Loxosceles vallenar, Brescovit & Taucare-Ríos & Magalhaes & Santos, 2017

Brescovit, Antonio D., Taucare-Ríos, Andrés, Magalhaes, Ivan L. F. & Santos, Adalberto J., 2017, 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, European Journal of Taxonomy 388, pp. 1-20 : 14-16

Loxosceles vallenar sp.nov.

urn:lsid:zoobank.org:act:C3AAF160-148A-483A-8976-7391C4754F29

Figs 8E , 10

Diagnosis

Females of Loxosceles vallenar sp. nov. can be distinguished from other Chilean species by the spermathecae with large base and slender, curved receptacles ( Fig. 8E ).

Etymology

The specific name is a noun in apposition taken from the type locality.

Type material

Holotype

CHILE: ♀, III Región de Atacama: Huasco, Vallenar, 3 km S of Vallenar , 28.56667 S, 70.75 W, 460 m a.s.l., in scrubby mountain-side, under rocks, 7 Jan. 1985, N. Platnick and O. Francke leg. ( AMNH).

Description

Male

Unknown.

Female (holotype, AMNH)

Carapace anteriorly and laterally orange, posteriorly yellow, lacking the dark-coloured violin-shaped median band. Chelicerae red brown. Endites and labium orange. Sternum, legs and coxae, femur and patella of palps yellow. Palpal tibia and tarsus red brown. Opisthosoma uniformly grey. Total length 6.0. Carapace 2.2 long, 1.6 wide. Clypeus 0.25 high. Eye diameters: ALE 0.1, PME 0.12, PLE 0.1. Sternum 1.2 long, 0.9 wide. Leg I: femur 2.1, patella 0.6, tibia 2, metatarsus 1.8, tarsus 0.7, total 7.2. II: 2.2, 0.6, 2.0, 1.8, 0.7, 7.3. III: 1.9, 0.6, 1.5, 1.6, 0.5, 6.1. IV: 2.3, 0.7, 2.2, 2.1, 0.7, 8.0. Leg formula 4213. Palp tarsus 0.7 long, enlarged. Spermathecae with oval receptacle ( Fig. 8E ).

Distribution

Known only from the type locality in the Atacama Region, Chile ( Fig. 10 ).

Figures

Fig. 8. Spermathecae, dorsal view (except D, ventral), cleared. A. Loxosceles surca Gertsch, 1967, ♀, Zapahuira, Parinacota, Tarapacá (AMNH). B. Loxosceles coquimbo Gertsch, 1967, ♀, Lomas de Peñuelas,Coquimbo(AMNH).C.Loxoscelespallallasp.nov.,♀,6kmSofCruzGrande,Elqui(AMNH). D. Loxosceles diaguita sp. nov., ♀, paratype (MACN-Ar 30185). E. Loxosceles vallenar sp. nov., ♀, holotype (AMNH). Scale bars = 0.5 mm.

Fig. 10. Geographicdistribution records of species of Loxosceles inChile. Records of L.laeta (Nicolet, 1849) are based on the material examined in this study and on Gertsch (1967). Stars under L. surca Gertsch, 1967 and L. coquimbo Gertsch, 1967 are records from Gertsch (1967).