Does anyone know where duroid spawn?

[🔥Astral Rage🔥]

I couldn't even catch one
I was inside cave during vome cycle using vome bait
Spent good 30-40min catch not even 1

[Lee]

i got some in caves using the blue bait

[arti_llery]

Caves south side of the gutter. Use bait, either on seemed to spawn them.