Leaf Miner Fly Babies Scribble All Over Your Salad | Deep Look

Dipublikasikan tanggal 6 Apr 2021
Ditonton 205 725

This fly’s larvae tunnel inside bitter-tasting greens like arugula and kale, leaving squiggly marks behind. The plants fight back with toxic chemicals. So before laying her eggs, the fly mom digs into a leaf and slurps its sap - a taste test to find the least toxic spot for her offspring.
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As they feed inside a leaf’s spongy layer, leaf miners etch intricate patterns that are visible to us on the leaf’s surface. The whitish tan or light gray markings can be neatly serpentine or converge and have a blotch-like appearance, depending on what insect made them. Many different flies, butterflies and moths lay eggs on the leaves of citrus, vegetables and ornamental plants that grow into leaf miner larvae.
One leaf miner that gardeners might find in their arugula is the larva of a fly called Scaptomyza. The fly is related to - and looks a lot like - the fruit fly you might find buzzing around your ripe bananas.
The chemicals called isothiocyanates that give leafy greens like arugula their bitter taste are precisely the plants’ defense mechanism against pests. Scaptomyza flies have evolved to tolerate low levels of these compounds. One way in which the flies deal with these toxic chemicals is by laying their eggs on the leaves with the lowest concentrations.
--- Can leaf miners kill plants?
Leaf miners rarely do enough damage to even come close to killing a plant, but they make individual leaves inedible. If given enough time, a leaf miner can be particularly damaging to vegetables that are harvested specifically for their leaves. But don’t worry if you mistakenly eat a larva - it won’t make you sick.
--- How do you treat leaf miners?
Most backyard gardeners only need to remove the damaged leaves by hand. Since leaf miners are tucked inside the leaf, insecticides aren’t very effective and can hurt beneficial pest predators like wasps, spiders and ladybugs.
Gardeners with a greenhouse or large numbers of plants can use parasitic wasps to control leaf miners.
---+ Read the entire article on KQED Science:
---+ More great Deep Look episodes:
Born Pregnant: Aphids Invade with an Onslaught of Clones
Sharpshooter Insects’ Sexy Vibrations Spell Trouble in the Vineyard
---+ Shoutout!
🏆Congratulations🏆 to the following 5 fans on our Deep Look Community Tab for correctly answering that the fly is cutting the leaf with her ovipositor:
Wei Lun Fung
Kitten Alburn
Navid Valente
Heavenly Emperor
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#leafminers #deeplook

Deep Look
  • Deep Look

    Deep Look

    11 hari yang lalu

    Hi Deep Look fans! Want to learn more about how Scaptomyza fly moms choose a leaf to lay their eggs, or find out what makes the curlicues in your citrus leaves? Check out this article by Deep Look intern Marissa Sandoval: https://www.kqed.org/science/1973500/leaf-miner-fly-babies-scribble-all-over-your-salad Thanks for watching!

    • Vesta Ash

      Vesta Ash

      4 hari yang lalu

      Anything on how to get rid of them? They ruin all of my plants every year.

    • world Peace

      world Peace

      7 hari yang lalu


    • Merecca Claire Villariña

      Merecca Claire Villariña

      8 hari yang lalu


    • Merecca Claire Villariña

      Merecca Claire Villariña

      8 hari yang lalu

      I'm sick i know it's insect?!!!!!!

    • Pristine Wen Swen Chee

      Pristine Wen Swen Chee

      8 hari yang lalu


  • Vvmopz


    4 jam yang lalu

    Insects suck...lol

  • CanOMatic Guy

    CanOMatic Guy

    14 jam yang lalu

    Guess most ovipositors look like a you know what, nature is not one to waste a great design. Stick with what works.

  • Epytome Productionz

    Epytome Productionz

    Hari Yang lalu

    Oh this is good knowledge 👏 mystery solved. I've alwaysed wondered why some leaves looked like that

  • Seang Daroth

    Seang Daroth

    2 hari yang lalu

    Thanks for your usedful video! 💕💞 I love u, Deep Look Team 🙏
    From Cambodia

  • Franz Dingalan

    Franz Dingalan

    2 hari yang lalu

    "It's a larvae--"
    Me already for some reason: *Kill it.*

  • Light Yagami

    Light Yagami

    2 hari yang lalu

    *LEAF:* _"There's something inside me that pulls beneath the surface consuming, confusing."_ *It's like!* _"Discomfort, endlessly has pulled itself upon me."_ It's so distracting & I'm even reacting! What I'm saying is... IS!


