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

publication LSID

lsid:zoobank.org:pub:102DD58C-6F71-495B-8A60-4CFAC10B01B4

persistent identifier

http://treatment.plazi.org/id/4440F01F-8C28-FF57-FDC0-FD8ED653FED4

treatment provided by

Plazi

scientific name

Loxosceles coquimbo Gertsch, 1967
status

 

Loxosceles coquimbo Gertsch, 1967 

Figs 2 View Figure , 8B View Figure , 10 View Figure

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 AMNHAbout 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 Figure ). Females can be recognised by the inner and outer spermathecae with nearly the same size ( Fig. 8B View Figure ; 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. ( AMNHAbout 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 Figure ).

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 Figure ).

AMNH

USA, New York, New York, American Museum of Natural History

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sicariidae

Genus

Loxosceles

Loc

Loxosceles coquimbo Gertsch, 1967

Brescovit, Antonio D., Taucare-Ríos, Andrés, Magalhaes, Ivan L. F. & Santos, Adalberto J. 2017

2017
Loc

Loxosceles coquimbo

Gertsch 1967: 158

1967