Category Archives: 2015

Resin with Debris Plugs & Dianthidium

  As the nights cool and the leaves start to turn in the high country of Colorado, we find one of our Autumn bees laboring away. She’s collecting pollen to provision her nest, along with a smattering of sticks, stones, and resin that … Continue reading

Posted in 2015, Nest Plugs, Plugs and Bugs | 1 Comment

Mud “Plugs” (part 2) & Auplopus

What is THAT?  Looking a bit like a dried up worm, this is a series of mud-lined cells constructed by a wasp in the genus Auplopus.  This unique nest is one of the more bizarre we have found in our … Continue reading

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Plant Fuzz Plugs & Anthidium

What’s white, furry, sits in a bee block, and looks like a joke? An Anthidium nest plug made from Plant Fuzz! Seriously, it looks like someone stuffed a cotton ball into the nesting tunnel(s). Well, someone – or something – … Continue reading

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Silk Plugs & Hylaeus

One of the less common types of nest plugs we get in our bee blocks are the Silk plugs made by the yellow-faced or masked bees, Hylaeus species.  They are a real treat for those who do see them, often … Continue reading

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Grass Plugs & Isodontia

Like the Little Pig who made his house out of Straw, we have wasps that make their nests out of straw too.  Our Isodontia wasps use only Grass to create their cell partitions and nest plugs.  These inch-long gentle giants … Continue reading

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Boulder County Open Space and City of Boulder Open Space blocks

The Bees’ Needs was very excited to receive funding from the Boulder County Parks and Open Space (BCPOS) this Spring to document nesting bee and wasp diversity and abundance in six natural habitat types on BCPOS properties. This research will … Continue reading

Posted in 2015, Bee Blocks, Nest Plugs | 2 Comments

Chewed Vegetation Plugs (part 2) & the Megachile who make them

Earlier this spring we talked about the mason bees, Osmia and Hoplitis, that made plugs from chewed vegetation.  Then, the last Plugs & Bugs post focused on Megachile that use whole leaf or petal pieces.  Now we are combining the … Continue reading

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