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Erannis defoliaria - Female Strange place: On a wall 30m from the nearest tree to put her eggs on ... long way for a flightless crawler<br />
Close-up of head with large nocturnal eyes here:<br />
<figure class="photo"><a href="https://www.jungledragon.com/image/86697/erannis_defoliari_-_female_portrait.html" title="Erannis defoliari - Female portrait"><img src="https://s3.amazonaws.com/media.jungledragon.com/images/3043/86697_thumb.jpg?AWSAccessKeyId=05GMT0V3GWVNE7GGM1R2&Expires=1596672010&Signature=cxtQaAfCXTmsnYvdY9yyXZMl9cQ%3D" width="200" height="114" alt="Erannis defoliari - Female portrait The rather large eyes are hardly visible from above ...<br />
Complete lady here:<br />
https://www.jungledragon.com/image/86696/erannis_defoliari_-_female.html Alerdinck,Bistonini,Ennominae,Erannis,Erannis defoliaria,Geometridae,Geometroidea,Geotagged,Lepidoptera,Mottled Umber,Netherlands,nl: Grote wintervlinder" /></a></figure> Alerdinck,Bistonini,Ennominae,Erannis,Erannis defoliaria,Geometridae,Geometroidea,Geotagged,Lepidoptera,Mottled Umber,Netherlands,nl: Grote wintervlinder Click/tap to enlarge Promoted

Erannis defoliaria - Female

Strange place: On a wall 30m from the nearest tree to put her eggs on ... long way for a flightless crawler
Close-up of head with large nocturnal eyes here:

Erannis defoliari - Female portrait The rather large eyes are hardly visible from above ...<br />
Complete lady here:<br />
https://www.jungledragon.com/image/86696/erannis_defoliari_-_female.html Alerdinck,Bistonini,Ennominae,Erannis,Erannis defoliaria,Geometridae,Geometroidea,Geotagged,Lepidoptera,Mottled Umber,Netherlands,nl: Grote wintervlinder

    comments (13)

  1. Beautiful but I'm confused, what do you mean with flightless? Is this an intermediary stage between caterpillar and adult? Posted 7 months ago
    1. The females of both our "Grote & Kleine Wintervlinders" ( 19Erannis defoliaria & 11Operophtera brumata ) have reduced wings or no wings at all and hence cannot fly, so it's the males that fly around trying to locate the females to mate with them.
      Normally the female will be climbing around on the stem of a suitable host tree to deposit her eggs.
      This female was way off track, sitting on a wall some 30m from the nearest tree, so even if the males will come to her and mate with her, where is she going to leave her eggs so that the young caterpillars will find food? Not going to happen, as she can't fly to the nearest tree - she would have to get down from the wall and struggle around over 30m of rubbish/grass/dirt track to get to a tree ...
      Posted 7 months ago
      1. Can't say I've ever seen such a thing. Perhaps she mistakenly saw the wall as a tree. Are you going to intervene? Posted 7 months ago
        1. She was still sitting in the same spot (more or less) two days later, so I decided to move her to a tree ... I know, I know .. leave nature be and all that ... but hey ... she had made my day, so I figured I might give it a shot and provide her with a better day too ;o) Posted 7 months ago, modified 7 months ago
          1. I personally think intelligent intervention is fine. Wildlife including insects are struggling, nothing wrong with helping them. Posted 7 months ago
            1. Very sweet, Arp! I agree and am glad I'm not the only one! Although, I sometimes leave them to their fate. Posted 7 months ago
              1. ahw ... thanks "guys" ;o) Posted 7 months ago
  2. Very weird! But, it makes for a lovely photo! Posted 7 months ago
    1. The black and white on a black wall has some "artistic" value in its own right ;o)
      Zeuzera pyrina https://www.jungledragon.com/image/82722/zeuzera_pyrina_-_close-up.html Alerdinck,Geotagged,Leopard Moth,Moth,Netherlands,Zeuzera,Zeuzera pyrina,moth week 2019,nl: Gestippelde houtvlinder

      Yponomeuta plumbella - On black wall  Alerdinck,Black-tipped Ermine,Geotagged,Large-spot Ermine Moth,Lepidoptera,Moth,Netherlands,Yponomeuta,Yponomeuta plumbella,Yponomeutidae,moth week 2019,nl: Grootvlekstippelmot

      :o)
      Posted 7 months ago
      1. Ha, definitely! Such a nice background. It must be why she chose to pose there for you...she was seeking attention and fame. Posted 7 months ago
  3. From today's Facebook post:

    Female mottled umber (Erannis defoliaria) moths are apterous―they are completely wingless! This is a rare phenomenon that occurs in less than 1% of moth species. In species that exhibit this trait, it’s usually only the females that are wingless. Males of the same species are winged because their reproductive success depends on their mobility. They need to go off and find females to mate with. Thus, far fewer species also have flightless males.

    It may seem disadvantageous for a female moth to be wingless, but the reality is quite the opposite. In fact, many flightless females are still highly mobile thanks to their well-developed legs. They can walk, climb, and jump with ease. So, they are still able to disperse as desired. In contrast, other species with flightless females don’t venture far from their pupal cocoons, even if their legs are strong and agile. It’s assumed that they don’t disperse because there is simply no reason to. There is no advantage to leaving an already favorable spot in the hope of finding something better. Furthermore, being flightless benefits a female’s reproductive success. If a female can’t fly, she can save her energy and nutrients that would otherwise be used to build flight muscles. Those resources can instead be used to produce more and/or larger eggs, which provide a substantial benefit to the developing embryos. {Spotted in the Netherlands by JungleDragon moderator, Pudding4brains} #JungleDragon #moth #apterousmoth #flightlessmoth #Erannisdefoliaria
    Posted 7 months ago
    1. Aaahhhw, thanks Christine :o) Posted 7 months ago
      1. You're welcome, Arp :). Posted 7 months ago

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The Mottled Umber is a moth of the family Geometridae. It is a common species throughout much of the Palearctic region.

Similar species: Moths And Butterflies
Species identified by Pudding4brains
View Pudding4brains's profile

By Pudding4brains

Public Domain
Uploaded Nov 19, 2019. Captured in Den Alerdinckweg 4A, 8055 PE Laag Zuthem, Netherlands.