On Chilean Loxosceles (Araneae: Sicariidae): first description of the males of L. surca and L. coquimbo, new records of L. laeta and three remarkable new species from coastal deserts Brescovit, Antonio D. Taucare-Ríos, Andrés Magalhaes, Ivan L. F. Santos, Adalberto J. European Journal of Taxonomy 2017 2017-12-27 388 1 20 6QNHL Brescovit & Taucare-Ríos & Magalhaes & Santos, 2017 Brescovit & Taucare-Ríos & Magalhaes & Santos 2017 [626,864,401,428] Arachnida Sicariidae Loxosceles Animalia Araneae 9 10 Arthropoda species diaguita sp. nov.    Figs 3–6, 8D, 10    Diagnosis Males are easily distinguished from other Neotropical  Loxoscelesby the shape of the palpal bulb, with a large embolus sided by a keel with several longitudinal grooves ( Figs 3C–D, 6A–C). Females are distinguished by the robust, S-shaped stalks of the outer spermathecae and by the reduced inner spermathecae with long, thin stalks ( Fig. 8D).   Etymology The Diaguitas are a Native American tribe whose original territory covered northwestern Argentinaand northern Chile, including portions of the Antofagasta Region, the typelocality of the species. The name is to be treated as a noun in apposition.    Type material    Holotype  CHILE: ♂, II Región de Antofagasta,  Antofagasta, Taltal, 8.1 kmNNW of Paposo, 24.93947 S, 70.49265 W,  114 ma.s.l., ( MJR-loc-45), desert in bloom, matorrales, manual collecting,  27–29 Oct. 2011, M.J. Ramírez, A. Ojangurenand J. Pizarroleg. ( MNHNCL 7946).  Paratypes   CHILE: 2 ♀♀, same data as for holotype(MACN-Ar 30185, MNHNCL 7947); 1 ♂, 1 ♀, Taltal,  6 kmE of Paposo, 25.25 S, 70.25 W,  480 ma.s.l.,  12 Oct. 1992, N. Platnick, R. Catleyand P. Goloboffleg. ( AMNH);  2 ♀♀, Taltal,  4 kmE of Paposo, 25.3 S, 70.2 W,  20–50 ma.s.l.,  11 Oct. 1992, N. Platnick, R. Catley and P. Goloboffleg. ( AMNH);  1 ♀, Paposo, campamento base, 25.00767 S, 70.44678 W,  601 ma.s.l.,  26–29 Oct. 2015, R. Botero-Trujillo, J.R. Pizarro-Araya, J.E. Barriga-Tuñónand F.A. Kongleg. (MACN-Ar 37212).    Note  Males and females Males and females have been matched because they have been collected in the same locality in two different expeditions.    Description  Male(holotype, MNHNCL 7946) Carapace, labium, sternum and legs light brown; carapace lacking the dark-coloured violin-shaped median band typical of  Loxosceles( Fig. 3A–B). Endites light brown, distally reddish brown. Palp light brown, with distal articles reddish brown. Opisthosoma light gray, with whitish cardiac area. Total length 7.31. Caparace 3.33 long, 3.06 wide. Clypeus 0.42 high. Eye diameters: ALE 0.17, PME 0.17, PLE 0.18. Sternum 1.76 long, 1.5 wide. Leg I: femur 6.38, patella 1.24, tibia 6.52, metatarsus 6.52, tarsus 1.47, total 22.13. II: 7.32, 1.3, 8.65, 7.98, 1.53, 26.78. III: 5.85, 1.22, 5.85, 5.85, 1.3, 20.07. IV: 6.38, 1.25, 6.38, 7.05, 1.5, 22.56. Leg formula 2413. Palpal femur 1.83 long, 0.28 wide. Palpal tibia 0.97 long, 0.4 wide. Palp with a short cymbium, a round and short tegular base, and a large and curved embolus with a sculptured keel running from its base to the tip ( Figs 4, 6).  Female (paratype, MACN-Ar 30185) Colour as in male, carapace hirsute ( Fig. 3C). Total length 9.71. Caparace 4.26 long, 3.72 wide. Clypeus 0.57 high. Eye diameters: ALE 0.18, PME 0.18, PLE 0.2. Sternum 2.36 long, 1.93 wide. Leg I: femur 6.12, patella 1.43, tibia 6.92, metatarsus 5.99, tarsus 1.4, total 21.86. II: 6.92, 1.52, 7.71, 6.78, 1.4, 24.33. III: 5.85, 1.44, 5.45, 5.72, 1.34, 19.8. IV: 6.52, 1.47, 6.52, 5.05, 1.47, 21.03. Leg formula 2143. Palp tarsus 1.54 long, narrow ( Fig. 3D). Spermathecae with a wide, sclerotized base. Inner spermathecae with long and thin stalks, which are laterally directed so that the outer spermathecae receptacles are placed medially relative to the inner spermathecae receptacles. Outer spermathecae larger than the inner spermathecae, with a robust, S-shaped stalk ( Figs 5, 8D).   Fig. 5.  Loxosceles diaguita sp. nov., ♀, paratype (MACN-Ar 30185). A–B. Spermathecae. A. Dorsal. B. Ventral.   Variation Male (n = 2): Total length 7.3–7.6, carapace 3.3–3.8 long, femur I 6.2–6.38 long. Palpal tibia 0.9–1.1 long, 0.4–0.5 wide. Female (n = 4): total length 9.7–10.8, carapace 4.0–4.4 long, femur I 5.8–6.4 long. Palpal tarsus 1.2–1.54 long.    Distribution Known from three nearby localities near Paposo, Antofagasta, and northern Chile( Fig. 10). 1801059170 desert in bloom, matorrales 2011-10-27 2011-10-29 2011-10-27 manual collecting MNHNCL Ramírez & Ojanguren & J. Pizarro Chile 114 -24.93947 Taltal, 8.1 km NNW of Paposo 1 -70.49265 10 11 MJR-loc-45, 7946 1 Región de Antofagasta holotype 1801059168 1992-10-11 2015-10-29 1992-10-11 AMNH P. Goloboff & Paposo & Botero-Trujillo & Pizarro-Araya & Barriga-Tunon & F. A. Kong Chile Catley 480 -25.00767 Taltal 1 -70.44678 Platnick 10 11 7 6 1 holotype 1801059175 1992-10-11 2015-10-29 1992-10-11 AMNH P. Goloboff & Paposo & Botero-Trujillo & Pizarro-Araya & Barriga-Tunon & F. A. Kong Chile Catley 480 -25.00767 Taltal 1 -70.44678 Platnick 10 11 7 6 1 holotype 1801059156 1992-10-11 2015-10-29 1992-10-11 AMNH P. Goloboff & Paposo & Botero-Trujillo & Pizarro-Araya & Barriga-Tunon & F. A. Kong Chile Catley 480 -25.00767 Taltal 1 -70.44678 Platnick 10 11 7 6 1 holotype