<div class="text-justify">Surely you've seen fluttering butterflies in a flowered garden and perched briefly on the flowers. We know that these delicate and colorful winged creatures feed on the nectar they find in flowers and other liquid foods.</div>

<center>![Mariposa.jpg](https://cdn.steemitimages.com/DQmZqF5EDDMz5gRdjqpi1pu3xnxjzYJzsz7am5f5Sr1LEq5/Mariposa.jpg)</center>
<center><em><sup>Picture taken by @ufv - ZTE cell phone camera</sup></em></center>

<div class="text-justify">If we look closely at this precise moment, we will see that butterflies have a kind of elongated tube with which they extract their food. These go perching from flower to flower and absorbing in each its nectar.</div><p>

<div class="text-justify">Sitting on the lawn of my garden and waiting patiently, I managed to record the usual behavior of a butterfly when feeding. I invite you to see it, dear reader!</div>

https://youtu.be/9d7ycZuodrY
<center><em><sup>Video made by @ufv with a ZTE cell phone and edited in the Video Editor application for Android</sup></em></center>

<div class="text-justify">As I mentioned, these insects extend their buccal apparatus and introduce it to the flower in search of nectar. Today I will talk about this part of the butterflies, known as <a href=https://en.wikipedia.org/wiki/Proboscis>Proboscis</a>.</div>

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<h2>A tube that absorbs liquids</h2>

<div class="text-justify">That's right reader friend, located on the head of the butterfly it's found an extensible, flexible and very sensitive buccal structure formed by two hollow tubes together called maxillas, which are responsible for carrying the nectar of flowers or any liquid substance that serves as food into to the esophagus. Its scientific name is Proboscis and when the butterfly finishes feeding it retracts and it coiling under the head of the insect.</div>

<center>![](https://cdn.steemitimages.com/DQmf5KS738TKYdgwt3mjcxZtCjJ1SCxugbdZ6mJLjxNE5sT/image.png)</center>
<center><em><sup>Butterfly proboscis and Section through probosci
(Figure elaborated by @ufv using Microsoft PowerPoint)</sup></em></center>

<div class="text-justify">The butterfly can introduce its proboscis into flowers to absorb (suck) its nectar, but also has the ability to tilt it allowing it to feed on different angles without having to move, as seen in the following image.</div>

<center>![](https://cdn.steemitimages.com/DQmYmxMYTfjvGBxTisKir1jV6ZStEE9jC8sRp1gLRM7AZ8q/image.png)</center>
<center><em><sup><a href=https://pixabay.com/es/mariposa-mamar-prob%C3%B3scide-volador-96067>Pixabay</a> - CC0 Creative Commons</sup></em></center>

<h2>Only liquid foods</h2>

<div class="text-justify">Besides the nectar of the flowers, the butterflies also feed on the sap of the trees, juice of ripe fruits, liquids of decomposing materials and excrements of animals and even of the humidity of the soil and the minerals dissolved in it.  In the following Youtube video you can appreciate his taste for fruit juice.</div>

https://youtu.be/03S73-3Tw_0

<h2>Not all species feed</h2>

<div class="text-justify">Most species do so, whether they are diurnal or nocturnal.  However, there are some nocturnal species that never do so, because they are kept with the energy reserves acquired during their caterpillar stage.</div><p>

<div class="text-justify">During the winter season, other species enter a state of lethargy to minimize energy consumption and make better use of them, limiting the absorption of food.</div><p>

<h2>Conclusion</h2>

<div class="text-justify">The Proboscis is an elongated and tubular organ located in the head of some animals (invertebrates) such as butterflies, whose function is to suck liquid for their feeding. Also, some worms too have it (Nemertea and Annelida) and insects Diptera (these could be topics for future publications).</div><p>

<div class="text-justify">In vertebrates, the proboscis is known as the trunk of the elephant, South American tapir, the mono proboscis, among others. In these cases, it is an extension of the nose and has the function of respiratory organ, pressure or suction.</div><p>

<div class="text-justify">At the end of this publication, dear reader, I hope you have learned something new about butterflies and their feeding. The next time you see these insects in your garden "jumping" from flower to flower, remember the way they feed, similar to when we used a straw to take a tasty juice.</div><p>

Have a happy day!

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<h2>References</h2>

* https://www.asturnatura.com/articulos/lepidopteros-mariposas/formas-vida-alimentacion.php
* https://es.wikipedia.org/wiki/Prob%C3%B3scide
* https://www.amentsoc.org/insects/fact-files/mouthparts.html
* http://www.mariposapedia.com/anatomia-mariposas/
* https://allyouneedisbiology.wordpress.com/tag/proboscide-mariposa/
* https://en.wikipedia.org/wiki/Proboscis