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Caterpillar


Caterpillar
Photo Information
Copyright: Mahesh Patel (ohmshivam) Silver Star Critiquer/Silver Workshop Editor/Silver Note Writer [C: 26 W: 25 N: 33] (104)
Genre: Animals
Medium: Color
Date Taken: 2011-01-27
Categories: Insects
Camera: Canon eos 1000 D, EF-S18-55mm, UV (Haze) 58 mm
Exposure: f/5.6, 1/60 seconds
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2011-01-29 19:04
Viewed: 3815
Points: 8
[Note Guidelines] Photographer's Note
May I request TN experts to let me know what type of insect is this?
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After knowing what it is I am trying to update my note.
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Caterpillars are the larval form of a member of the order Lepidoptera (the insect order comprising butterflies and moths). They are mostly herbivorous in food habit, with some species being insectivorous. Caterpillars are voracious feeders and many of them are considered pests in agriculture. Many moth species are better known in their caterpillar stages because of the damage they cause to fruits and other agricultural produce.

The etymological origins of the word are from the early 16th century, from Middle English catirpel, catirpeller, probably an alteration of Old North French catepelose: cate, cat (from Latin cattus) + pelose, hairy (from Latin pilōsus)

Most caterpillars have tubular, segmented bodies. They have three pairs of true legs on the three thoracic segments, up to four pairs of prolegs on the middle segments of the abdomen, and often a single pair of prolegs on the last abdominal segment. There are ten abdominal segments. The families of lepidoptera differ in the numbers and positioning of the prolegs. Some caterpillars are fuzzy (which means they have hair) and they are most likely to cause itching of the hands if touched.

Caterpillars grow through a series of moults; each intermediate stage is called an instar. The last moult takes them into the inactive pupal or chrysalis stage.

Like all insects, caterpillars breathe through a series of small openings along the sides of their thorax and abdomen called spiracles. These branch into the body cavity into a network of tracheae. A few caterpillars of the family Pyralidae are aquatic and have gills that let them breathe underwater.

Caterpillars have about 4,000 muscles (compare humans, with 629). The average caterpillar has 248 muscles in the head segment alone.

Caterpillars move by sliding their internal organs forward using contraction of the muscles; the torso first elongates and then contracts like a slinky. They are one of the only known organisms that use this method of locomotion. Another way of describing this process is: gut-first, body-later.

Senses
Caterpillars do not have good vision. They have a series of six tiny eyelets or 'stemmata' on each side of the lower portion of their head. These can probably form well focused, but poorly resolved images.They move their heads from side to side probably as a means of judging distance of objects, particularly plants. They rely on their short antennae to help them locate food.

Some caterpillars are able to detect vibrations, usually at a specific frequency. Caterpillars of the common hook-tip moth, Drepana arcuata (Drepanoidea) produce sounds to defend their silk nests from members of their own species,by scraping against the leaf in a ritualized acoustic duel. They detect the vibrations conducted by the plant and not airborne sounds. Similarly, cherry leaf rollers Caloptilia serotinella defend their rolls. Tent caterpillars can also detect vibrations at the frequency of wing beats of one of their natural enemies.

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Critiques [Translate]

Hi Mr. Mahesh.

Good picture of this caterpillar.
Next time try to remove the obstuctions without disturbing the insect, it gives you a better picture. Welldone & TFS.

Kapil

Welcome to TN, Mahesh!
Kapil has identified the subject for you. It is a nice looking Caterpillar.
Well done and TFS.
Ram

Interesting caterpillar, nicely photographed. regards Yiannis

Hello Mahesh Bhai,
Very well shot macro photograph of this caterpillar. Unable to identify; I am quite poor in them.
Regards Dr Ranjan

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