Tuesday, August 25, 2015

Oatka Creek Park • August 25

Green Frog

Monarch. 3rd instar.

Baltimore Oriole. The orioles have been quite noisy over the past week!

Isabella Tiger Moth caterpillar. No, it’s probably not indicating the severity of the upcoming winter!

Milkweed Tussock Moth caterpillar. This is a later instar of this caterpillar. There were a dozen or more in the immediate area. You can just see one on the other side of the leaf and a third one was just out of shot.

Question Mark. The colors were fresh and vibrant and the wings in perfect condition. Seemed like a recent emergent. It didn’t stay around for better pictures, unfortunately.

Monarch. The fly is a Tachinid Fly and is a parasite of the Monarch caterpillar. It will lay its eggs inside a 1st instar caterpillar, using it as a host. This is a 3rd instar caterpillar that has been motionless for at least 24 hours. Before spotting the fly I thought the cat was getting ready to transform into the 4th instar, and it still may be. Time will tell!

Magnolia Warbler. This appears to be a first fall female. Fall migration has begun!


Goldenrods are approaching peak color. Some of the earliest bloomers are already going to seed.

Monarch. 4th instar. Practicing the “J” shape needed for the 5th instar (cocoon phase)?