Euophrys laetata Simon, 1904

Barry J. Richardson, 2010, A Review of the Jumping Spider Fauna (Araneae: Salticidae) of Chile, Zootaxa 2418, pp. 1-49 : 26-27

Euophrys laetata Simon, 1904

Figs 2 B, 3E, 63–65

Euophrys laetata Simon, 1904: 114 ; Galiano, 1962b: 172, pl. 2, fig. 8; 1963: 350–351, pl. 19, fig. 2.

Type material: 1♀, Coquimbo , Chile, 71.35°W, 29.95°S ( MNHN 22401 , holotype?) .

Diagnosis. The species is distinguishable from the other species of Euophrys in Chile, except E. mapuche , by its light yellow colour and two faint bands of orange hairs on the dorsal abdomen ( Fig.63 ). It is distinguishable from E. mapuche by its plain yellow legs ( Fig. 3 E) and the pattern of dark markings on the posterior end of the dorsal abdomen (compare Figs 63 and 66 ). The morphology of the female genitalia can be distinguished by the combination ( Fig. 64–65 ) of the fossae being widely separated, the insemination ducts short and direct and passing anteriorly to the fossa and the spermatheca are similar size to the fossae.

Description: Male: Unknown. If it follows the pattern of the other species in this genus in Chile, the male will be similar in colouring to the female. Hence it will be distinguishable by the fact that the legs are of plain yellow colour.

Female: Cephalothorax; pars cephalica orange, PLE surroundings black, pars thoracica pale yellow, with pale orange markings, not darker around lower margin. Clypeus narrow, pale-yellow. Chelicerae vertical, yellow, with two promarginal teeth and one retromarginal tooth. Endites, labium, sternum and ventral abdomen yellow. Abdomen pale yellow, elliptical with pair of parallel light brown bands leading to black patterning posteriorly ( Fig. 63 ). Spinnerets yellow. All legs yellow. L1, femur with three dorsal and two distal dorsolateral spines. Patella with a single distal and one proximal pair of dorsolateral spines. Tibia and metatarsus with three and two pairs of ventrolateral spines, respectively. Similar spination on other legs to L1, except all have three distal spines rather than two on the femur, two pair of dorsolateral spines on the patella and L3 tibia has four pairs of ventrolateral spines. Epigynum ( Figs 64–65 ): poorly sclerotised, with two well separated lateral fossae oriented anteriorly and with distinctive, well separated copulatory openings. Insemination ducts relatively short and direct, passing anteriorly to the fossa, spermathecae same size as the fossae, pear-shaped, with pointed fertilization duct on dorsal anterior edge. Dimensions: CL 2.29, EFL 0.93, CW 1.55, AEW 1.49, AMEW 0.93, PEW 1.42, SL 0.93, L1 3.54 (1.18+0.68+0.68+0.50+0.50), L2 3.66 (1.18+0.68+0.68+0.62+0.50), L3 4.77 (1.49+0.68+0.93+0.80+0.87), L4 4.83 (1.49+0.68+0.93+1.11+0.62).

Distribution. Known only from type locality.

Figures

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 63 – 65. Euophrys laetata. 63 female dorsal view; 64 – 65 female genitalia, (64 dorsal view of cleared specimen, 65 ventral view of external characteristics). Scales: total body 1 mm; remainder 0.2 mm

FIGURES 66 – 72. Euophrys mapuche. 66 – 67 dorsal view (66 female, 67 male); 68 – 69 female genitalia (68 dorsal view of cleared specimen, 69 ventral view of external characteristics); 70 – 71 male palp (70 ventral view, 71 lateral view); 72 known distribution. Scales: total body 1 mm; remainder 0.2 mm