  • C R

    C R

    2 hari yang lalu

    Why do insects have to make things weird lol

  • lala duh ༄

    lala duh ༄

    2 hari yang lalu

    Deep Look, can you do a video about the triglidae? it’s a type of fish that walks on the Sea Floor. I’m curious to know more about them.

  • Christopher Tadeo

    Christopher Tadeo

    2 hari yang lalu

    The narrators voice sounds like my bio professor from high school...

  • Jay OMFG

    Jay OMFG

    3 hari yang lalu

    Back to the mines❌
    Back to the leaves✅

  • Waqas Saddique Everything

    Waqas Saddique Everything

    3 hari yang lalu

    Which camera and lenses used to make this video ??

    • Gabriela Quiros

      Gabriela Quiros

      Hari Yang lalu

      Hi Waqas Saddique Everything! I produced this episode of Deep Look. Our series cinematographer, Josh Cassidy, films with a Panasonic GH5s camera outfitted with Canon 100mm and 65mm lenses. Josh recently answered viewers' questions about how he films Deep Look here: www.patreon.com/posts/q-deep-looks-47722639 The shots of the fly digging into the leaf and tasting the sap were filmed by University of California, Berkeley, doctoral candidate Julianne Peláez. Thanks for watching! -Gabriela

  • Karla Vega

    Karla Vega

    4 hari yang lalu

    Ovapositor is my new favorite word...I’ve been thinking about it almost daily since watching this video and others lol



    4 hari yang lalu

    Hi just love your content! can you also make a video of a pink underwing moth? curious to know more.....

  • Ann


    5 hari yang lalu

    I haven’t been able to identify them for so long - they’ve mostly just been on weeds but one or two have shown on up on plants I tend to.
    Did not expect to figure out what those were here. Thank you, though

  • Prism Sage

    Prism Sage

    5 hari yang lalu

    Not in front of my salad.

  • Jayy-B. van Vanite

    Jayy-B. van Vanite

    5 hari yang lalu

    This is so disgusting I love it

  • Johnlay Realm

    Johnlay Realm

    5 hari yang lalu

    Dang her voice is so relaxing that it made me fall asleep lol

  • Ok man

    Ok man

    5 hari yang lalu

    Every body gangsta until the larva start mining human skin

  • TTBT


    5 hari yang lalu

    I hate, no make it despise, these things!

  • MY MAP

    MY MAP

    5 hari yang lalu

    Awesome animals..

  • FilbieTron


    6 hari yang lalu

    2:10 this is nightmare fuel

  • Michelle Gong

    Michelle Gong

    6 hari yang lalu

    I’m a big health freak- But why did I watch this?

  • Robby Cahyadi

    Robby Cahyadi

    6 hari yang lalu

    A fly with crunching miss v

  • manja love

    manja love

    6 hari yang lalu

    I remember the movie "Teeth" after watching this.

  • Chara


    7 hari yang lalu

    Imagine one of those under your skin! Eww!

  • BJ Alex

    BJ Alex

    7 hari yang lalu


  • Azaria Decan

    Azaria Decan

    7 hari yang lalu

    Me is about to make a juicy sandwich
    Me:clicks dis vid. Also me:Noise at first

    Me after
    Me:Uhh I am not gonna make a juicy sandwich again....

    Me later:*makes sandwich anyways* me mmm yum!

    Me goes outside and sees dis white line on leaf:Look what's dis?
    Also me:*remembers* O H N O...

    Directed by Leaf miner fly....

    Illustration by leaf miner fly

    M E D E D
    B A I

  • J-TV


    7 hari yang lalu

    I hate insects more than anything in this world. Iam a known and active insect serial klr. That's not true. I only kill ants, poisonous insects flies and stinging insects. Just stuff that can hurt children and the elderly. I like butterfrees.

  • flat Mars society

    flat Mars society

    7 hari yang lalu

    God this little guy is so cool 😎

  • Different Saturner

    Different Saturner

    7 hari yang lalu

    Amazing invisible world.
    (Sat 10 Apr 2021 21h42)

  • 4004 intel

    4004 intel

    7 hari yang lalu

    the leaf dram

  • hamster cult

    hamster cult

    7 hari yang lalu

    Who is here from the shorts?

