2
$\begingroup$

We have these little insects in our house, they look brown and round to the naked eye, they seem to be somewhat attracted to light since we found a cluster of ~6 on the wall next to a light, otherwise we find them one here and one there.

They are very very small, can barely tell what shape they are without magnification, they look almost like a dot.

Images below are taken with a loupe with 30x and 60x magnification but they are of squashed bugs so not the greatest photos, sorry. Will post pictures of live ones if I find more.

Location: San Jose, California, USA

Full quality images: https://drive.google.com/drive/u/0/folders/15FU-KEzqmXy7s69VfmA1UJoM_o0elWWz

enter image description here enter image description here enter image description here enter image description here

EDIT: added some images of live insect on the wall, no magnification, 30x and 60x to the drive folder.

$\endgroup$
4
  • 1
    $\begingroup$ Great pictures! Can you update your question with your location? $\endgroup$
    – acvill
    Aug 11 at 2:38
  • $\begingroup$ Mist with alcohol for better unsmashed photos. $\endgroup$
    – DKNguyen
    Aug 11 at 2:39
  • $\begingroup$ Woops, this is in San Jose, California, updated question as well. Also took some pictures of a live insect on the wall with and without magnification and added to the drive folder. $\endgroup$
    – Legion
    Aug 11 at 7:55
  • $\begingroup$ if you can please sit some on graph paper or a ruler to photograph, then their size can be known. $\endgroup$ Aug 11 at 10:15
2
$\begingroup$

The beetles are about 3mm (1/10 inch) long - so not any wood eating beetle. That's good.

The elytra (wingcase=main body) has parallel lines. The antennae have the terminal 3 segments enlarged, so not cigarette beetle.

Looks like the drugstore beetle, Stegobium paniceum.

http://en.wikipedia.org/wiki/Drugstore_beetle

If you can easily get a pheromone trap, that will help confirm by catching the male beetles.

enter image description here

Photo from wikipedia.

$\endgroup$
3
  • $\begingroup$ i looked for pheromone traps for drugstore beetle but can't find them, closest I found was this trap that says cigarette beetle and someone in the comments mentions that it also worked for drugstore beetles, which sounds odd, any thoughts? amazon.com/JF-oakes-Pantry-Beetle-Pre-Baited/dp/B006J9IK08 $\endgroup$
    – Legion
    Aug 11 at 17:22
  • $\begingroup$ I only found the idea of pheromone traps online - I've never lived in an area that has this beetle as a problem. Anyway, those photos are quite good, see if you can get one of the antennae. $\endgroup$ Aug 12 at 10:50
  • $\begingroup$ there should be a half decent picture of the antennae in the drive folder, I am hoping to remember to take another one with a ruler next to the beetle, once I have that I will try to repost the drive folder images here as well. As for the trap, I found one on amazon for $20, will first comb through my kitchen to see if I have an infestation, otherwise they just look lost, a few here and there, some even in the bathroom, not a lot in the kitchen. $\endgroup$
    – Legion
    Aug 13 at 5:45

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.