Lanyon,W & Lanyon,S, 1986
They closely resembles the Empidonax flycatchers in appearance, and were formerly placed in that genus, but differ anatomically and biochemically.
There are only two known species in the genus:
- Euler's Flycatcher, Lathrotriccus euleri
- Grenadan Euler's Flycatcher, Lathrotriccus euleri flaviventris - formerly Empidonax euleri johnstonei; extinct (early 1950s)
- Grey-breasted Flycatcher, Lathrotriccus griseipectus
These are birds of fairly open habitats such as open woods and arid scrub. They are inconspicuous birds, tending to keep to undergrowth perches from which they sally forth to catch insects.