Sicarius thomisoides

Sicarius thomisoides
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Araneomorphae
Family:	Sicariidae
Genus:	Sicarius
Species:	S. thomisoides
Binomial name
Sicarius thomisoides (Walckenaer, 1847)[1]
Synonyms[1]
Thomisoides minorata Nicolet, 1849 Thomisoides rubripes Nicolet, 1849 Thomisoides terrosa Nicolet, 1849 Thomisoides nicoletii Keyserling, 1880 Sicarius minoratus (Nicolet, 1849) Sicarius rubripes (Nicolet, 1849) Sicarius terrosus (Nicolet, 1849) Sicarius nicoleti (Keyserling, 1880)

Sicarius thomisoides is a species of spider in the family Sicariidae, found in Chile. It is the type species of the genus Sicarius.^[1] Its correct name has been the source of confusion. It has often been known by the synonym Sicarius terrosus, a name which has also often been used incorrectly for other species.

Taxonomy

There has been confusion over the correct name for this species. In 1847, Charles Athanase Walckenaer published the name Sicarius thomisoides, also erecting the genus Sicarius. He based the name on illustrations he had seen in a work still in preparation and so not then published, namely a section on spiders by Hercule Nicolet in the multivolume Historia física y política de Chile. It was finally published in 1849. Nicolet called the species Thomisoides terrosus. In his earlier publication, Walckenaer had argued that Thomisoides was inappropriate as a genus name, as the species was not related to Thomisus, a crab spider. Although Walckenaer's name has priority, Thomisoides terrosus was used in subsequent descriptions, and even when the generic name Thomisoides was abandoned in favour of Sicarius, the specific name terrosus continued to be employed (e.g. in the World Spider Catalog in 2015). F.O. Pickard-Cambridge had argued in 1899 that if Walckenaer's Sicarius is used as the generic name, his specific name should be too. This argument was reinforced in 2017, and is now accepted, so that Sicarius thomisoides is the correct name for the species, which is the type species of the genus.^[2]

Adding to the confusion, the specific name terrosus "was very seldom used in the literature to refer to the correct Chilean species", so that descriptions under this name may actually refer to species such as Sicarius levii.^[2]

References