Announcement

Collapse
No announcement yet.

The Strange Cocoons of Fungus Gnats

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • The Strange Cocoons of Fungus Gnats

    I am posting this here because of the potential wide interest in the subject and in the Laowa lens.

    Sometimes were are so focused on small things that we fails to see the larger ones. These images nearly didn’t happen because of such a circumstance.

    I was searching through some long-dead, well-rotted tree remnants in a shaded and permanently damp spot in our garden. I pulled out a chunk about 2 inches/50 mm thick and about 18 inches/45cm long. It had some tiny orange club fungi on it so I took them to our “pub bench” table and collected my camera.

    As I supported and orientated the wood, I saw some ark swellings on one end. Oncloser examination, I saw that they were much like a moth pupa but with an inverted operculum (my choice of term) at one end, rather like the lid of a Pringles tube. This feature stopped it from, otherwise, being a moth cocoon. I later measured them at about 7mm long.

    I took the photos then did a lot of internet searching for matching images. Eventually, I sent some images to two knowledgeable people. Although I do not yet have a definitive answer, I seems that these are cocoons of mycetophilids, Fungus Gnats. Thanks to Jon Cole and Malcolm Storey for input. Malcom suggested they were mycetophilids and a search shows images in BugGuide, for Epicypta which look identical.

    An online resource devoted to North American insects, spiders and their kin, offering identification, images, and information.


    I will add more details in this topic if I get them. It seems that these may have sometimes been overlooked in habitat.

    For the low magnification shots I used:

    Olympus EM-1 (aperture priority), Olympus 4/3 x2 TC, Olympus 4/3 50mm f2 macro, f10, hand-held. (No TC and f11 for the first one).

    For the higher magnifications:

    Olympus EM-1 (aperture priority mode), Laowa 25mm f2.8 2.5x-5x ultra-macro at x2.5 and f8, hand-held.

    Harold













    Crosseye stereos:









    The body is willing but the mind is weak.

  • #2
    https://www.flickr.com/photos/133688957@N08/
    Mark Johnson Retired.

    Comment


    • #3
      Re: The Strange Cocoons of Fungus Gnats

      Thanks. We have a lot of long-term tolerance of dead wood on the ground in some areas of our back garden. We also have a stack of willow and apple logs/chunks felled several years ago and a stack of Sycamore logs four years old in the front garden. Those are a fairly reliable macro resource.

      We are about a third of the way through fungus forays for this year and mushrooms are not always the only finds. Next one Sunday.

      Serendipity is a great tool for finding subjects.

      Harold
      The body is willing but the mind is weak.

      Comment


      • #4
        Re: The Strange Cocoons of Fungus Gnats

        Kudos Harold for a superbly shot project with excellent commentary. Your interesting post deserves lots of support for the time and effort invested. Most impressive macros, btw.

        Comment


        • #5
          Re: The Strange Cocoons of Fungus Gnats

          Originally posted by pandora View Post
          Kudos Harold for a superbly shot project with excellent commentary. Your interesting post deserves lots of support for the time and effort invested. Most impressive macros, btw.
          Thanks, Mark.

          At least these kept still, until I tried to cut them away with a piece of supporting outer bark. Each seemed held on more by faith than anything and fell off at the least touch.

          I have retained them all in a container and hope to hatch out at least one for identification purposes.

          Harold
          The body is willing but the mind is weak.

          Comment


          • #6
            Re: The Strange Cocoons of Fungus Gnats

            That is really interesting Harold and well shot

            Sent from my SM-G930F using Tapatalk
            OMD E-M1ii MMF3 8-25 f4 Pro 40-150 f2.8 pro MC-14 12-40 pro 14-42 EZ 9-18 f4.0 -5.6 40 -150f4-f5.6 R Laowa 50mm f2.8 macro Sigma 105 f2.8 macro Holga 60mm plastic Holga pinhole lens lens and an OM2sp

            I nice view does not mean a good photograph. My FLickr

            Comment


            • #7
              Re: The Strange Cocoons of Fungus Gnats

              Originally posted by alfbranch View Post
              That is really interesting Harold and well shot

              Sent from my SM-G930F using Tapatalk
              Thanks, Alf.

              That rotten wood is one of my main fungus and slime mould "banks" in the garden and I now wonder how many times I have overlooked them. The empty ones tend to become a bit collapsed and can look like a grey bird dropping.

              Harold
              The body is willing but the mind is weak.

              Comment

              Working...
              X