Frewena terraregina, Richardson, 2022

Richardson, Barry J., 2022, Additions to the euophryine jumping spider fauna (Araneae: Salticidae) of Australia, Zootaxa 5141 (3), pp. 249-269 : 263

Frewena terraregina n. sp.

Figs 53–60

Type material. Holotype: 1♂, White Mountains , Queensland, 144.80°E, 20.38°S, 2 Apr. 2000, P.J.M. Greenslade, (ANIC 42 001432).

Etymology. The name reflects the Queensland origin of the type material and is to be treated as a noun in apposition.

Diagnosis. It differs from the type species by the shorter and wider shape of the cymbium, the presence of a large bulge on the ventral surface of the tegulum and a small hooked posterior lobe. A mottled brown pattern is found on the dorsal surface of the abdomen rather than the distinctive pattern of large dark spots on the dorsal abdomen found for F. maculata . The lateral position and the shape of the embolus (Figs 75–77) and long L3 clearly show that this is a species of Frewena .

Description. Male: Cephalothorax mid to dark orange with scattered pennate grey hairs over dorsal and lateral surfaces. Relatively longer cephalothorax with a steeper posterior slope than in F. maculatus . Integument surrounding ALE, PME and PLE dark brown with scattered grey hairs. Clypeus narrow, with a sparse grey fringe. Chelicerae not geniculate, medium brown. A single very small prolateral tooth and a single small sharp retrolateral tooth are found on the distal edge of the paturon. Endites white, grading to light brown, labium dark brown. Sternum mid-brown. Dorsal abdomen light brown, with darker, lace-like patterning. Large mid-brown sclerite-like shape apparent under the surface patterning. Spinnerets pale yellow and black. Ventral abdomen same colour as dorsal surface. Legs mid-brown, without stripes or markings. L3 much longer than remainder. Palp: brown, tibia with a single long narrow apophysis. Patella with a long dorsal fringe of long thick hairs. Tegulum very broad with a proximal lobe, a projection on the distal margin and large ventrolateral swelling. The origin of the embolus lateral, forming a tapering single anticlockwise spiral then moving distally across the surface of the cingulum. Dimensions (Holotype): CL 1.4, EFL 0.6, CW 1.1 AEW 0.9 AMEW 0.6, PEW 0.9, AL 1.3, L1 1.45 (0.7+0.4+0.35+0.3+0.2), L2 1.8 (0.65+0.35+0.25+0.25+0.3), L3 2.55 (0.95+0.55+0.4+0.3+0.35), L4 2.45 (0.8+0.45+0.5+0.35+0.35).

Female: Unknown.

Distribution and Biology. Known only from the type locality, in litter ( Fig. 60 ). As a consequence, IUCN Red List Category DD. Because of its limited known range it may be at risk through climate change or habitat loss.

Figures

FIGURES 53–60. Frewena terraregina n. sp. Holotype (42 001432), (male; 53 dorsal, 54 ventral, 55 lateral, 56 anterior 57 anterior palp, 58 ventral palp, 59 posterior palp); 60 distribution map. Scale: 0.2mm.