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TheWaterbug
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Yet another "What bug is this?" thread

These are all over my pumpkin plants:

Image

Does anyone know what these are?

I tried googling "black white striped beetle squash" and the closest match was "Striped Cucumber Beetle," but all the descriptions of said beetle say "yellow," and my bug is definitely white. They're about 3/16" long, and I saw a bunch of them mating this morning. Grrrr.

Does anyone know of a good bug database where we can search by body type/size/color/location? I tried this [url=https://www.insectidentification.org/]InsectIdentification.org[/url], but searching for "black white insects California" [url=https://www.insectidentification.org/insect-search-results.asp?MM_insert=form1&search=White&search2=Black&search3=Insecta&search4=California&Submit=Search+the+Database]returned 10 results[/url], none of which matched my bug.

Anyone know of a better site for searching bugs?
Sunset 23/USDA 11a, Elev. 783', Frost free since 8,000 BC. Plagued by squirrels, gophers, and peafowl, but coming to terms with it!

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applestar
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Have you tried bugguide.net ?

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TheWaterbug
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applestar wrote:Have you tried bugguide.net ?
I just looked at it. It's a great site for finding info on a bug you've already IDed, but not so good for "what bug is this?"

I'm looking for something that will let me enter color(s), size, range, food, etc., and return a list of possible matches.

Unless I'm missing that section of bugguide.net, but I don't see anything like that on the page. I tried their "search" field, but it doesn't return anything at all.

The insectidentification.org I linked above has the right idea, but just doesn't seem to have a very large database.
Sunset 23/USDA 11a, Elev. 783', Frost free since 8,000 BC. Plagued by squirrels, gophers, and peafowl, but coming to terms with it!

Smallgardener
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I think it is a cucumber/western rootworm beetle. It could just be a color variation due to environment or food source. The western corn rootworm beetle is a major pest in field corn. They feed on the roots of the corn when they are in the larvae stage.
https://www.clemson.edu/extension/hgic/pests/plant_pests/veg_fruit/hgic2207.html

DoubleDogFarm
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Lema daturaphila

The cucumber beetle and three striped potato beetle look alot alike.

https://insects.oeb.harvard.edu/boston_islands/MantisWeb/FMPro?-DB=Image.BHI&-Lay=web&-Format=images_bhi.htm&Species_ID=9102008&-Find

Take a look. I can't tell by your photo.

Eric

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rainbowgardener
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Bugguide.net is searchable, it just works a little differently than most searchable db's.

On the home page here:

https://bugguide.net/node/view/15740

on the left side it says "clickable guide" and has silhouettes of various insects. Click on the one that is like what you are trying to ID.

If you click on the beetle shape, it will take you to this page:

https://bugguide.net/node/view/60

It shows 8 pictures, representing different suborders of beetles. Click on the one that it close to yours and you can keep on narrowing it down like that.
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