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Beetle With Humpy Back
Location: Singapore
March 4, 2012 5:27 pm
Hi again, but what is this curious looking beetle with strange bumps at its back. We sometimes see this during our outdoor trekking in one forest trail here. Thanks.
Signature: Antonio

Darkling Beetle

Our automated response
Thank you for submitting your identification request.
Please understand that we have a very small staff that does this as a labor of love. We cannot answer all submissions (not by a long shot). But we’ll do the best we can!

Hi,
Thanks. I understand. But can you possibly reply back if ever the bug is identified and is posted in your site, at least I would be notified. Thanks again. 🙂

Hi Antonio,
We do not recognize your Beetle, but we have posted the photo.  Leave a comment on the posting and you should be notified in the future if we receive a comment that identifies your fascinating creature.  It somewhat resembles a Leaf Beetle in the family Chrysomelidae, but we don’t believe that is correct.  Eric Eaton once wrote that if we are unsure of the family, a good bet to check is the Darkling Beetle family Tenebrionidae.  We are linking to both the BugGuide Leaf Beetle page and the BugGuide Darkling Beetle page even though Bugguide is a North American insect site.

Update:  November 2, 2015
We just received a comment from Dominik Hofer identifying this as
Phymatosum rufonotatum.  In addition to the FlickR link, it is also pictured on Beetles@SG Blog.

What's That Bug? does not endorse extermination
Location: Singapore

9 Responses to Darkling Beetle from Singapore

  1. Bugophile says:

    I was looking through some Singapore beetle photos, and while I didn’t see any matches, I did see some Fungus Beetles that had some funky formations on their elytra and they also had similar swellings on the shiny upper legs. Just my 2 cents (Canadian).

  2. Cesar Crash says:

    I thought I made a comment, it seems that I forgot sending it(!).
    There are three photos in this page http://flickrhivemind.net/Tags/fungusbeetle/Recent and another one here: http://sgmacro.blogspot.com/2011/03/celebrating-early-christmas-at-dairy.html, but none of them gives us an ID.

  3. Bugophile says:

    Further searching led me to the Strohecker collection of Handsome Fungus Beetles: http://www.ent.uga.edu/mchugh/Strohecker%20Files/Strohecker%20Genera%20Pages/Amphisternus.htm. I didn’t find any exact matches, but I think Antonio’s beetle must at least be a cousin to one of these guys, or one of the other similar genera. Aside from the distribution of the bumps, the main differences I see are the striations on the elytra, and the fact that Antonio’s seems a little narrower through the abdomen.

  4. Cesar Crash says:

    Your images looks simmilar, Bugophile. The helitrum striation are present in the A. verrucosus. There is another genus, the cacodaemon, but the most of them or much more “spiny”.
    http://www.forestryimages.org/search/action.cfm?q=cacodaemon
    ForestryImages.com has an impressive collection of 1001 images of fungus beetles http://www.forestryimages.org/search/action.cfm?q=fungus%20beetle, many of them have the same protuberance in the helytrum. Spathomeles also call me the attention http://www.forestryimages.org/search/action.cfm?q=Spathomeles.

  5. David says:

    This is a Darkling beetle.

  6. Dominik Hofer says:

    Tenebrionidae, Phymatosum rufonotatum.
    https://www.flickr.com/photos/davegball/15213609580

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