"Halictus acrocephalus" . "Halictidae" . "Halictus acrocephalus Bl\u00FCthgen 1926" . "Insecta" . . "Arthropoda" . . . . . . . "Halictus" . "Bl\u00FCthgen 1926" . "Hymenoptera" . . . . . . "Animalia" .