Euathlus susanae Peralta-Seen, Allegue & Ferretti, 2025

Described by Nelson Ferretti, Nicolás Peralta-Seen, Maite Allegue

♀ Female described ♂ Male described

Live specimen © Allegue et al. (2025, fig. 15C) — paratype female UNS M1396, in life

Type Locality and Records

Type locality

Original Description

Allegue, M., Peralta-Seen, N. & Ferretti, N. (2025). Integrative systematics of the tarantulas Euathlus Ausserer, 1875 from Argentina: cladistics, molecular phylogeny and new species (Araneae: Theraphosidae). Arthropod Systematics & Phylogeny 83: 687-712.

Distribution

Argentina

Type Locality: ARGENTINA: Reserva Provincial Cerro Negro, Chical Co Department, La Pampa, 1141 m

Adult Male Activity

Collection months of 1 adult male specimen record, against the rainfall where they live

Adult males collected

Mean monthly rainfall and temperature 2001–2020 near where these males were collected, Argentina. MERRA-2 via NASA POWER, for a grid cell averaging 812 m. Southern hemisphere — seasons are inverted, so December is midsummer.

Etymology

A noun in the genitive, for Susana Seen, the collector's mother, whose support made the discovery possible.

Specimen Records (2)

UNS M1078 ♂ Holotype Argentina

Reserva Provincial Cerro Negro, Chical Co Department, 1141 m, La Pampa

October 2022 · col. G. San Blas, F. Diez & N. Peralta-Seen

Holotype male of Euathlus susanae

UNS M1396 ♀ Paratype Argentina

Reserva Provincial Cerro Negro, Chical Co Department, 1166 m, La Pampa

October 2022 · col. N. Peralta-Seen

Paratype female of Euathlus susanae

Genitalia

Spermathecae © Allegue et al. (2025, fig. 14D) — paratype female UNS M1396

Taxonomic History

2025
Euathlus susanae Peralta-Seen, Allegue & Ferretti, 2025
The only one of the three new species for which all specimens formed a single supported group in the molecular analysis.