Liquid from grapevine beetle

[All About Arthropods]

Hi Everyone!

I wanted to know if anyone has heard about yellowish-white liquid coming out of grapevine beetles' back side? I have two females and they both do that, just wanted to know if something was wrong with them or if it is normal.

Thanks!

 

[Beetle-Experience]

Sounds like frass, Phileurus valgus will do that a lot when you handle them too...