Anyone out there know which species of chalkbrood attacks Osmia? or is the
material just mould on the pollen.
 
If not, here is a contact for someone who might know, or might be interested in
getting some samples to find out. He has worked extensively on the moulds,
yeasts and bacteria of leafcutter bee nesting material. Also on the use of
paraformaldehyde as a nest fumigant.
sorry I don't have a high tech address for him.
  D. W. Goerzen
Saskatchewan Alfalfa Seed Producers Association
107 Science Crescent
Saskatoon, SK CANADA
        S7N 0X2
good luck
 
Kerry Clark, Apiculture Specialist
B.C. Ministry of Agriculture
1201 103 Ave
Dawson Creek B.C.
        V1G 4J2  CANADA          Tel (604) 784-2225     fax (604) 784-2299
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