As a wildlife photographer, I’m always on the lookout for interesting subjects in nature to photograph. During a recent walk at the Sequoyah National Wildlife Refuge in Oklahoma, I came across something unusual attached to a blade of Johnson grass. It was a white, fluffy egg sac, clearly made by a spider, but very different from others I’ve seen.

White, Fluffy Egg Sac

White, Fluffy Egg Sac

Most spider egg sacs are encased in silk, giving them a smooth, fabric-like appearance. But this one looked like it was made of tiny, fuzzy white hairs clumped together, almost like a cotton ball. I didn’t see any spiders nearby or other insects that may have created it. Just this lone white egg sac, swaying gently in the breeze.

In contrast, an insect cocoon, like that of a caterpillar, is made of silk. Caterpillars produce and spin the silk around themselves, forming a protective casing in which to pupate and transform into butterflies or moths. Cocoons are typically smooth on the outside, not hairy.

I’m still uncertain what exact species created this mysterious white egg sac. If you have seen an egg sac like this before and know the spider responsible, please leave a comment! I’d love to pin down the identification. As a wildlife photographer, I enjoy learning as much as I can about the natural things I photograph so I can understand and appreciate them better. Even just a small egg sac like this has its own unique story. With the help of fellow nature lovers, I hope to unravel the mystery of this fluffy white cocoon. What species do you think crafted this intricate egg sac and selected this blade of grass as its nursery? Let me know your thoughts!

As a photographer, I love finding unique examples of nature like this unusual fluffy egg sac. It was a serendipitous encounter that allowed me to observe a spider’s ingenuity up close. Discovering little mysteries like this is what makes exploring the outdoors so rewarding. I’m glad I had my camera with me to document this fleeting moment in nature. It serves as a reminder to keep my eyes open because you never know what wonders you might stumble upon, even in a familiar place.

Note: If you found this look at a unique spider egg sac interesting, you may want to check out another post I wrote a while back called “Spider Egg Sac On Leaf“. In that post, I describe coming across a different type of egg sac attached to a leaf on the forest floor while hiking in the Ouachita National Forest in Arkansas. That silk egg sac had a very smooth,fabric-like texture compared to the fluffy white one shown here. It’s fascinating to see the variations in spider egg sacs and web constructions.

Equipment Used:

  • Camera: Canon EOS R5
  • Lens: Canon RF 100-500 mm F4.5-7.1 L IS USM

Technical Details: First Photo

  • Location: Sequoyah National Wildlife Refuge (Oklahoma)
  • Date and Time Taken: July 23, 2023 (07:30A. M.)
  • Program: Manual
  • Aperture: f8
  • Shutter speed: 1/800
  • ISO: 5000 (Auto)
  • Exp. Comp.: +0.7
  • Focal Length: 500 mm