Amphidraus draconicaudatus Salgado & Ruiz, 2017

Salgado, Alexandre & Ruiz, Gustavo R. S., 2019, Seven new species of Amphidraus Simon, 1900 (Araneae: Salticidae: Euophryini), Zootaxa 4563 (3), pp. 451-481: 474-477

publication ID

https://doi.org/10.11646/zootaxa.4563.3.3

publication LSID

lsid:zoobank.org:pub:86E75433-D91B-48E5-9807-9A0A460EFCB3

persistent identifier

http://treatment.plazi.org/id/03F987C0-8A65-0168-3AEE-8C24FC3B4D36

treatment provided by

Plazi

scientific name

Amphidraus draconicaudatus Salgado & Ruiz, 2017
status

 

Amphidraus draconicaudatus Salgado & Ruiz, 2017  

Figs 26 View FIGURE 26 A–D, 26G, 27A–E, 28A, 29A–B, 30

Amphidraus draconicaudatus Salgado & Ruiz, 2017: 427   , figs 22–24 (Holotype ♂ from Pium, 09°58'38.7"S, 50°02'05.0"W, Tocantins, Brazil, 11–26.V.2016, Serrão et al. leg., deposided in MPEG 32689; 1♂ and 2♀ paratypes, same data as holotype, deposited in IBSP 211843–211844, MPEG 32690); World Spider Catalog 2018.

Additional material examined. BRAZIL: Tocantins: GoogleMaps   Caseara   GoogleMaps , 9°18'15.6"S, 49°57'28.4"W: 2♂, 11.V.2016, A.B. Bonaldo et al. leg. ( MPEG 35018 View Materials ); Pium , 09°58'38.7"S, 50°02'05.0"W: 1♂, 19.V.2016, A.B. Bonaldo et al. leg. ( MPEG 35019 View Materials ) GoogleMaps   .

Revised diagnosis. A. draconicaudatus   is similar to A. shenlong   sp. nov. 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 21D View FIGURE 21 , 26A, 26C View FIGURE 26 , 27A View FIGURE 27 ); also, by having the RvTA pointing ventrally, with projections on its border ( Figs 21F View FIGURE 21 , 22B View FIGURE 22 , 26G View FIGURE 26 ). However, the male of A. draconicaudatus   can be distinguished by having the RvTA with a single serrated projection, and a RTA reduced to spikes ( Figs 26G View FIGURE 26 , 27 View FIGURE 27 B–D), whereas in A. shenlong   sp. nov. the RvTA has four projections (three with acute tip and one with serrated tip), and the RTA serrated tip reaches the same height of the RvTA tip along palp axis ( Figs 21F View FIGURE 21 , 22B View FIGURE 22 , 26H View FIGURE 26 ). The female of A. shenlong   sp. nov. is unknown, but among the currently known females of Amphidraus   , A. draconicaudatus   sp. nov. is most similar to those of A. draconitupan   sp. nov., both with spermathecae kidney-shaped, with glands near copulatory openings and with a narrow dorsal pocket placed posteriorly on epigynal plate ( Figs 24D View FIGURE 24 , 25D View FIGURE 25 , 27E View FIGURE 27 ). However, the female of A. draconicaudatus   sp. nov. can be distinguished from that of A. draconitupan   sp. nov. by having longer copulatory ducts connected to the inner posterior border of spermathecae (see Salgado & Ruiz 2017: fig. 24F), whereas they connect to the outer border of the spermathecae in A. draconitupan   ( Fig. 25D View FIGURE 25 ).

Description. See Salgado & Ruiz (2017).

Variation. Among the males examined, we observed the following variation in palpal structures ( Figs 26 View FIGURE 26 A–D, 26G): the superior border of the branched projection of embolic disc can be smooth ( Figs 26 View FIGURE 26 A–B) or occupied by large serial spikes (similar to a comb) ( Figs 26 View FIGURE 26 C–D). We decided to refrain from describing this variation as a new species and all these forms are considered conspecific. Also, the number and shape of branches on the RvTA is variable ( Fig. 26G View FIGURE 26 ; see Salgado & Ruiz 2017: figs 23B, 24B, 24D).

Note. Amphidraus draconicaudatus   , A. shenlong   sp. nov. and A. draconitupan   sp. nov. clearly compose a particular group within the genus. The males in this group have one stout projection that emerges from the retrolateral border of the embolic disc and extends towards to retrolateral border of tegulum ( Figs 22A View FIGURE 22 , 25A View FIGURE 25 , 26A View FIGURE 26 , 27A View FIGURE 27 ). Moreover, males also have pockets on outer faces of chelicerae ( Figs 28 View FIGURE 28 A–C, 29A–B), of unknown use.

Distribution. Known only from the state of Tocantins ( Brazil) ( Fig. 30 View FIGURE 30 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Amphidraus

Loc

Amphidraus draconicaudatus Salgado & Ruiz, 2017

Salgado, Alexandre & Ruiz, Gustavo R. S. 2019
2019
Loc

Amphidraus draconicaudatus

Salgado, A. & Ruiz, G. R. 2017: 427
2017