Chaenothecopsis is a genus of about 40 species of pin lichens in the family Mycocaliciaceae.

[3] The genus was circumscribed in 1927 by Finnish lichenologist Edvard August Vainio, with Chaenothecopsis rubescens assigned as the type species.

[1] Many of the species are resinicolous, meaning they grow on conifer resin or other plant exudates.

Most common host plants are trees in the genera Abies, Picea, and Tsuga.

[4] In contrast, Chaenothecopsis kilimanjaroensis is a lichenicolous lichen, meaning it grows on the thalli of other lichens–sometimes as a parasically, sometimes commensally.