  • Dubbel Fruit

    Dubbel Fruit

    7 hari yang lalu

    Good thing I don't eat vegetables

  • Ŕęđ Ģêm

    Ŕęđ Ģêm

    7 hari yang lalu

    These lines always appear on our plants called "Pechay".
    *Jesus Christ, Does this mean I ate dead baby flies without even knowing?*



    7 hari yang lalu

    everybody gangsta until u realise everything we eat has bugs in it

  • Ronan Austin

    Ronan Austin

    7 hari yang lalu

    why am i watching this after i just had a salad 👁👄👁

  • OverOreo


    7 hari yang lalu

    Dang, I'm so uncomfortable due to my phobia but I can't stop watching ;-;

  • CXI.Animus


    7 hari yang lalu

    that flies cuchie got teeth lol

  • SimplyOrange537


    7 hari yang lalu

    I'm preparing for this garden seasons battle. harlequin bugs and leaf miners are my main enemies. You tell me what positive benefits they have going for them and I won't squish them.
    Home depot protip: give your neighbors the arugula and mustard greens to keep the pests away from your garden.

  • Adrian Fuentes

    Adrian Fuentes

    7 hari yang lalu

    Me tryin to eat salad

    Hol up wait a minute
    I said vegeterian salad no meat my guy

  • Ewan McKinlay

    Ewan McKinlay

    8 hari yang lalu

    You hear skeleton noises: panik
    It is spooktober: kalm
    It is spooktober!: doot

  • Kek Leone

    Kek Leone

    8 hari yang lalu

    2:03 oh no r34 artists incoming

  • Brad A

    Brad A

    8 hari yang lalu

    Public health officials are working on a vaccine (for the fly)

  • Merecca Claire Villariña

    Merecca Claire Villariña

    8 hari yang lalu


  • Raxanee and nala the kitty

    Raxanee and nala the kitty

    8 hari yang lalu

    Metal screetch

  • michelle


    8 hari yang lalu

    these are addicting

  • Ghivi Fahmi

    Ghivi Fahmi

    8 hari yang lalu

    "Jokes for you I'm into that"

  • A H

    A H

    8 hari yang lalu

    So basically salads are not for vegetarians?

  • Lyzks


    8 hari yang lalu

    I'm gonna need me one of those flies...

  • Sheikh Nazim Aziz

    Sheikh Nazim Aziz

    8 hari yang lalu

    Really dumbfounding...............

  • Antix taktix

    Antix taktix

    8 hari yang lalu

    That fly be rubbing its hands together like it hit the jackpot.

  • picachufan2000


    8 hari yang lalu

    Huh when I was younger I thought plants had those trails from snail slime now I know and it's more horrifying 😱

  • Amit das

    Amit das

    8 hari yang lalu

    Nice 👌

  • Derek Watt

    Derek Watt

    8 hari yang lalu

    Title about scribbling. Barely any pictures of the art they make. Horrible

  • xMoonx


    8 hari yang lalu

    Oh my gosh! I saw the first part of this video, and I was like- “EWWWW” Love your content btw! It’s very interesting! :)

  • Mazequax


    8 hari yang lalu

    I love her voice!

  • Elise Gaffga

    Elise Gaffga

    8 hari yang lalu

    Thank you for providing such insightful videos and all the information you add to your description!!

  • Elise Gaffga

    Elise Gaffga

    8 hari yang lalu


  • Chris Gonzalez

    Chris Gonzalez

    8 hari yang lalu

    Nutritious salad

  • ItsQueen Babii

    ItsQueen Babii

    8 hari yang lalu

    Great. Now I'm never going to look at salad the same. 😭

  • Laser Kahn

    Laser Kahn

    8 hari yang lalu

    Interesting I'm Jewish we always check our lettuce with magnifying glass next to a light bulb to get rid of any bugs.... I always wondered why ain't no one else did it , not only for religious reasons but who really wants to be eating larvae,...

  • Extra Dip

    Extra Dip

    8 hari yang lalu

    The way she spread her ovipositor did something to me.

  • Pristine Wen Swen Chee

    Pristine Wen Swen Chee

    8 hari yang lalu


  • Slorp


    8 hari yang lalu


  • m0rthaus


    8 hari yang lalu

    Whelp.. that ovipositor will be in my nightmares.

  • uabir


    8 hari yang lalu

    The photographer should get a raise

  • Toastymuffintop


    8 hari yang lalu

    Is that what those markings were?? I was also so puzzled why my plants were all tatted up sometimes.

