Leucocoprinus pusillus is a species of mushroom producing fungus in the family Agaricaceae.

[3] Leucocoprinus pusillus is a small dapperling mushroom with thin (up to 1mm thick) whitish flesh which discolours brown.

Gills: Free, crowded and whitish but discolouring yellowish white or brown with age or upon drying.

L. pusillus is scarcely recorded, little known and may be confused with numerous other Leucocoprinus or Leucoagaricus species.

The specimens studied were growing individually on manure rich soil in the state of Kerala, India.