Buggin' Out On Thursdays :: Mystery of the Bug Butts

Found! Bug butts sticking out of some dried mud on a fence post has me stumped! What were they doing there? Are those wasps butts? Did they nestle in from the cold and get frozen in time? How bizarre!

It's Buggin' Out On Thursdays!

Here's a close-up (below) of one of them sticking out of the mud.

What is it?

What kind of bugs have you seen lately?