Ascosphaera apis
Ascosphaera apis er sveppategund sem var fyrst lýst af Maasen ex Claussen, oog fékk sitt núverandi nafn af L.S. Olive & Spiltoir 1955. Ascosphaera apis er í ættinni Ascosphaera.  Engin undirtegund er skráð í Catalogue of Life. Hann veldur svonefndum kalklirfum í býflugnarækt.

Ytri tenglar 
 Beekeeping page at the University of Georgia, with a large section on Honey Bee Disorders]
 Apiculture Factsheets at the British Columbia Ministry of Agriculture and Lands
 BeeBase at the Defra Food and Environment Research Agency in the UK
 Kohala.net  Diseases and Afflictions of Honey Bees
 Beediseases  Honey bee diseases website by Dr. Guido Cordoni.
 Býflugnasjúkdómar

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