Loxosceles coquimbo Gertsch, 1967

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 : 8-10

publication ID	https://doi.org/ 10.5852/ejt.2017.388
DOI	https://doi.org/10.5281/zenodo.6010754
persistent identifier	https://treatment.plazi.org/id/4440F01F-8C28-FF57-FDC0-FD8ED653FED4
treatment provided by	Plazi
scientific name	Loxosceles coquimbo Gertsch, 1967
status

Treatment

Loxosceles coquimbo Gertsch, 1967 View in CoL

Figs 2 View Fig. 2 , 8B View Fig. 8 , 10 View Fig. 10

Loxosceles coquimbo Gertsch, 1967: 158 View in CoL , 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). GoogleMaps

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 View Fig. 2 ). Females can be recognised by the inner and outer spermathecae with nearly the same size ( Fig. 8B View Fig. 8 ; 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); GoogleMaps Elqui , 1 ♂, La Higuera, Los Choros , 29.2469 S, 71.4617 W, 6–9 Jul. 2007, J. Pizarro leg. ( LEULS). GoogleMaps

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 View 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.

Distribution

Known from the Coquimbo Region in Chile only ( Fig. 10 View Fig. 10 ).