What’s That? March 10, 2025

While walking on the Crabtree Creek Greenway this weekend, we happened to look up as we were walking under the Route 54 bridge. What is that? It looks like organ pipes made out of mud. That is the nest of the Organ Pipe Mud-dauber wasp (Trypoxylon politum).

What’s That? May 14, 2024

What’s that? What is making those piles of tunnels in the dirt hills along the trails? Miner bees! Miner bees look like bumble bees. They are fuzzy and yellow on the top half of their back, and black on the bottom half. Miner bees are ground nesting bees. Each one of those tunnels is a… Continue reading What’s That? May 14, 2024

What’s That? May 20, 2025

What are these purple and white spots on the goldenrod leaves? They are caused by a bug, a goldenrod gall midge called Asteromyia carbonifera. The bugs carry a fungus (Botryosphaeria dothidea) that protect their larvae from parasitoids. The female Asteromyia lay eggs and deposit the fungus along with the eggs on the goldenrod leaves. The… Continue reading What’s That? May 20, 2025