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 Author Brescovit, Antonio D. Author Taucare-Ríos, Andrés Author Magalhaes, Ivan L. F. Author Santos, Adalberto J. text European Journal of Taxonomy 2017 2017-12-27 388 1 20 journal article 31100 10.5852/ejt.2017.388 d5b314e8-8740-4134-b113-03bfa693b3c0 1133570 102DD58C-6F71-495B-8A60-4CFAC10B01B4 Loxosceles coquimbo Gertsch, 1967 Figs 2 , 8B , 10 Loxosceles coquimbo Gertsch, 1967 : 158 , pl. 8, fig. 5 ( female holotype from Chile , IV Región de Coquimbo , Coquimbo , Elqui , Playa Blanca , 30.2218 S , 71.40602 W , deposited in AMNH , not examined). Note Males were not collected with females; the only male comes from a locality 83 km to the north of the nearest collected female. They are here associated based on the morphology of genital and copulatory organs, which are comparatively simple in the male and the female, and fitting the diagnosis of the laeta species-group, as well as on the leg formula (4213). Despite having visited the type locality, we could not obtain any topotypes. Diagnosis Loxosceles coquimbo differs from other Chilean species by the male palp with tegulum globose and embolus short and sinuous at tip ( Fig. 2A–B ). Females can be recognised by the inner and outer spermathecae with nearly the same size ( Fig. 8B ; Gertsch 1967 : pl. 8, fig. 5). Material examined CHILE . IV Región de Coquimbo : Coquimbo , 2 ♀♀ , Coquimbo , Lomas de Peñuelas , 29.9333 S , 71.3 W , 8 m a.s.l. , under rocks and under dead cactus , 6 Jan. 1985 , N.I. Platnick and O. Francke leg. ( AMNH ); Elqui , 1 ♂ , La Higuera, Los Choros , 29.2469 S , 71.4617 W , 6–9 Jul. 2007 , J. Pizarro leg. ( LEULS ). Fig. 2. Loxosceles coquimbo Gertsch, 1967 , ♂, Los Choros, La Higuera, Elqui (LEULS). A . Palp, prolateral. B . Bulb, prolateral. Description Male ( Los Choros , Elqui , Chile , LEULS) Specimen discoloured, but with carapace orange anteriorly and laterally, yellowish posteriorly. Chelicerae red brown. Endites, labium and sternum yellow. Legs yellowish. Palp yellow, except tibiae and cymbium orange. Opisthosoma uniformly grey. Total length 7.3. Caparace 3.3 long, 2.7 wide. Clypeus 0.35 high. Eye diameters: ALE 0.14, PME 0.16, PLE 0.16. Sternum 1.8 long, 1.4 wide. Leg I: femur 6.6, patella 1.1, tibia 7.5, metatarsus 7.5, tarsus 1.6, total 23.1. II: 7.5, 1.2, 8.6, 9.1, 1.8, 25.2. III: 6.2, 1.1, 6.1, 7.2, 1.3, 21.9. IV: 7.3, 1.1, 7.0, 8.6, 1.6, 25.7. Leg formula 4213. Palpal femur 3.1 long, 0.4 wide. Palpal tibia 2.1 long, 0.5 wide. Palp with a short cymbium, a round tegular base with half-length of cymbium, and a straight and short embolus with a truncated tip ( Fig. 2 ). Female Described by Gertsch (1967) . Palpal tarsus narrow. Variation Female (n = 2): total length 6.3–7.2, carapace 2.4–3.3 long, femur I 3.6–3.8 long. Palpal tarsus 1.2–1.3 long. Fig. 3. Loxosceles diaguita sp. nov. A–B . ♂, holotype (MNHNCL 7946). A . Habitus, dorsal. B . Carapace, dorsal. C–D . ♀, paratype (MACN-Ar 30185). C . Carapace, dorsal. D . Left palp, prolateral. Distribution Known from the Coquimbo Region in Chile only ( Fig. 10 ).