This turned black and disintegrated in two weeks. What kind of insects created this?
Growing along roadcut in redwood forest. Pileus brown, minutely granular-scaly. Lamellae thick, widely spaced; yellow to white, widely attached to decurrent. Stipe bright yellow, brittle, dry, ornamented with white granular chevrons at the apex and bright white farina at base.
http://www.inaturalist.org/observations/17418599
Likely the same as this