The eggs of Anopheles rangeli from Ecuador and Bolivia and An. Dunhami (formerly An. trinkae) are described, the latter for the first time, from scanning electron micrographs. The most conspicuous feature in both species is the prominent anterior crown, which tends to be more elevated and widened anteriorly in An. rangeli, whereas in An. dunhami it is usually tapered anteriorly (sometimes straight) with the anterior end of the egg easily visible and slightly protruding. The egg of An. dunhami is longer in relation to width than that of An. rangeli, its floats are longer and almost invariably touch the posterior margin of the crown, while the An. rangeli floats are shorter, wider, and not contiguous with the crown. Eggs of the two species are readily distinguishable with a stereomicroscope, providing an alternative to unreliable morphological keys for separation of adult females.