In the period of 19 August until 6 September the garden was visited by a very rare introduced species, the Grass carrying wasp (Isodontia mexicana) ^[1].

In that period the female constructed seven nests in bee hotel nesting blocks 2 and 10, respectively seven in bamboo stems and one in a borehole in stone, that were provisioned with bush crickets among them male Southern oak bush crickets ♂︎ (Meconema meridionale).

The observation is subject of the publication Observations on nest construction and behaviour of sphecid wasp Isodontia mexicana (Hymenoptera: Sphecidae) nesting in Zuid-Holland

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Literature

¹ Nederlands Soortenregister