Mago brimodes Ruiz & Maddison, 2019

Ruiz, Gustavo R. S., Maddison, Wayne P. & Galiano, Maria Elena, 2019, A revision of the concept of Mago O. Pickard-Cambridge, 1882, and proposal of a new genus (Araneae: Salticidae: Amycini), Zootaxa 4658 (1), pp. 124-140 : 130-133

Mago brimodes Ruiz & Maddison sp. nov.

Figs 10–34

Types. Male holotype from Manakin Trail, Reserva Canandé, Esmeraldas, Ecuador (0.5270–0.5265°N, 79.2092– 79.2089°W), 310 m, 19 Aug. 2011, Maddison, Piascik & Vega (WPM#11-155), deposited in QCAZ. Female paratype with same data, except for Quail Trail (0.5253–0.5252°N, 79.2076–79.2073°W), 320 m (WPM#11-130), deposited in QCAZ .

Additional material examined. ECUADOR. Esmeraldas: Reserva Canandé: 1♂, Tanager Trail (0.5222– 0.5221°N, 79.1965–79.1969°W), 580 m (WPM#11-143) ; 1♂, Macaw Trail (0.5179–0.5175°N, 79.1936– 79.1935°W), 590 m (WPM#11-161) ; 1♂, Quail Trail (0.5246°N, 79.2053°W), 320 m (WPM#11-147) ; 1♂, Quail Trail (0.5254–0.5252°N, 79.2080–79.2076°W), 300 m (WPM#11-129) ; 1♂, Quail Trail (0.5253–0.5252°N, 79.2076–79.2073°W), 320 m (WPM#11-130) ; 3♂, Manakin Trail (0.5270–0.5265°N, 79.2092–79.2089°W), 310 m (WPM#11-155) ; 1♂, Manakin Trail (0.5263–0.5252°N, 79.2105–79.2099°W), 320 m (WPM#11-152) ; 2♂, Mana- kin Trail (0.5273–0.5269°N, 79.2069–79.2066°W), 290 m (WPM#11-156) ; 1♂, Manakin Trail (0.5274–0.5270°N, 79.2089–79.2088°W), 300 m (WPM#11-154) ; 2♂, Manakin Trail (0.5279–0.5274°N, 79.2088–79.2036°W), 300 m (WPM#11-153) ; 1♂, Tanager Trail (0.5223–0.5220°N, 79.1958–79.1954°W), 580 m (WPM#11-145) ; 1♂, Quail Trail (0.5235°N, 79.2038–79.2035°W), 400 m (WPM#11-186) ; 1♂, Chocó Tapaculo Trail (0.5218–0.5215°N, 79.2125–79.2124°W), 400 m (WPM#139) ; 1♂, Quail Trail (0.5255–0.5253°N, 79.2073–79.2069°W), 330 m (WPM#11-131) , 1♂, Macaw Trail (0.5187–0.5184°N, 79.1942–79.1939°W), 580 m (WPM#11-163) ; 2♂, Quail Trail (0.5234–0.5223°N, 79.2033–79.2030°W), 430 m (WPM#11-185) ; 1♂, Quail Trail, DNA voucher d443 (WPM#11-148). All specimens collected by Maddison, Piascik & Vega, 17–23 Aug. 2011 and deposited in UBC- SEM

.

Etymology. An adjective from the Greek ( brimodes = stern or indignant), due to the thick eyebrow, and their habit of holding the legs tight against the body, as if a person frowning and with arms crossed.

Diagnosis. Male differs from that of M. intentus by having a shorter embolus ( Fig. 28 ; compare to Fig. 6 ). Female is the only one known in the genus ( Figs 33–34 ).

Description. Male (holotype). Total length: 3.60. Carapace 2.30 long, 1.65 wide, 1.35 high, dark brown, with dense black eyebrow and a pair of lines of white scales around cephalic region ( Figs 10–11 , 14, 16 ). Ocular quadrangle 1.20 long. Anterior eye row 1.60 wide, posterior 1.40 wide. Clypeus 0.20 high, with dense, narrow stripe of white setae along border ( Figs 12 , 14 ). AME 0.50 in diameter. Chelicera dark brown, small, vertical, with a small mastidion on the face, near the fang articulation ( Figs 14, 16 ); slightly excavated between mastidion and teeth; five separate small teeth on promargin and six teeth on a common base on retromargin; fang with a retrolateral flap form- ing a spoon-like structure ( Fig. 15 ). Palp light brown, with curved femur bearing five dorsal spines, long patella and short embolus ( Figs 18 , 28–29 ). Endite light brown, tip curved outwards, with a ventral distal protuberance ( Figs 30–31 ). Labium and sternum dark brown, sternum convex. Legs 1324 ( Figs 19–22 ). Total length of leg I: 4.95 (1.55 + 2.20 + 1.20); II: 3.80 (1.25 + 1.50 + 1.05); III: 4.35 (1.65 + 1.60 + 1.10); IV: 3.50 (1.15 + 1.20 + 1.15). Leg I–II dark brown, fading towards the yellow tarsi; III–IV with dark brown femora, but proximally clear; remaining articles yellow, stained of dark brown on joints. Abdomen dark brown, with poorly defined, narrow stripe of white setae on the anterior border; dorsally with lighter chevrons on posterior half ( Figs 10–11 , 16 ); ventrally dark, with four longitudinal light lines. Spinnerets light brown.

Female (paratype). Total length: 3.40. Carapace 1.87 long, 1.37 wide, 1.00 high. Color pattern as in male ( Fig. 13 ). No eyebrow. Ocular quadrangle 1.00 long. Anterior eye row 1.35 wide, posterior 1.25 wide. Clypeus 0.10 high, with no modified setae ( Fig. 17 ). AME 0.45 in diameter. Chelicera with five separate small teeth on promargin and four teeth on a common base on retromargin. Palp short ( Fig. 23 ). Legs 3142 ( Figs 24–27 ). Total length of leg I: 3.05 (0.95 + 1.25 + 0.85); II: 2.64 (0.88 + 1.00 + 0.76); III: 3.36 (1.26 + 1.21 + 0.89); IV: 2.77 (0.92 + 0.92 + 0.93). Epigyne with short copulatory ducts ( Figs 33–34 ).

Variation. Males with smaller palps also have smaller mastidia.

Distribution. Known only from the type locality ( Ecuador).

Figures

FIGURES 10–13. Mago brimodes sp. nov.: 10–12 male (10 dorsal; 11 laterodorsal; 12 frontal); 13 female, dorsal. © 2015 W. Maddison, released under a Creative Commons Attribution (CC-BY) 3.0 license.

FIGURES 14–17. Mago brimodes sp. nov.: 14–16 male (14 face; 15 left chelicera, ventral; 16 lateral); 17 female, lateral.

FIGURES 18–27. Mago brimodes sp. nov.: 18–22 male (18 palp; 19 leg I; 20 leg II; 21 leg III; 22 leg IV, lateral); 23–27 female (23 palp; 24 leg I; 25 leg II; 26 leg III; 27 leg IV, lateral). Scale bar equals carapace length.

FIGURES 28–34. Mago brimodes sp. nov.: 28–32 male (28 left palp, ventral; 29 same, retrolateral; 30 mouthparts, ventral; 31 same, laterodistal; 32 sternum and left coxae, ventral); 33–34 epigyne (33 ventral; 34 cleared, dorsal).

FIGURES 6–9. Mago intentus, male left palp: 6 ventral; 7 retrolateral; 8 dorsal; 9 retrolateral.