epigyne/vulva, cleared, ventral. Abbreviations: cc, cymbial conductor; cd, copulatory duct; co, copulatory opening; Cy, cymbium; dPED, distal process on embolic disc; e, embolus shaft; ed, embolic disc; ef, embolic filament; fd, fertilization duct; gl, gland; po, coupling pocket; RTA, retrolateral tibial apophysis; RvTA, retroventral tibial apophysis; S, spermatheca; T, tegulum; TL, tegular lobe; vPED, ventral process on embolic disc. FIGURE 18. Morphological variation in Amphidraus caxiuanan Salgado & Ruiz, 2017 . A–D holotype from Melgaço, Pará (A male, dorsal; B left palp, ventral; C retrolateral; D dorsal). E–H specimen from Oriximiná, Pará (E male, dorsal; F left palp, ventral; G retrolateral; H dorsal). Abbreviations: cc, cymbial conductor; dPED, distal process on embolic disc; e, embolus shaft; ef, embolic filament; RTA, retrolateral tibial apophysis; RvTA, retroventral tibial apophysis; TL, tegular lobe; vPED, ventral process on embolic disc. Black arrow in D shows dorso-prolateral, proximal cymbial projection. FIGURE 19. Comparison of male palpal structures in Amphidraus spp. A–B, E left male palp of A. manauara sp. nov. (A ventral; B cymbium, dorsal; E retrolateral, bulb removed). C–D, F–G left male palp of A. caxiuanan Salgado & Ruiz, 2017 (C holotype from Melgaço, ventral; D same, cymbium, dorsal; G same, retrolateral, bulb removed; F specimen from Oriximiná, retrolateral, bulb removed. Abbreviations: Cy, cymbium; RTA, retrolateral tibial apophysis; RvTA, retroventral tibial apophysis; T, tegulum. 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 21 C–D, 26A, 27A), and by having the RvTA ventrally projected with projections on its border ( Figs 21F , 22B , 26G ). 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 21F , 22B , 26H ), whereas in A. draconicaudatus the RvTA has a single serrated projection and the RTA is reduced to spikes ( Figs 26G , 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. 28B ). Palp ( Figs 21 C–F, 22A– B): femur with median-ventral region slight prominent ( Fig. 21F ); cymbium oval; cymbial conductor leaf-shaped ( Fig. 22A ); tegulum with narrow lobe curved to retrolateral side ( Figs 21E , 22A ); embolic disc with three processes very closer together: two rounded distal processes (dPED) almost fused and one short triangular ventral process (vPED) ( Figs 21E , 22A ). Embolic filament about as long as embolus shaft ( Figs 21C, 21E ). Color in alcohol ( Figs 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. 30 ). Natural History. The specimens were collected from ecotonal zone between the Cerrado and the Amazon rainforest.