Phlebotomus sergenti parrot, 1917: morphological and isoenzymatic comparisons of two natural populations from Tenerife (Canary Islands, Spain) and Crete (Greece).

Samples of two Phlebotomus sergenti natural populations from San Juan (Tenerife), representing the western edge of the distribution area of this species, and Axos (Crete) were collected. The morphological comparison showed marked differences in the lengths of parts of the male genitalia, female pharynx, and spermathecae. The isoenzyme study revealed characteristic monomorphic phenotypes for glucose phosphate isomerase, hexokinase, and phosphoglucomutase in the Canarian specimens as compared with the Cretan population. These results confirm the heterogeneity of P. sergenti and indicate the utility of a systematic double approach for a revision of this taxon.