Dendryphantes mordax ( C. L. Koch, 1846 )

Barry J. Richardson, 2010, A Review of the Jumping Spider Fauna (Araneae: Salticidae) of Chile, Zootaxa 2418, pp. 1-49 : 17-19

Dendryphantes mordax ( C. L. Koch, 1846)

Figs 32–37

Hyllus mordax C. L. Koch, 1846: 165 , Fig. 1219.

Euophrys jacunda C. L. Koch, 1846: 205 , Fig. 1252.

Attus iricolour Nicolet, 1849: 366 ; Ramirez, 1989: 8. Attus scalaris Nicolet, 1849: 365 ; Ramirez, 1989: 8.

Attus superbus Nicolet, 1849: 380 ; Ramirez, 1989: 8. Attus zonarius Nicolet, 1849: 373 ; Ramirez, 1989: 8.

Freya jacunda C. L. Koch, 1850: 66 .

Dendryphantes mordax: Simon, 1901a: 601 ; Galiano, 1979: 342 Figs 1–6 ; Ruiz and Brescovit, 2008. Phiale jucunda: Simon, 1903: 702 .

Material examined. CHILE: 1 imm, Pichidigua , Chile, 71.28°W, 34.52°S, 2 December 1965, A. G. Peterson, ( BJR858 , FSCA) ; 1 imm. ♀, Oncol Park , 73.30°W, 39.68°S, 22 February 2008, B. J. Richardson, bark stripping ( BJR1110 , CAS) .

Diagnosis. From the published descriptions it is likely that the abdominal pattern is distinct. The marked patterns of white pennate hairs down the centre and sides of the abdomen and the distinctive shape of the dark pattern on the dorsal surface of the abdomen have not been reported in the other Chilean species in the genus.

Description: Male (after Galiano 1979): Cephalothorax dark reddish brown with pars cephalica black. White stripes of pennate hairs along each side. Clypeus narrow, with light brown fringe. Chelicerae midbrown, groove deeply excavated. Promargin with a low blunt tubercle near base of chelicera and two teeth, one in the middle and the other on the angle. Retromargin with a single robust tooth. Endites and labium yellow-brown. Sternum dark brown. Abdomen light brown with dark brown thick median stripe leading to four large lateral branches on each side (see Fig. 32 ). Distinct broad stripes of white pennate hairs down the centre and sides of the abdomen bordered by golden reflective scales. Ventral surface mid-brown with lines of lighter spots. Spinnerets mid brown. L1 reddish brown with distal end darker. Tarsus yellow. Other legs light brown with dark brown markings at distal ends of each segment. Tibia and metatarsus with three and two pairs of ventrolateral spines, respectively. Similar spination on leg 2. Other legs pale, spines less distinctive. All legs, especially ventral femora and tibiae, with long white hairs. Spination: L1, femur with three dorsal and two distal dorsolateral spines, patella no spines, tibia with three pairs of ventrolateral spines, metatarsus with two pairs of ventrolateral spines, L2 femur with three dorsal and two distal dorsolateral spines, patella no spines, tibia with one right and one pair of ventrolateral spines, metatarsus with two pairs of ventrolateral spines, L3 femur with three dorsal and three distal dorsolateral spines, patella no spines, tibia with a pair of ventrolateral spines, metatarsus with four ventrolateral spines, L4 femur with three dorsal and two dorsolateral spines, patella no spines, tibia with one posterior and one pair of ventrolateral spines, metatarsus with 4 ventrolateral spines. Palp ( Figs 35–36 ): tibia with single small apophysis. Tegulum without lobe. Dimensions: CL 2.60, EFL 1.03, CW 2.17, AEW 1.57, PEW 1.77.

Female: Similar to the male, except L1 and palp same colour as other legs. Chelicerae with two promarginal and one retromarginal teeth. Spination: L1, femur with three dorsal and two distal dorsolateral spines, patella no spines, tibia with three pairs of ventrolateral spines, metatarsus with two pairs of ventrolateral spines, L2 femur with three dorsal and two distal dorsolateral spines, patella no spines, tibia with one right and one pair of ventrolateral spines, metatarsus with one right and one pair of ventrolateral spines, L3 femur with two dorsal and three distal dorsolateral spines, patella no spines, tibia with one ventrolateral spine, metatarsus with four ventrolateral spines, L4 femur with three dorsal and one dorsolateral spines, patella no spines, tibia with one posterior and one pair of ventrolateral spines, metatarsus with four ventrolateral spines. Epigynum ( Fig. 37 ): poorly sclerotised, with a posterior median notch and pocket on the margin of the epigastric fold. Insemination ducts long and convoluted, spermathecae small and round. Dimensions: CL 2.93, EFL 1.13, CW 2.17, AEW 1.65, PEW 1.87.

Distribution. Distributed from Chile to Uruguay and Argentina.

Figures

FIGURE 1. Characters and measurements taken from specimens. See Methods for abbreviations.

FIGURE 2. Male face patterns (semidiagramatic) in the genus Euophrys. Stippled areas are orange / mid-brown in colour, plain areas yellow, black areas are black or very dark brown. White or light grey pennate hairs are found in different patterns in different species. In each species there is some significant variation in the intensity of the colouring. Pattern unknown for E. saitiformis.

FIGURE 3. Semi-diagrammatic colour patterns of the first and fourth legs of males in the genus Euophrys. Light stippled areas are orange / mid-brown in colour, plain areas yellow, dark stipples areas are black or very dark brown. In each species there is some variation in the intensity of the colouring. L 4, left; L 1 right.

FIGURES 4 – 10. Admesturius bitaeniatus. 4 – 5 dorsal view (4 female, 5 male); 6 – 7 female genitalia (6 dorsal view of cleared specimen, 7 ventral view of external characteristics); 8 – 9 male palp (8 ventral view, 9 lateral view); 10 known distribution. Scales: total body 1 mm; remainder 0.2 mm

FIGURES 32 – 38. Dendryphantes mordax. 32 Female dorsal view. 33 – 34 chelicera. (33 female, 34 male [redrawn after Galiano 1979]); 35 – 36 male palp (35 ventral view, 36 lateral view [both redrawn after Galiano 1979]); 37 female genitalia, dorsal view of cleared specimen [redrawn after Galiano 1979], 38 known distribution. Scales: 0.2 mm