Entomology (Study of Bugs)/bug nest

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Question
When I un-rolled my outdoor blinds, I found insect nest(s); wondering what bug did this.  The nest was made of 1 inch pieces of straw, the length of the blinds filled w/this in the center of the 'roll'.  Inside straw (grass?), fuzzy white ovals, about 3/4 inch long.  Some spots had bug larva (?) - looked like mice poops, but they had ridges like beginner bugs.  I rolled blinds back up until I know if these things are going to be evil (termites, carpenter ants...) or just moths...thanks for any help you can offer!

Answer
Libby:

Sounds to me like the nest of a "grass-carrier" wasp, family Sphecidae, genus Isodontia .  They are solitary, each female making her own nest, and while they usually nest in natural cavities they have taken a liking to window tracks and other such man-made shelters.  Here's an example:

http://bugguide.net/node/view/348775#729455

I also did a couple of blogs about them, encouraging folks to tolerate their nests:

http://bugeric.blogspot.com/2011/02/wasp-wednesday-audition-video.html

and

http://bugeric.blogspot.com/2011/02/wasp-wednesday-more-on-isodontia.html

So, they are not going to hatch into anything harmful at all.  The female wasps can sting, but only if you physically handle them.  I recommend catching any "indoor" wasps in a jar and setting it free outdoors.

Eric

Entomology (Study of Bugs)

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Eric R. Eaton

Expertise

I answer insect and spider identification questions ONLY. Attach images if possible. No "what bit me?", "what do I feed this bug in captivity?", or science fair project questions please. NO TECHNICAL QUESTIONS ABOUT INSECT PHYSIOLOGY.

Experience

Principal author, Kaufman Field Guide to Insects of North America. Professional entomologist employed previously at University of Massachusetts, Chase Studio, Inc., and Cincinnati Zoo; contract work for West Virginia Department of Natural Resources, Smithsonian Institution, and Portland (Oregon) State University.

Publications
Author, Kaufman Field Guide to Insects of North America, Missouri Conservationist magazine, Ranger Rick, Birds & Blooms, Timeline (journal of the Ohio Historical Society). I have contributed to several books as well.

Education/Credentials
Oregon State University, undergraduate major in entomology, did not receive degree.

Awards and Honors
One of the top 50 experts in all categories for AllExperts.com, 2009.

Past/Present Clients
Principal author of the Kaufman Field Guide to Insects of North America, Smithsonian Institution (contract), Cincinnati Zoo (employer), Portland State University (contract), Chase Studio, Inc (employer), Arkansas Museum of Discovery (guest speaker). Currently seeking speaking engagements, leadership roles at nature festivals, workshops, and ecotours.

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