Sellnickochthonius Krivolutsky, 1964
Sellnickochthonius foliatus (Hammer, 1958)
Material examined: Alto Rio Senguer: Senecio filaginoides (1). The species was only recorded under shrub steppe. Records in Argentina: Córdoba, Rio Negro and Santa Cruz (Fredes 2018).
Comments: First record for the province of Chubut.