Skip navigation
3108 Views 6 Replies Last post: Jan 5, 2014 8:05 PM by tankgreen RSS
Currently Being Moderated

Jan 4, 2014 6:37 PM

Identification help

I have a lot of maggots in the skirting boards and stairs of my communal hallway in Devon. This has been going on for several weeks (councils are very slow to act), and now I have just discovered a caterpillar. Is the catepillar a grown up version of the maggots? Is it feeding off the maggots? What will the maggots become if not the caterpillar? And what will the caterpillar become?











  • Currently Being Moderated
    Jan 5, 2014 9:48 AM (in response to tankgreen)
    Re: Identification help

    I think the caterpillar is a yellow underwing. They often live underground feeding on plant roots but I don't know how it found its way into your house - maybe it's looked for somewhere to pupate.


    The larvae look like bibionids (Bibio or Dilophus species). They often occur together in large numbers, in soil, but again I don't know why they'd be in your hallway

    • Report Abuse
      • Currently Being Moderated
        Jan 5, 2014 3:01 PM (in response to tankgreen)
        Re: Identification help

        I don't think either the larvae or the caterpillar are causing any damage, I think they're just a symptom of the structural problems you describe. However, their presence indicates that those problems are pretty bad. I don't claim to be an expert but I think bibionid larvae normally feed on decaying vegetation (although they will occasionally turn their attention to healthy roots) and I wonder if mould in / around the house is drawing them in. Is there dry rot?

        • Report Abuse
          • Currently Being Moderated
            Jan 5, 2014 6:28 PM (in response to tankgreen)
            Re: Identification help

            Well, in your latest photo the end piece of skirtinmg board seems to be in a pretty bad state, which could well be some sort of rot. I wonder if the fungus causing the rot could be attracting the larvae, but that's just a suggestion. If there is wet rot or dry rot that might be a more urgent issue than the larvae.


            I'm not entirely sure how the larvae are getting in to your hallway so it's difficult to say whether they might appear in your room. If they're just coming up from the ground below it would seem feasible. In my house ants seem able to appear both sides of the external walls but occasionally further in the house too.

            • Report Abuse

More Like This

  • Retrieving data ...

Bookmarked by (0)

What the symbols mean

  • "correct" answer available
  • "helpful" answer