I suspect that these bugs/Insects on the solder mask surface were alive at some point.   These are not embedded into the solder mask.   I can see the 3D dry shell of each Insect/Bud.   Then there are others that are just body parts as if they just exploded.   I also see what appears to be a lot of dropping.   BTW I suspect that these sample was from a server farm exposed to the elements or with minimal filtering of the ambient.
Victor,

-----Original Message-----
From: Grossmann, Günter [mailto:[log in to unmask]]
Sent: Thursday, September 19, 2013 8:39 AM
To: TechNet E-Mail Forum; Hernandez, Victor G
Subject: AW: Bug / Insects skeletal

Yes they can

In my first job at Mettler/Toledo we had a dead bug shorting two components, causing wrong readings on the balance.

Regards

Günter

> -----Ursprüngliche Nachricht-----
> Von: TechNet [mailto:[log in to unmask]] Im Auftrag von Victor Hernandez
> Gesendet: Donnerstag, 19. September 2013 15:05
> An: [log in to unmask]
> Betreff: [TN] Bug / Insects skeletal
>
> Fellow TechNetters:
>
>   Can the remains of Insects/Bugs skeletal on the surface of a
> motherboard cause a functional failure before they died?
>
> Victor,
> > __________________________________________________________
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