This species, like the genus Exaerete, is a nest parasite on free-living Euglossini.

Among other substances, males of this species are attracted by methyl cinnamate baits.

The original 1825 publication describing the species spelled the epithet as "cœrulea" (for "blue"), which nearly all subsequent authors misspelled as caerulea rather than coerulea, but under Article 33.3.1 of the ICZN, the caerulea spelling must be maintained.

[note 1] A. caerulea was thought to occur only in the Amazon basin, in the rainforests of northern Bolivia, western Colombia, Ecuador, French Guiana, Guyana, Peru, Venezuela, Suriname, and Panama.

Recent studies have extended the range by about 2,400 km southwards, when specimens were found in the National Park Chapada dos Guimarães, Mato Grosso, Brazil.