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  • Dolichopodidae indet.

    Images:

    oilshale

    By oilshale

    Taxonomy

    Long-legged Fly

    Kingdom: Animalia
    Phylum: Arthropoda Latreille 1829
    Class: Insecta Linnaeus 1758
    Order: Diptera Linnaeus 1758
    Family: Dolichopodidae Latreille 1809
    Genus: indet.
    Species: indet.

    Geological Time Scale

    Eon: Phanerozoic
    Era: Cenozoic
    Period: Paleogene
    Sub Period: None
    Epoch: Eocene

    Stratigraphy

    Prussian Formation

    Provenance

    Acquired by: Purchase/Trade

    Dimensions

    Length: 2.2 mm

    Location

    Primorskoje (Open Pit Mine)
    Yantarny (Village)
    Kaliningrad Oblast (Region)
    Russia

    Comments

    Taxonomy according to fossilworks.org.

    Diagnosis according to Sawabi et al., 2018 p. 7: “Small to medium slender flies; body length 1–9 mm; most species with greenish to blue metallic luster, while others dull yellow, brown or black in color. Eyes large and prominent. Antennae aristate. Ocellar bristles and outer vertical bristles well developed in most species. Legs long and slender. Wings clear or patterned with darker areas towards the wing margin; wing venation reduced; three radial veins R1, R2 + 3, R4 + 5 present; posterior basal cell and discoidal cell always fused; anal cell always small. Abdomen elongate-conical or flat; male genitalia often free and bear on a petiole; tergite 8 being asymmetrical.”

    Identified by oilshale using Sawaby et al. 2018.

    Reference:
    Sawaby, R. F., El Hamouly, H., and Abo-El Ela, R. H. (2018): Diagnosis and keys of the main dipterous families and species collected from rabbit and guinea pig carcasses in Cairo, Egypt. The Journal of Basic and Applied Zoology 79:10. DOI 10.1186/s41936-018-0018-6

    Go to fossils Insects

    User Feedback


    cngodles

    Excellent photos here.

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    oilshale

    oilshale

    Posted (edited)

    18 hours ago, cngodles said:

    Excellent photos here.

    Thanks, but this is one of my first attempts - I still have a lot to learn.

    To get images with a large depth of field, you have to take 50 or more images (depending on the object). For each image, the distance to the object has to be reduced by a few microns (either manually or with a motorized focus stacking rail).  The images are then stacked on top of each other using a program such as Helicon focus or Adobe Photoshop and merged together to form one image.

    Time consuming, but a lot of fun.

    Edited by oilshale

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    cngodles

    cngodles

    Posted (edited)

    Yeah, right now I do this on a much smaller scale. I stack photos through a microscope lens using my phone (I have an app that allows manual focus with focus highlighting), but typically only shoot 5-15. I brings these from my phone into the computer. Luckily Photoshop aligns the images as well.

     

    As for being your first attempt, I'd say you pretty much nailed it and surpassed what I've accomplished. :yay-smiley-1:

    Edited by cngodles

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