How to request an insect identification from extension

A local extension service or diagnostic laboratory may be able to help identify a household insect. Services, fees, eligible locations, and submission methods vary. Start with the service’s current instructions rather than mailing an unsolicited specimen.

The University of Minnesota’s insect-contact page is one example of an official route for insect questions. Use the appropriate service for your location and the kind of finding involved.

Choose the right kind of help

An insect identifier answers a different question from a building inspector or clinician. Choose the service by the unresolved question rather than sending the same urgent message to every contact you find.

Your question	Appropriate starting point
What insect is in this photograph or sample?	Your local extension office or a university diagnostic service that accepts household insects
How extensive is activity inside the property?	A qualified pest professional offering an on-site inspection
Is damaged wood structurally sound?	An appropriately qualified building professional
Do symptoms need medical care?	A healthcare professional; include relevant exposure facts privately
Is unknown wildlife occupying the attic?	A qualified wildlife professional or the relevant local agency

The Minnesota insect contact page is an example of a location-specific service, not a nationwide submission inbox. Penn State also publishes insect identification instructions. Check the service that fits your location before using either route.

Prepare the minimum useful context

Write a short description containing the state or region, indoor or outdoor setting, date, exact surface, approximate body size, and any directly observed behavior. Keep the description factual. “Found on a windowsill” is more useful than “came out of the wall” unless you saw that happen.

Link or attach clear original images only through the recipient’s requested method. Include an overview and a close-up if both add information. Our photo checklist can help organize them.

A message you can adapt

Subject: Household insect identification request — [state/county] — [observation date]

“Hello, I found the attached insect on [exact accessible surface] in [indoor/outdoor setting]. I observed [number actually seen] on [date]. Its body was approximately [length, measured or estimated], excluding [antennae/wings if relevant]. It was [moving/not moving when observed]. Photo A shows the location; photo B shows the body. I have not confirmed a species. Can these images support identification, and do you accept this type of request from my location?”

Add one sentence about associated evidence only when you actually found it. For example, describe a damaged package as a separate observation. Do not present a nearby stain as the insect’s waste unless that connection was confirmed.

Before sending a physical sample

Confirm eligibility, any fee, submission form, and packaging instructions directly with the recipient. Ask whether the specimen should remain dry or needs preservation; do not choose a liquid from another service’s directions. Never send loose insects, contaminated waste, or a live potentially harmful animal in ordinary correspondence.

Keep a copy of the submission and its record number. If you have not received an answer, check the published response window before following up. Avoid repeatedly collecting new material while waiting unless the service requests it.

Interpret the answer at its actual level

“Beetle,” “carpet beetle larva,” and a named species are different levels of identification. Preserve the wording the identifier used. Ask what that finding means for the particular item or room, and whether an on-site inspection remains necessary. A correct insect name does not by itself explain the source, the population, or the condition of a whole property.