Aberrant phenotypes of Anopheles darlingi with basal dark scaling on either one or both of hindtarsomeres 3 and 4 are reported from Belize. Based on wild-caught females and adults reared from wild-caught larvae, it appears that approximately 8% of the natural population bears some degree of basal dark scaling on these hindtarsomeres. The occurrence of similar variants in other species of the subgenus Nyssorhynchus is summarized, and their significance is terms of inaccurate species identification is noted.