My and from @rmc have been rather prolific lately. The coriatae prefer to hide their eggs in the sand and in spawning mops (some end up on filter parts). The fuscoguttatus like to lay their eggs against the glass, on spawning mops, and on the HOB filter parts.
Here's a video showing the setup and the fry and eggs. Enjoy.

Cheers, Eric
Corydoras coriatae: fry, eggs, parents & tank setup