The evolution of the lipid secretions from the exocrine Dufour's glands of lactoneproducing bees (Colletidae, Oxaeidae, and Halictidae) can be specified by a cladistic analysis of molecular structure ...
A widespread field search for a rare Australian native bee not recorded for almost a century has found it's been there all along - but is probably under increasing pressure to survive. Only six ...
Krombein, Karl V. 1950. "The Aculeate Hymenoptera of Micronesia, II: Colletidae, Halictidae, Megachilidae, and Apidae." Proceedings of the Hawaiian Entomological ...
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