What's this? A pictorial guide to things found in nesting holes.
Various cocoons
Blue Orchard Bee | Hornfaced Bee | Osmia Coloradensis or Osmia Californica | |
Leafcutter | Wasp (bullet) | Wasp (grass) | summer bee/wasp |
Wool Carder |
Pests to Hole-Nesting Bees
Pollen Mites | Chalkbrood | Houdini Fly Larva | Houdini Fly Adult |
Pollen mite on mason bee | Mono holes in tubes | Mono - parasitic wasp | Pteromalis - leafcutter wasp |
Earwig | Carpet beetle |
Things in a Nesting Hole
Mud nesting wall | Mason bee feces (larva poop) | Yellow Pollen Ball | Orange Pollen Ball |
Mason bee egg | Bee Larva |
For more information regarding these pests, visit our Learn page. There are several pages depending on what time of year you found the pest.
Related Articles
Various hole-nesting pests
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