Not much bigger than an inch.
Brown morph California mantis? Found with green morph nearby.
Green morph California mantis? Found with brown morph.
After researching this "mystery cocoon" attached to the bark of a tree along the trail (about 1.5"), it appears to be an "ootheca", or the egg case of a mantis (perhaps a praying mantis or carolina mantis?). Cool pics online of the babies emerging from these.
Mantis landed on my windshield
A volunteer spotted a mantis egg case with MANY babies hatching out! Egg case was next to the Bird Viewing Platform in the NHMLA's Nature Gardens. Photo by Ashley Hall.