Tauala bilobatus, Żabka, Marek & Patoleta, Barbara M., 2015

Żabka, Marek & Patoleta, Barbara M., 2015, New species of Taual a Wanless, 1988 from Australia (Araneae: Salticidae: Astioida: Astiae), with a redefinition of the genus, Zootaxa 4000 (5), pp. 501-517 : 509

Tauala bilobatus sp. nov.

Figs 41–50 , 63

Type material. Male holotype, Finch Hatton, 21º09' S, 148º38' E, [-21.15, 148.63], Queensland, Australia, 7–14 Apr. 1975, R. Raven, V.E. Davies, QMB S90807 .

Etymology. From the bilobate tibial apophysis, to be treated as an adjective.

Diagnosis. Like in T. setosus , tegulum with no apophysis and tibial apophysis bilobate, but subtegulum and tibial scale-like setae missing. Cheliceral fang with a keel ( Fig. 45 ).

Description. Male holotype ( Figs 41–50 ). Eye field brown, eye surroundings darker. Thorax dirty-brown with median wide yellowish stripe. Grey lines radiating from fovea, lower margin dark-grey. Hairiness scarce, not distinctive. Abdomen grey, with lighter median pattern of indistinct chevrons. Spinnerets pale, with grey longitudinal stripe. Clypeus very narrow, dirty-brown. Chelicerae brown, very robust, papillate on the anterior surface, with lateral flanges, and big promarginal apophysis. Posterior cheliceral surface with distinctive depression, bordered by longitudinal ridge. Promargin and retromargin with 3 and 8 teeth, respectively ( Fig. 46 ). Maxillae and labium brownish, with lighter tips. Sternum yellowish, with grey coating. Venter light-grey, pattern poorly preserved. Leg I massive, dirty-brown, patellae and tarsi lighter, tibiae and metatarsi with 3 and 2 pair of long ventrolateral spines respectively, the former with more numerous ventral hairs. Other legs lighter and more delicate, their femora light-pale with dark patches on sides. Palpal organ as in Figs 47–50 . Dimensions: CL 2.04, CW 1.74, CH 1.32, AL 3.39, AW 1.45, AEW 1.68, PEW 1.33, EFL 1.18, LI 5.62 (0.47 + 1.11 + 1.44 + 0.97 + 1.63), LII 4.82 (0.44 + 1.04 + 1.09 + 0.77 + 1.47), LIII 5.18 (0.48 + 1.37 + 1.18 + 0.66 + 1.49), LIV 6.19 (0.58 + 1.65 + 1.54 + 0.70 + 1.72).

Female. Unknown.

Distribution. Known only from the type locality ( Fig. 63 ).

Figures

FIGURE 63. Distribution of T. zborowskii (1 record, white square), T. ottoi (1 record, black square), T. palumaensis (1 record, black triangle), T. bilobatus (1 record, circle), T. setosus (1 record, white triangle).

FIGURES 41 – 50. Tauala bilobatus sp. nov., male holotype. 41 cephalothorax, dorsal view (arrow shows tooth-like apophysis); 42 abdomen, dorsal view; 43 abdomen, ventral view; 44 cephalothorax, lateral view; 45 frontal view (arrow shows keel); 46 cheliceral dentition, endites, labium and sternum; 47 palpal organ, ventro-lateral view; 48 retrolateral view; 49 ventral view; 50 retrolateral view (cf: cymbial flange, e: embolus, rta: retrolateral tibial apophysis, sd seminal duct, t: tegulum). Scale: 41 – 48 = 1 mm, 49 – 50 as in fig.