Entomology (Study of Bugs)/Expert Profile

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I can answer questions about invertebrates native to California, including insects commonly found in homes. If you have an identification request, please attach a photo to your question.

Experience in the area

I was involved in collection and identification of invertebrates for the United States Geological Survey, Biological Resources Division for six years. Also, I provided these same services intermittently for the UC Davis John Muir Institute of the Environment for many years. I have been a member of AllExperts.com since 2009.


Department of the Interior: United States Geological Survey, Davis Field Station; University of California, Davis Aggie Alumni Association; UC Davis Center for Neuroscience; U.S. Department of Veteran's Affairs


I have two B.A.'s from the University of California, Davis and two Associate's degrees from Sacramento City College.

Awards and Honors

Special Thanks for Achieving Results award from the Department of the Interior

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Average Ratings

Recent Reviews from Users

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Ross05/05/16101010Her answer was clear and helpful. Tx .....
Angela04/28/16101010Thanks, Jessica!
Alejandro ladino04/25/16101010excelente respuesta, de mucha ayuda saludos desde .....

Recent Answers from Jessica Mellinger

2016-09-30 Can you please identify this bug:

Hi Diana,    I am very sorry for any discomfort you may be experiencing. Make sure to clean the bite with soap and water and watch for unusual symptoms. Consult a doctor if you notice any symptoms that

2016-08-15 insect looks like dried leaf:

Hello Jill,    The photo is of a moth called an Achemon Sphinx moth (species: Eumorpha achemon). Great photo! It is probably attracted to your patio because of some lights there or because of the plants

2016-08-13 insect looks like dried leaf:

Hi Jill,    You forgot to attach the photo! Send it to me and I will identify it for you.    Thanks,  Jessica

2016-07-27 What is this brown, leaf shaped bug?:

Hi Rosita,    I am sorry about what you have been through, and would like to help you. It does sound like some insect has been biting you, but carpet beetles don't bite, so it is important that we identify

2016-07-21 Mud nest:

Hi Stephen,    It was made by a mud dauber (wasp). There are many different kinds of mud daubers, but they generally aren't aggressive until threatened. It looks like the nest might be inhabited from your


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