My name is Dr Margriet Dogterom and am the founder and owner of Beediverse. I write this blog for all who love bees and who want to learn more about these wonderful creatures.

Monthly Archives: December 2013

Hi,   I have a number of bees at one of my houses this year. I’m familiar with the Blue one but wondering what the reddish –Brown one is? Would appreciate any assistance identifying. Thanks  Norm.

Looks like the reddish one is Osmia cornifrons.

 

 

   When bee finds a nesting tunnel in wood, plastic or some other material, the female bee will place mud inside the cavity to create the perfectly shaped cavity for her offspring. 

 

This photo shows two nesting tunnels (half of two nesting tunnels) containing two cocoons inside their mud cavities.  

When nesting trays are not completely snapped togethr, a gap is present and lets air into the nesting tunnel.  Consequently the mason bees muds over the gap  forming a super – wall.

From summer to early winter place mason bee homes inside a net bag.  This will prevent your mason bees from being parasitized while they are inside their cocoons over the winter.

Tiny parasitic wasp of mason bees

Margriet,

Can you verify that this picture is a Parasitic Wasp (or not)?

Thanks.
Valeri Wade
Wild Bird Chalet
705 Kentucky Street
Bellingham, WA 98225
360-734-0969
 

 

Hi  Valerie, Thanks for sharing this photo with us and our friends.  Yes this tiny little wasp is a parasitic wasp of mason bees (and other insects).  You can see from the size of the cocoon in the background how tiny this critter really is!  At the moment that this picture was taken, this wasp was listening for bee movement inside the cocoon  ( it hears with its antennae).  Only live bees are parasitized!!  Great picture Valerie.

 
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