What's That Bug? does not endorse extermination

Subject: Barnacle-like insect found
Location: Los Angeles, CA
December 1, 2015 4:02 pm
Dear bugaman,
We noticed this oval, barnacle-like, 1″ long larva (?) attached to the underside of our wooden fort today. We are very curious what it might be!
We touched it very gently. – the spine is smooth and slick .
Signature: Moses, age 3 and his Mama

California Mantis Ootheca

California Mantis Ootheca

Dear Moses and his Mama,
This is an ootheca or egg case of a native Preying Mantis in the genus
Stagmomantis, most likely the California Mantis, Stagmomantis californica.  See this BugGuide image for comparison.

Thank you so much! We had continued to investigate and thought it was preying mantis – we are so grateful for the confirmation and details.

What's That Bug? does not endorse extermination
Location: Los Angeles, California
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