Sighting

Linda Rogan 13 Jan 2015

Peltoschema, thanks Martin, found along the Ovens River near Germantown, Vic

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Sighted 10 Jan 2015
59 Old Harrietville Road, Germantown VIC 3741, Australia

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Identifications

  • Ken Walker 14 January 2015
    Peltoschema oceanica
    (species)
    Taxonomy: Animalia: Arthropoda: Insecta: Coleoptera: Chrysomelidae: Peltoschema: oceanica
    Common Names: Beetles, Chrysomelids, leaf beetles
    Ken Walker says

    As per Martin's identification.

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  • Martin Lagerwey 14 July 2015
    Peltoschema basicollis
    (species)
    Taxonomy: Animalia: Arthropoda: Insecta: Coleoptera: Chrysomelidae: Peltoschema: basicollis
    Common Names: Beetles, Chrysomelids, leaf beetles
    Martin Lagerwey says

    I have found several similar species in the MOVM collection and determined that my specific identification of your beetle was close. Please compare with the pinned specimen in the link. http://www.bowerbird.org.au/observations/39491

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  • Martin Lagerwey 13 January 2015
    Peltoschema
    (genus)
    Taxonomy: Animalia: Arthropoda: Insecta: Coleoptera: Chrysomelidae: Peltoschema
    Martin Lagerwey says

    This beast is really tricky but you will soon know his secret. Some of the the (completely vegetarian) Chrysomelidae leaf beetles are specialist feeders of Acacia including the smallish beetles in the Peltoschema genus and a few of these mimic the ladybird beetle sush as the varied ladybird beetle in this case, and also found on acacia. In Victoria I have seen only (and often) Peltoschema orphana which has four evenly placed black dots on the pronotum. Yours is different. I have a similar specimen sent to me by a helpful friend in Brisbane. This is also a sibling to yours with one broken black transverse line at the trailing margin of the prothorax but other differences including spot pattern and color. Coccinelidae have antennae yellow and shorter than Chrysomelidae. Coccinelidae have antennae that thicken, almost clubbed at the apex. http://www.bowerbird.org.au/observations/23964 http://www.bowerbird.org.au/observations/21166

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Notes

  • Martin Lagerwey 14 January 2015
    Tagged With oceanica
    Martin Lagerwey says

    In my comment below, I identified Peltoschema orphna (fireblight beetle) but this should read - Peltoschema oceanica, (the ladybird beetle mimic).

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  • Ken Walker 14 January 2015
    Tagged With tarsi
    Ken Walker says

    Great comments Martin. Linda, another clue as to why this is a Chrysomelidae rather than Coccinellidae is the shape of the second last tarsal segment on each leg - called the "penultimate" segment. If it is broad and flanged (as in your image), then you have a Chrysomelidae. Easy hey?? (:->!

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  • Linda Rogan 13 January 2015
    Tagged With trickyindeed
    Linda Rogan says

    Thanks for this interesting information Martin. Now I'm off to compare coccinellidae antennae.

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