wasp looking insects

Asked August 15, 2017, 4:48 PM EDT

We have a maple tree and these wasps stick their very long tail into the tree....they are killing the tree.. What are they called ? And are they dangerous as far as stinging ?

Kandiyohi County Minnesota

1 Response

You are seeing Pigeon Tremex Horntails. They may be part 1. Part two is another insect that searches for the eggs laid by the Horntail and lays its own eggs in the same hole. Those larvae consume the Horntail larvae. It is an interesting process. They do not sting. Usually they lay their eggs in declining trees. Here is a link to a publication on them: http://extension.colostate.edu/topic-areas/insects/pigeon-tremex-horntail-and-the-giant-ichneumon-wa...