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Albert Jan Becking: Knautien-Sandbiene . Andrena hattorfiana (Fabricius 1775) . Knautiabij
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Albert Jan Becking: Knautien-Sandbiene . Andrena hattorfiana (Fabricius 1775) . Knautiabij
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Albert Jan Becking: Knautien-Sandbiene . Andrena hattorfiana (Fabricius 1775) . Knautiabij
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Albert Jan Becking: Gemeine Sandbiene (?) . Andrena flavipes (Panzer 1799) . Andrène à pattes jaunes
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Albert Jan Becking: Gemeine Sandbiene (?) . Andrena flavipes (Panzer 1799) . Andrène à pattes jaunes
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Albert Jan Becking: Veränderliche Lockensandbiene (?) . Andrena varians (Kirby 1802) . Variabele zandbij
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Albert Jan Becking: Veränderliche Lockensandbiene (?) . Andrena varians (Kirby 1802) . Variabele zandbij
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Albert Jan Becking: Wald-Sandbiene / Wald-Lockensandbiene (fem.) . Andrena fucata . Painted Mining-Bee . Gewone rozenzandbij
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Albert Jan Becking: Wald-Sandbiene / Wald-Lockensandbiene (fem.) . Andrena fucata . Painted Mining-Bee . Gewone rozenzandbij
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Albert Jan Becking: Knautien-Sandbiene . Andrena hattorfiana (Fabricius 1775) . Knautiabij
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Albert Jan Becking: Knautien-Sandbiene . Andrena hattorfiana (Fabricius 1775) . Knautiabij
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Albert Jan Becking: Aschgraue Sandbiene . Andrena cineraria (Linnaeus 1758) . Ashy mining bee . Asbij
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Albert Jan Becking: Weiden-Sandbiene . Andrena vaga (Panzer 1799) . Grey-backed Mining bee . Grijze zandbij