Termite or mold

Hi

Anyone have any idea what are these dots or stain means on the floor board observed at the crawlspace? Thanks

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I am not seeing any indication of WDI / (Sub-Terranean) Termite (as seen in this photo area) within this photo.

2nd photo looks like there is a leak in the dryer vent. All that lint collected around the wiring and the side of the joist. If there is a leak, that means moisture in the area. Probably mold / mildew. Fix the duct leak.

Looks like mold termites. They love mold.

Camel cricket crap

I am with Wilson. Wilson knows his crap.

I concur with Wayne as well

Over spray when the stenciled the plywood.