Euophrys flordellago, Barry J. Richardson, 2010

Barry J. Richardson, 2010, A Review of the Jumping Spider Fauna (Araneae: Salticidae) of Chile, Zootaxa 2418, pp. 1-49 : 24-26

Euophrys flordellago n. sp.

Figs 2 E, 3H, 56–62

E. saitiformis: Braul et al. 1997: 146 –147, figs 7–9. (male misidentified).

Etymology. A combination of letters, to be treated as a noun in apposition.

Remarks. The illustration of the male of E. saitiformis by Braul et al. (1997) based on material from Brazil, matches the abdominal colour pattern of this species but not that of E. saitiformis ( Fig. 96 ). The fact that the external female genitalia of the two species are indistinguishable and different from that of other species may have misled these workers.

Type material: Holotype: ♀, Villarrica , Flor del Lago Ranch , Chile, 72.13°W, 39.20°S, 11 December 2003, I. Avila et al, hand ( BJR974 , MNNC 6805 ) .

Paratype: 1♀, Villarrica , Flor del Lago Ranch , Chile, 72.13°W, 39.20°S, 12 December 2001, E. Arias et al. ( BJR1001 , CAS 9029849 ) .

Diagnosis. Females of the species are distinguishable from the other species of Euophrys in Chile, except E. saitiformis , by the external morphology of the epigynum. The spermatheca is larger than the fossa and lies immediately posterior to it. It is distinguishable from E. saitiformis by the internal anatomy of the insemination duct which is uncoiled ( Fig. 58 ), unlike that of E. saitiformis ( Fig. 98 ). The animals also have black rather than yellow chelicerae and patterned rather than the plain yellow legs seen in E. saitiformis ( Figs 3 H vs. 3E). The males of the species, though not seen, should be distinguishable from the other species of Euophrys in Chile, except E. tehuelche , by the presence of black chelae and by the pattern of black markings on the legs ( Fig. 3 H) not seen on E. tehuelche ( Fig. 3 G).

Description. Male: If it follows the pattern of the other species in this genus in Chile, the male will be similar in colouring to the female and therefore the Braul et al. (1997) description is of this species, then: Cephalothorax dark brown, a little lighter in the thoracic region with a lighter area around the fovea, white hairs on the posterior region. Yellowish bristles around the eyes. Chelicera with two promarginal teeth arising from a single base and a single retromarginal tooth. Clypeus narrow. Endites and labium dark brown. Sternum orange. Dorsal abdomen beige with darker patterning as in Fig. 57 , ventral abdomen with scattered spots. Legs beige with brown areas. Palp ( Figs 60–61 ): tibia with a thin and very long apophysis. Tegulum large and tapering, embolus sinuous, arising from the margin of the tegulum. Dimensions (after Braul et al. 1997): CL 2.26, EFL 1.58, CW 1.64, AL 2.17, SL 0.86, L1 5.0 0 (1.42+0.86+1.14+1.0 2+0.56), L 2 3.88 (1.20+0.64+0.80+0.76+0.48), L3 4.50 (1.30+0.64+0.80+1.26+0.50), L4 4.70 (1.40+0.64+0.90+1.18+0.58).

Female (holotype): 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. 56 ). Spinnerets yellow. All legs yellow. L1, femur with three dorsal and two distal dorsolateral spines. Patella with one 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 and L3 tibia has four pairs of ventrolateral spines. Epigynum ( Figs 58–59 ): poorly sclerotised, with two anterior fossae directed posteriorly and with distinctive, well separated copulatory openings. Insemination ducts relatively short and direct, spermathecae placed directly posterior to the fossae and much larger than the fossae, pear-shaped, with pointed fertilization ducts on anterior dorsal edge. Dimensions (holotype): CL 2.29, EFL 0.93, CW 1.55, AEW 1.49, AMEW 0.93, PEW 1.42, SL 0.93, L1 3. 5 4 (1. 1 8+ 0. 6 8+ 0. 6 8+ 0. 5 0+ 0. 5 0), L 2 3. 6 6 (1. 1 8 + 0. 6 8+ 0. 6 8+ 0. 6 2+ 0. 5 0), L 3 4. 7 7 (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, and southeastern Brazil (Braul et al. l997).

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 96 – 102. Euophrys saitiformis. 96 – 97 female dorsal view (96 E. saitiformis type, 97 E. cruziana type). 98 – 101 female genitalia (98 dorsal view of cleared type specimen of E. saitiformis. 99 ventral view of external characteristics of type specimen of E. saitiformis, 100 dorsal view of cleared type specimen of E. cruziana, 101 ventral view of external characteristics of type specimen of E. cruziana); 102 known distribution. Scales: total body 1 mm; remainder 0.2 mm

FIGURES 56 – 62. Euophrys flordellago. 56 – 57 dorsal view (56 female, 57 possible male, redrawn after Braul et al. 1997, see text); 58 – 59 female genitalia (58 dorsal view of cleared specimen, 59 ventral view of external characteristics); 60 – 61 possible male palp (60 ventral view, 61 lateral view, redrawn after Braul et al. 1997, see text); 62 known distribution. Scales: total body 1 mm; remainder 0.2 mm