Holotype male: ARGENTINA, Neuquen, 14 km NW Confluencia Arroyo Córdoba, elevation about 740 m, 10.x.1981, Nielsen & Karsholt, genitalia slide no. RA6001♂ (ZMUC).
type genitalia preparation:
Zoological Museum, Natural History Museum of Denmark, Copenhagen (ZMUC)
The species name is derived from Latin dolium (a large rounded vase/barrel/cask used in ancient Roman times for storage or transportation of goods) in reference to the rounded shape of capsule in the male genitalia.