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Black Beetle with 4 Yellow Spots on Lucifer Bulb.

Posted by eigdeh z6 NJ (My Page) on
Thu, Apr 15, 10 at 17:27


Planted Crocosmia 'Lucifer' last year and only half are shooting up greenery. Probably not unlikely that the others will still shoot up stems soon, but I got curious and dug down to the side of a plant that is still all brown. Bulb looks good except for one spot where I saw two black beetles about 3/8 of an inch long and they both had 4 small yellow spots on their back. Where they were on the bulb there is a soft spot perhaps half inch wide and 1/4 inch deep. Should I be concerned? Are there beetles that attack bulbs? Wonder if the soft spot came first or the beetles.

Anything I should do? Are they going to attack all my bulbs? I have tulips, daphodils, Iris, and lillies in the same bed.



Follow-Up Postings:

RE: Black Beetle with 4 Yellow Spots on Lucifer Bulb.

A good website for bug ID is BugGuide. If you scroll down you can see all the different photos of beetles. If you have a photo of your own you can go to What's That Bug? and post a query.


What's That Bug?

Here is a link that might be useful: BugGuide

RE: Black Beetle with 4 Yellow Spots on Lucifer Bulb.

Thanks Linrose!

I went to the bugguide and it looks like this:

So I am pretty sure it is a Sap beetle (Glischrochilus fasciatus).

I am guessing that there is sap in the Lucifer bulb and that the bulbs might be in trouble. :c(

Anything one can do for this?

Here is a link that might be useful: Sap beetle (Glischrochilus fasciatus)

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