Amphidraus draconicaudatus, Ruiz, 2017

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: 427-429

publication ID

https://doi.org/10.11646/zootaxa.4312.3.1

publication LSID

lsid:zoobank.org:pub:304D1493-B681-4215-B1F9-C1911B70087B

persistent identifier

http://treatment.plazi.org/id/26058799-FF85-FF8C-E9AB-FE4CFBA1FC64

treatment provided by

Plazi

scientific name

Amphidraus draconicaudatus
status

sp. nov.

Amphidraus draconicaudatus   sp. nov.

Figs 22–24 View FIGURE 22 View FIGURE 23 View FIGURE 24

Types : material. Holotype: ♂ from Centro de Pesquisa Canguçu, 09°58'38.7"S, 50°02'05.0"W, Pium, Tocantins, Brazil, 11–26.V.2016, L.F.B. Serrão et al. leg. ( MPEG 32689 View Materials ). Paratypes: 1♂ ( IBSP 211843 View Materials ) and 2♀ ( IBSP 211844 View Materials , MPEG 32690 View Materials ), same data as holotype. GoogleMaps  

Additional material examined. BRAZIL: Tocantins: Pium ( Centro de Pesquisa Canguçu , 09°58'38.7"S, 50°02'05.0"W): 6♂, 1♀, 11–26.V.2016, L.F.B. Serrão et al. leg. ( MPEG 32757–32763 View Materials ). GoogleMaps  

Etymology. The epithet is a compound adjective in Latin (draco + cauda) and refers to the shape of the projection of the embolic disc.

Diagnosis. A. draconicaudatus   sp. nov. differs from all Amphidraus   species in having the RvTA with a tooth with cusps ( Figs 24 View FIGURE 24 B –D), the tegular lobe with a rounded retrolateral projection ( Fig. 24 View FIGURE 24 C), the vPED distally placed on the disc and dPED rectangular ( Figs 23 View FIGURE 23 C, 24C), and by the presence of an elongate and stout projection, with several terminal branches, that emerges from the retrolateral border of the embolic disc and extends towards the tegulum border ( Figs 23 View FIGURE 23 A, 23C, 24C, 24D). The females of A. draconicaudatus   sp. nov. ( Fig. 24 View FIGURE 24 F) are superficially similar to those of A. sie (see Galvis 2017: figs 9C –D) and A. bifidus   ( Fig. 21 View FIGURE 21 F) in having a compact, pear-shaped mass of ducts and spermathecae. They can be distinguished from those of A. bifidus   sp. nov. by not having secondary spermathecae and from those of A. sie by the shorter copulatory ducts, reaching the spermathecae near the coupling pocket (in A. sie, copulatory ducts bend from that point and reach the spermathecae after forming another loop; see Galvis 2017, fig. 24f).

Description. Male holotype ( MPEG 32689). Total length: 2.47. Carapace 1.29 long, 0.91 wide and 0.63 high. Ocular quadrangle 0.65 long. Anterior eye row 0.99 wide, posterior 0.87 wide. Legs: 3412. Length of leg I 1.89 (0.61 + 0.63 + 0.65); II 1.83 (0.59 + 0.63 + 0.61); III 2.36 (0.84 + 0.87 + 0.65); IV 2.32 (0.72 + 0.76 + 0.84). Palp ( Figs 23 View FIGURE 23 A –E, 24A –D): cymbium with large cymbial conductor ( Fig. 24 View FIGURE 24 C); RTA reduced; embolic filament longer than straight, sclerotized portion ( Fig. 24 View FIGURE 24 C). Color in alcohol: thoracic area brown and cephalic area black; abdomen dorsally brown and variegated; ventrally pale; legs brown ( Figs 22 View FIGURE 22 A, 22B).

Female paratype ( MPEG 32690). Total length 2.92. Carapace 1.40 long, 0.96 wide and 0.88 high. Ocular quadrangle 0.60 long. Anterior eye row 1.00 wide, posterior 0.88 wide. Legs: 3412; Length of leg I 2.06 (0.60 + 0.78 + 0.68); II 2.02 (0.66 + 0.72 + 0.64); III 2.56 (0.80 + 0.84 + 0.92); IV 2.48 (0.76 + 0.76 + 0.96). Epigyne ( Figs 24 View FIGURE 24 E –F): coupling pocket narrow, dorsally placed on posterior border of epigynal plate; gland present near copulatory openings; primary spermatheca with evident glands ( Figs 24 View FIGURE 24 E, 24F). Color in alcohol: thoracic area dark brown with light brown area in middle portion, cephalic area black; abdomen dorsally brown and variegated; ventrally pale; legs light brown ( Figs 22 View FIGURE 22 C, 22D).

Distribution. Known only from the type locality ( Brazil, Tocantins) ( Fig. 31 View FIGURE 31 ).

MPEG

Museu Paraense Emilio Goeldi

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Salticidae

Genus

Amphidraus