In this paper, two new species of Labicymbium Millidge, 1991 from Brazil are described: Labicymbium otti sp. nov. and Labicymbium curitiba sp. nov. Specimens of L. otti sp. nov. were collected from the State of Rio Grande do Sul and are characterized by the presence of an distal suprategular apophyses projected, paracymbium with round margin and radix little developed. The female of this species have copulatory ducts shorter forming a loop in posterior portion. Labicymbium curitiba sp. nov., from the State of Paraná, depicts a distal suprategular apophysis prominent and round, basal hematodochal sclerite on the subtegulum, palpal tibia long, retromedian cymbial process less pointed than those of the close species, paracymbium with projection on the subtegulum and basal hematodochal sclerite. Labicymbium rusticulum (Keyserling, 1891) is reported from new locations in the State of Rio Grande do Sul.
Erigoninae; Neotropical; spiders; taxonomy
