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Krenn, H.W., H; Volker Mauss; John Plant (2002). "Evolution of the suctorial proboscis in pollen wasps". Arthropod Structure & Development. 31 (2): 103–120. doi:10.1016/S1467-8039(02)00025-7. PMID18088974.
nih.gov
pubmed.ncbi.nlm.nih.gov
Krenn, H.W., H; Volker Mauss; John Plant (2002). "Evolution of the suctorial proboscis in pollen wasps". Arthropod Structure & Development. 31 (2): 103–120. doi:10.1016/S1467-8039(02)00025-7. PMID18088974.