Soesilarishius lunatus, Ruiz, 2011

Ruiz, Gustavo Rodrigo Sanches, 2011, Systematics of the genus Soesilarishius (Araneae: Salticidae: Euophryinae), Zootaxa 3022 (1), pp. 22-38 : 30-32

publication ID	https://doi.org/ 10.11646/zootaxa.3022.1.2
DOI	https://doi.org/10.5281/zenodo.5285577
persistent identifier	https://treatment.plazi.org/id/03F75F79-FFA3-9832-FF4A-FB2EFA975265
treatment provided by	Felipe
scientific name	Soesilarishius lunatus
status	sp. nov.

Treatment

Soesilarishius lunatus View in CoL sp. nov.

Figs 22–27, 27 View FIGURES 20–23 View FIGURES 24–31 , 51–52 View FIGURES 45–59 , 60–61 View FIGURES 60–65

Type material: Holotype: male from Campo de Instrução Marechal Newton Cavalcante , Araçoiaba, Pernambuco, Brazil, 7º46’55”S, 35º09’02”W, 2009–2010, A.A. Costa ( IBSP 160619 View Materials ) GoogleMaps . Paratypes: 1 male and 2 females, same data as holotype, IBSP 160756 View Materials , 160757 View Materials , 160620 View Materials GoogleMaps , and 1 male and 1 female, same data as holotype, UFPE GoogleMaps .

Additional material examined. BRAZIL: Pernambuco: 49 males and 38 females, Araçoiaba, Campo de Instrução Marechal Newton Cavalcante , 2009–2010, A.A. Costa ( IBSP 160621–160670 View Materials , UFPE) ; 1 male, Caruaru, 2009–2010, H. Amorim ( IBSP 160858 View Materials ) .

Etymology. The specific epithet is a Latin adjective and refers to the half moon-shaped stripe of white scales present on the anterior border of the abdomen.

Diagnosis. This species is similar to S. spinipes sp. nov. by having long spines on front legs, a reduced embolus in the male palp and four spermathecae in the epigyne, but can be distinguished from that species by the thinner embolus in the male palp (see Figs 24, 28 View FIGURES 24–31 ) and by having a shorter duct connecting the secondary and the primary spermathecae in the epigyne (see Figs 27, 31 View FIGURES 24–31 , 32–33 View FIGURES 32–33 ).

Description. Male holotype: Total length: 2.75. Carapace dark brown, 1.50 long, 1.10 wide, 0.75 high, covered with sparse white scales ( Figs 22 View FIGURES 20–23 , 51–52 View FIGURES 45–59 ). Ocular quadrangle 0.80 long. Anterior eye row 1.12 wide and posterior 0.97 wide. Chelicera dark brown. Labium and sternum dark brown. Endite dark brown, slightly projected laterally. Palp dark brown, with a short RTA, tegulum projected proximally and with a distal bump, and short, distal embolus ( Figs 24–25 View FIGURES 24–31 ). Legs 4312; I dark brown with yellow tarsus; II dark brown, with light brown metatarsus and yellow tarsus; III and IV dark brown with yellow metatarsi and tarsi, and groups of white scales on distal, dorsal portion of tibiae. Length of femur: I 0.92, II 0.75, III 0.95, IV 0.87; patella + tibia: I 1.10, II 0.82, III 1.00, IV 0.95; metatarsus + tarsus: I 0.77, II 0.75, III 1.00, IV 1.15. Spination: femur I d1-1-1, II-III d1-1-1, p0-0-1, IV d1-1-1; patella I p1, II 0, III–IV r1; tibia I v2-2-2 (for proportion, see Fig. 60 View FIGURES 60–65 ), II v1r-1r-1r, p0-1, III v1p-0-0, p1-1, r1-1, IV v1p-0-0, p0-1, r1-1; metatarsus I v2-2, II v2-2, p1-1, III v1r-2, p1-2, r1-2, IV v1p-2, p1-2, r1-2. Abdomen dorsally dark brown, with an anterior, wide, transverse stripe of white scales and a second, thinner, transverse stripe of white scales, slightly posterior to the middle, interrupted at its center; a small whitish area over the anal tubercle ( Fig. 22 View FIGURES 20–23 ); ventrally cream colored. Spinnerets dark brown.

Female (paratype IBSP 160620): Total length: 3.25. Carapace dark brown, 1.62 long, 1.20 wide, 0.80 high ( Fig. 23 View FIGURES 20–23 ). Ocular quadrangle 0.97 long. Anterior eye row 1.25 wide and posterior 1.10 wide. Chelicera light brown. Labium, sternum and endite light brown. Palp yellow. Legs 4312; I light brown, fading towards tarsus; II yellow; III with dark brown femur, light brown patella, yellow tibia with the proximal portion dark brown and a dark brown small area on the prolateral, distal portion; metatarsus and tarsus yellow; IV with dark brown femur, yellow patella with a dark brown distal portion, tibia as in III, yellow metatarsus with a dark brown proximal area and yellow tarsus. Length of femur: I 1.00, II 0.80, III 0.97, IV 0.95; patella + tibia: I 1.25, II 0.90, III 1.07, IV 1.10; metatarsus + tarsus: I 0.80, II 0.80, III 1.07, IV 1.30. Spination: femur I–II d1-1-1, III d1-1-1, p1di, IV d1-1-1, r1di; patella I p1, II 0, III p1, r1, IV r1; tibia I v2-2-2 (for proportion, see Fig. 61 View FIGURES 60–65 ), II v2-2-2, p0-1, III v1p-0, p1-1, r1-1, IV v1p-0, p1- 1, r1-1; metatarsus I v2-2, II v2-2, p1-1, III v2-2, p1-2, r1-2, IV v2di, p1-2, r1-1-2. Abdomen as in male, except for the posterior markings, less conspicuous ( Fig. 23 View FIGURES 20–23 ). Epigyne with anterior, semicircular copulation opening (for a better understanding of this complex epigyne, epigynal structures mentioned here refer to only one of the sides); a short copulation duct leads to a globose secondary spermatheca, in which scent glands open; this secondary spermatheca is connected to the primary spermatheca by a short duct; pores of nutritive glands are present on the wall of the primary spermatheca, beside which the fertilization duct arises ( Figs 26–27 View FIGURES 24–31 , 32 View FIGURES 32–33 ). Spinnerets dark brown.

Remarks. According to J. Zhang (pers. comm.), secondary spermathecae are also present in some other euophryines, such as species of Colyttus Thorell , Thorelliola Strand , Cobanus F.O.P.-Cambridge, Sidusa Peckham & Peckham and Antillatus Bryant.

Variation. Carapace length: 1.275–1.85 (males, n=53), 1.375–1.75 (females, n=41).

Distribution. Known only from the State of Pernambuco, Brazil.

Biological note. The specimens mentioned above were collected from the ground using pitfall traps.