The physical characteristics of Teuvoa include a crustose thallus, forming a distinct areolate or patchy pattern, which can range from white to grey in colour with a dull surface.

Teuvoa is distinct from related genera such as Aspicilia and Lobothallia due to a variety of features including size, secondary metabolites, and ecological amplitude.

The genus was circumscribed in 2013 by lichenologists Mohammad Sohrabi and Steven Leavitt with Teuvoa uxoris assigned as the type species.

Additionally, Teuvoa forms pycnidia, small flask-shaped structures producing asexual spores or conidia, which are hyaline (translucent), simple, and tend to be more or less straight.

[2] Teuvoa is distinct from Aspicilia due to its smaller ascospore and conidia size, measuring 5–8 μm, and the lack of secondary metabolites It also differs from the genus Lobothallia, in that it does not have lobate, radiating thalli, a subhypothecial algal layer, or certain secondary metabolites, and it grows on organic substrates such as bark, wood, and dead plant debris.

Teuvoa also stands apart from Aspicilia subgenus Pachyothallia due to its absence of a subhypothecial algal layer, lecanoroid apothecia, certain secondary metabolites, and its different ecological amplitude, growing on organic substrates.

Teuvoa uxoris is a species with a Madrean-Thethyan disjunction, a distribution pattern typically found in plants of Mediterranean and Tethyan regions.

[2] In terms of habitat, Teuvoa uxoris favours coniferous trees and shrubs, including Cedrus atlantica, several Juniperus species, and Pinus halepensis.

Given these hosts' acidic bark, it is plausible that T. uxoris may also be found on other conifer species such as Juniperus excelsa, J. osteosperma, J. polycarpos, and J. sabina.

However, unlike T. saxicola, T. alpina favours coniferous wood as a substrate, reflecting the wide range of habitats thatTeuvoa species have adapted to within similar geographical regions.