Halictus (Halictus) simplex BLÜTHGEN, 1923

A polylectic species, known to collect pollen from Caentaurea jacea, Cichorium intybus (Asteraceae); Knautia arvensis (Dipsacaceae). (Westrich, 1989).

Ebmer (1969) lists Mentha, Thymus, Ajuga genevensis, Teucrium (Lamiaceae); Solidago, Centaurea (Asteraceae); Erica carnea (Ericaceae).

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