Fungus in my terrarium

[Marvinxox]

I just came back from a five day vacation and found a mushroom (about 1.5-2 cm/ 0.6-0.8 inch) in my terrarium.
I think the guy responsible for caring about my plants has sprayed it way too much, which is also the reason why it looks so wet in the pictures.

Does anyone know, if the fungus might harm my mantis and how I could get rid of it?

 

[Ryunss]

To me this looks like Leucocoprinus birnbaumii I’m not sure if it will be harmful for your mantis but it is probably not a good thing that it’s in there. To get rid of it I’d do a full clean out of the enclosure.

 

[Patherophis]

Whatever it is, it is harmless for Your mantis. Soil fungi are not capable of attacking insect. Just throw it away and keep substrate drier.