This medium sized ichneumon wasp female (Ichneumonidae sp.) had possibly found a nest of her host in a bamboo stem. Through the cracks in the side of the stem she tried to reach it with her ovipositor.
Possibly it is a Cryptinae but that cannot be determined for sure based on the the photographs.
UPDATE: 2023/01/17
The wasp referenced in the article of Pieter van Breugel in edition 25 of Hymenovaria [2] gave me flashbacks to the specimen in this observation. And for sure the observation on waarneming.nl has indeed been approved. I tried to use the Hoplocryptus key [SCHWARZ, 2007] [3] as well but unfortunately especially the facial details are not visible in the photo’s.
Last season (2022) another female was active in the garden as well.
Literature
1 Nederlands Soortenregister2 Breugel van, P., (2022). Hoplocryptus confector (Gravenhorst, 1829) (Ichneumonidae: Cryptinae). Hymenovaria, 25, 32-34, https://www.hymenovaria.nl/category/publicaties/hymenovaria/
3 Schwarz, Martin. (2007). Revision der westpaläarktischen Arten der Gattung Hoplocryptus THOMSON (Hymenoptera, Ichneumonidae). Linzer Biologische Beiträge. 39.
