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510 Views 6 Replies Last post: Oct 28, 2013 6:50 PM by MikeHardman RSS
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Oct 28, 2013 2:27 PM

Insects found at work, help with ID

Hi all,

 

For a while we've all been complaining about being itchy at work, and have been told repeatedly that there is nothing untoward happening in our office (apart from the usual rubbish)

The other day, my colleague left a half finished bowl of porrage on her desk, and 30 minutes later, there were 20-30 of the attached insects on it (I've attached the picture of insect, not the actual insect)

Facilities tell us this is a normal 'food fly'.  However, some of my colleagues reckon they're getting bitten?

 

Can anyone help us Id this?  (sorry about the quality of the pic, they're tiny things.20131028_140602-1.jpg

  • Currently Being Moderated
    Oct 28, 2013 3:52 PM (in response to Mozza)
    Re: Insects found at work, help with ID

    It is not a fly of any sort.

    I suspect it is a beetle, but really can't be sure from your photo.

    They are not flour beetles or powder post beetles; not several domestic beetles that immediately come to mind.

     

    Any chance of a better close-up?

    You say they are tiny; please make an estimate of their size in mm (length excluding antennae).

     

    Mike

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      • Currently Being Moderated
        Oct 28, 2013 4:30 PM (in response to Mozza)
        Re: Insects found at work, help with ID

        Shame - in that case, we might be limited to guesses.

         

        There are several grain beetles, but we'd expect to see a narrow point in their body; whereas yours don't show that. In that respect yours are more like click beetles, but I don't know of such small ones.

         

        They are obviously coming from somewhere other than the porridge itself, and probably not the packet either.

        If they are interested in the porridge, they may interested in other sources of starch - such as wallpaper, flour, cereal packets, bread.

         

        Mysterious itching is more likely to be fleas or mites, I would guess.

         

        Mike

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    Oct 28, 2013 4:21 PM (in response to Mozza)
    Re: Insects found at work, help with ID

    Springtails = Collembola, which are detritovores usually found in decaying organic matter at the soil surface. Cannot imagine how they got in the porridge ... could there perhaps be a plant in a pot on the desk?

     

    They are not a biting insect so will not be responsible for colleagues bites.

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        Oct 28, 2013 6:50 PM (in response to Mozza)
        Re: Insects found at work, help with ID

        Bombus',

        Good call.

         

        Mozza,

        You can run the problem by your local environmental health office.

        Initially, you can take a specimen to them. They should be able to ID it and advise what to do about it. Depending on what you tell them, they may suggest they visit your office.

         

        Mike

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