Ascosphaera apis

Ascosphaera apis
Scientific classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Eurotiomycetes
Order: Onygenales
Family: Ascosphaeraceae
Genus: Ascosphaera
Species:
A. apis
Binomial name
Ascosphaera apis
(Maasen ex Claussen) L.S.Olive & Spiltoir, 1955

Ascosphaera apis is a species of fungus belonging to the family Ascosphaeraceae. It was one of the first entomopathogen genomes to be sequenced. It has a cosmopolitan distribution.

It causes the chalkbrood diseases in bees, which rarely kills infected colonies but can weaken them and lead to reduced honey yields and susceptibility to other pests and diseases.