Sicarius mapuche, Magalhaes & Brescovit & Santos, 2017

SICARIUS MAPUCHE View in CoL SP. NOV.

Figures 18C View Figure 18 , 26D, 31D View Figure 31 , 32D View Figure 32 , 33I, 53

Sicarius patagonicus View in CoL : Gerschman de Pikelin & Schiapelli, 1979: 88, plate 2, figs 7, 8, 11 (misidentified).

Note: Gerschman de Pikelin & Schiapelli (1979) identified this species as S. patagonicus View in CoL , but Mello-Leit ao’s ~ (1919) illustration does not match its palpal morphology.

Type material: Male holotype from ARGENTINA. R � ıo Negro: Los Lagos, Cerca del Embalse Alicur a � (LT3S7E5) (70.88539, 40.58961, 772 m), P. Sackmann, I/2005 (MACN-Ar 33860). Paratypes: same collecting data, 1 # 1 imm. (MACN-Ar 33861), 1 $ (MACN-Ar 33862); Mendoza: Papagallo, no collector, no date, 1 # ( MLP 15584 View Materials ) GoogleMaps .

Etymology: The specific name honours the Mapuches, a group of Native American people inhabiting portions of southern Chile and Argentina. The name is to be treated as a noun.

Diagnosis: Males are similar to S. rupestris by the smooth transition between the base and the body of the bulb, but differ by the curved, robust and short embolus (thinner and longer in S. rupestris ) and body of the bulb very curved ( Fig. 53A – D) (straighter in S. rupestris ). Females can be distinguished from other Argentinean species by the long and straight stalks of the spermathecae with a large, oval reservatory at the apex (strongly coiled, small reservatory in S. rupestris ; stalks absent in S. levii sp. nov., Figure 53F – K).

Description: Male (holotype from Embalse Alicur a �, Neuquen, Argentina, MACN-Ar 33860). Coloration: carapace chelicerae, labium and endites reddish brown, sternum, legs and abdomen brownish yellow. Carapace length 3.86, anterior width 1.47, thoracic region width 3.72. Eye diameters and interdistances: PME 0.13, ALE 0.15, PLE 0.13, PME – PLE 0.3, ALE – PLE 0.1. Clypeus height 0.43. Eye tubercles absent. Macrosetae in lateral border of the carapace in a single row. Femora without prolateral black setae Sternum length 1.73, width 1.8, cordiform. Femoral thorns: 4. Leg I: femur 3.99 long, patella 1.4, tibia 3.86, metatarsus 2.86, tarsus 2.26. II: fe 4.52, ti 3.99. III: fe 3.99, ti 3.72. IV: fe 4.39, pa 1.3, ti 3.72, mt 2.66, ta 2.39. Abdomen: length 3.46, width 3.19. Palp as in Figure 53C.

Female ( Valle de Altares , Chubut, Argentina, AMNH). As in male, except for the following. Carapace light reddish brown. Total length 11.38. Carapace length 4.26, anterior width 1.98, thoracic region width 4.11. Eye diameters and interdistances: PME 0.13, ALE 0.13, PLE 0.15, PME – PLE 0.48, ALE – PLE 0.15. Clypeus height 0.66. Sternum length 1.91, width 2.19, cordiform. Femoral thorns: 4. Leg I: femur 4.04 long, patella 1.58, tibia 3.75, metatarsus 2.64, tarsus 2.34. II: fe 4.41, ti 3.8. III: fe 4.36, ti 3.51. IV: fe 4.31, pa 1.6, ti 3.63, mt 2.64, ta 2.37. Abdomen: length 6.83, width 6.14. Spermathecae branches: 11.Ventral branches absent. Spermathecae as in Figure 53J and K.

Variation: Males (N = 6): carapace length 3.47 – 5.76 (4.12), femoral thorns 3 – 4, femur II length 4.21 – 4.82 (4.48). Females (N = 5): carapace length 3.8 – 4.26 (4.14), femoral thorns 3 – 4, femur II length 3.92 – 4.41 (4.23), spermathecae branches 7 – 11. Genital morphology is slightly variable in both sexes (53). Female subadults have pre-spermathecae with 4 – 5 reduced branches, not globose at tip ( Fig. 53E).

Distribution: Arid areas in northern Patagonia, in the provinces of Chubut, Neuquen, R � ıo Negro and Mendoza, Argentina ( Fig. 26D).

Additional material examined: ARGENTINA.