フィールド日記

樫の木の葉の上で越冬しているミノオキイロヒラタヒメバチを見つけました。足を水平に開き、ぴったりと葉にくっついていました。この葉にだけ4匹が集まっていたので、集団で越冬する性質があるようです。ヒメバチは他の昆虫に寄生する寄生蜂として知られています。


I found a group of ichneumon wasps which is staying over the winter on a leaf of oak tree. They are called "Minoo-Kiiro-Hirata-Himebachi (ミノオキイロヒラタヒメバチ)". They horizontally stretched their legs and clung to the leaf. As they are seen only on the leaf, they seem to have a habit to stay over the winter as a group. Ichneumon wasps are known as parasitoid wasps that parasitize other insects.