other species in the genus "dactylopius" can be used to produce "cochineal extract", and are extremely difficult to distinguish from "d. coccus", even for expert taxonomists; that scientific term from the binary nomenclature, and also the vernacular "cochineal insect", may be used (whether intentionally or casually, and whether or not with misleading effect) to refer to other biological species. (the primary biological distinctions between species are minor differences in host plant preferences, along with very different geographic distributions.)