  • Riana Marcelino

    Riana Marcelino

    8 hari yang lalu

    i thought i was open minded enough to appreciate all parts of nature.. idk bout that atm 😅

  • sahangbaknei Guite

    sahangbaknei Guite

    8 hari yang lalu

    all the vegans.. “Future Human Flies”

  • J Mid

    J Mid

    8 hari yang lalu


  • FluorescentLightBeauty


    8 hari yang lalu

    And vegans think that only animal matter is infested. Not to mention plants have a layer of skin called the epidermis too.

  • Mic Liebhart

    Mic Liebhart

    8 hari yang lalu

    So vegan said being vegan save animal. This video just proves'em wrong. Life have to be balance. Not being vegan or non vegan, just dont be greedy and eat what we need.

  • Karpeno


    9 hari yang lalu

    I Will eat this no more. Just meat.

  • RoseKindred


    9 hari yang lalu

    Hey, it's free protein.

  • RanMind YT

    RanMind YT

    9 hari yang lalu

    I don’t really care, it’s just extra protein 😄

  • Eggscapius Robloxius Ludus

    Eggscapius Robloxius Ludus

    9 hari yang lalu

    Fly larva be like:
    *Mining away*

  • Fancy Phant

    Fancy Phant

    9 hari yang lalu

    500’th comment Ik nobody cares but keep up the good work, deep look.

  • Yusuf Senna

    Yusuf Senna

    9 hari yang lalu

    This is why I hate salad

  • AnimeShinigami13


    9 hari yang lalu

    I'm a gardener, and I keep getting these guys in my arugula and swiss chard. :( i always wondered how they go about their business.

  • 001 0

    001 0

    9 hari yang lalu

    Vegans cant eat grass now

  • sickening_love


    9 hari yang lalu

    I was just eating salad.. what have I done to myself..

  • qeueu qeu

    qeueu qeu

    9 hari yang lalu

    I've gained a new appreciation for Deep Look after spending so much time in the garden during the quarantine.

  • COAC


    9 hari yang lalu

    Idk why this makes me want to start itching.

  • 4Haan


    9 hari yang lalu

    Tell that do the vegans not us

  • Eros 530

    Eros 530

    9 hari yang lalu

    Leaf miners are so annoying

  • Nutter Udder Man

    Nutter Udder Man

    9 hari yang lalu

    Okay, so I was scrolling through youtube when I got this in my recommendations tab, but the rest of the title got cut off, and there was just periods, so what the title looked like was: "leaf miner fly babies scribble all over you" and I had a reason to believe that it said that, because this channel always puts "| Deep look" at the end of every video.

  • Wolframium Tungsten

    Wolframium Tungsten

    9 hari yang lalu

    I mounted two Liriomyza trifolii adults on entomological pins for my tropical insect pests class, it wasn't easy.

  • Richard Rahl

    Richard Rahl

    9 hari yang lalu

    Master of muscle control.

  • Bob Charlie

    Bob Charlie

    9 hari yang lalu

    Mmmmmm......those are my favorite greens too. These little guys have good taste.

  • Murilo Cardoso de Oliveira

    Murilo Cardoso de Oliveira

    9 hari yang lalu

    Soooo interesting! Thank you Deep Look for expanding our world

  • A129


    9 hari yang lalu

    for some reason I'd always assumed these patterns on plants were from snails

  • starjsr


    9 hari yang lalu

    That's why Jews who keep Kosher must by Kosher law inspect their leafy veggies from bugs before eating them! how is that for a vegan diet?

  • Harshith Traders

    Harshith Traders

    9 hari yang lalu

    I cannot even imagine the Hardwork invested into making just 3 Seconds of the Video 😳
    Awesome Team DeepLook 🙏
    Your Editor, Cameraman and Narrator needs an Immediate Kiss on theit cheeks 🥰😍💕

  • Young Stunna

    Young Stunna

    9 hari yang lalu

    So it’s plants version of bot fly

  • dd


    9 hari yang lalu

    This is a perfect example of 'cursed by knowledge'.

    • Deep Look

      Deep Look

      9 hari yang lalu

      That is pretty much our show.

  • Esa K.

    Esa K.

    9 hari yang lalu


  • Carmel Capricorn

    Carmel Capricorn

    9 hari yang lalu

    Turning over a new 🌿. 🥬☘️🐛

  • Super Anime Fan

    Super Anime Fan

    9 hari yang lalu

    Oh no wonder why when i have this science experiment of full grown plants and sometimes 2 of the leaves have this Scribble
    Ahhhhhhh wow i learned something today



    9 hari yang lalu

    Great content by @ Deep look ...Why this channel is underrated ?