Spotting

Here is the spotting: http://www.projectnoah.org/spottings/626...

Seen them around/inside my house.
Organ Pipe Mud Dauber's Home, Trypoxylon politum

Fascinating nests. From what John says it looks pretty safe to put the scientific name to Trypoxylon sp. if not Trypoxylon politum

Thank you very much for your commnets and knowledge about this spotting Mr. La Salle.

Have a look at the organ pipe mud dauber, Trypoxylon politum - the nests look similar.
https://en.wikipedia.org/wiki/Organ_pipe...
Or just google "organ pipe mud dauber nest" and have a look at the pictures - many look quite similar.
Problem is that I am not sure how far south this species goes (I have seen it listed as eastern US and Canada), so no idea if it extends to Panama. Maybe something similar down there. Apparently there are lots of species of Trypoxylon, but most of them do not form the mud nests.
The common mud dauber in places I have lived have been species of black and yellow mud daubers in the genus Sceliphron - but the nest looks different from your pictures.

Thanks to all, specially to La Salle. I know is a wasp's abandoned nest, but don't know the specie. Maybe next time I can take a better picture.

http://www.projectnoah.org/spottings/170...
http://www.projectnoah.org/spottings/172...

One of mine has a spider in the abandoned nest

I saw these in Belize. Our guide called them Pipe Organ wasp.... but I haven't found a scientific name yet

Please consider adding this spotting to the Animal Architecture mission at http://www.projectnoah.org/missions/8082...

Most likely made by some type of mud dauber wasp.
They construct these tubes out of mud, and them pack them with prey (usually spiders or caterpillars). They then lay their eggs on the prey, and the larva eats it to complete its development.