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Caterpillar #3 (O. postica)


Caterpillar #3 (O. postica)
Photo Information
Copyright: jitti coowanitwong (jcoowanitwong) Gold Star Critiquer/Gold Note Writer [C: 1679 W: 0 N: 3120] (13754)
Genre: Animals
Medium: Color
Date Taken: 2007-04-06
Categories: Insects
Camera: canon s3 is
Exposure: f/8, 1/80 seconds
Photo Version: Original Version, Workshop
Theme(s): Caterpillars from Thailand [view contributor(s)]
Date Submitted: 2007-04-08 9:04
Viewed: 4931
Points: 36
[Note Guidelines] Photographer's Note
Caterpillar (Stalk-eating caterpillar)of Tussock Moth.

Phylum: Arthropoda - Arthropods
Superclass: Hexapoda - Hexapods
Class: Insecta - Insects
Subclass: Pterygota - Winged Insects
Order: Lepidoptera - Butterflies and Moths
No Taxon Moths
Superfamily: Noctuoidea
Family: Lymantriidae - Tussock Moths
Tribe: Orgyiini
Genus: Orgyia
Species: Orgyia postica
Thai common name: หนอนบุ้งปกเหลือง

A caterpillar is the larval form of a lepidopteran (a member of the insect order comprised of butterflies and moths).

Most caterpillars have long, tubular, portioned 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.

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.

Caterpillars have 4,000 muscles (the human being has only 629!). They move through contraction of the muscles in the rear segments pushing the blood forward into the front segments elongating the torso. The average caterpillar has 248 muscles in the head segment alone.

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.

Caterpillars have rightly been called eating machines. They eat leaves voraciously, shed their skins generally four or five times, and eventually pupate into an adult form.

With tip from our good friend batu (Peter Roos). More information on this caterpillar can be added.

Lymantriidae or Liparidae is a family of moths

The larvae are hairy, often with hairs packed in tufts, and in many species the hairs break off very easily and are extremely irritating to the skin (especially members of the genus Euproctis; Schaefer, 1989). This highly effective defence serves the moth throughout its life cycle as the hairs are incorporated into the cocoon, from where they are collected and stored by the emerging adult female at the tip of the abdomen and used to camouflage and protect the eggs as they are laid. In others, the eggs are covered by a froth that soon hardens, or are camouflaged by material the female collects and sticks to them (Schaefer, 1989). In the larvae of some species, hairs are gathered in dense tufts along the back and this gives them the common name of tussocks or tussock moths.

From Wikipedia
http://bugguide.net/node/view/335/tree

I posted side view of this caterpillar in workshop.
Thanks for visiting.

extramundi, MommaMiaX3, jmp, jaycee, saeedabbasi, SkyF, Alex99, valy67 has marked this note useful
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Critiques [Translate]

Very nice capture, of this always dificult subjects. With so much spines everywhere is a pain to find a good and descriptive angle, but this time you got a perfect BG to make it stand out, and also very artistic :)
Nice capture, regards, Felipe.

  • Great 
  • batu Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1079 W: 293 N: 4497] (16383)
  • [2007-04-08 9:18]

Hello Jitti,
a very bizarre caterpillar, nicely presented here. I also like the leaf-structures. The caterpillar belongs to the family Lymantriidae. There are very similar species of the genus Orgyia in Europe.
Best wishes, Peter

Hello Jitti,

Another marvelous capture, of an interesting creature. Excellent sharpness and colours! The BG is so artsy in appearance, love how he is crawling over the seeming bridge of this leaf that has been dined upon. Fantastic work. Thank you so much for sharing! :)

Ange

  • Great 
  • jmp Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1659 W: 95 N: 2273] (8415)
  • [2007-04-08 10:35]

Hi Jitti,
This is really a beautiful caterpillar! Absolotely rare in its shape! Impressive to know about muscle number in a so small creature.
TFS, José M.

  • Great 
  • jaycee Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 2454 W: 10 N: 8044] (25460)
  • [2007-04-08 10:38]

Hi Jitti,

Not only is this caterpillar excellent in colors and details but this is a most artistic picture. The bg is just wonderful,

Jane

bonjour jitti
cette chenille est magnifique et la nettetéest parfaite sur toute sa longueur,jolies couleurs et le BG noir la met bien en evidance.felicitations.
laurent

  • Great 
  • ridvan Gold Star Critiquer/Gold Note Writer [C: 498 W: 0 N: 1136] (5205)
  • [2007-04-08 13:01]

selam jitti;nice macro!Great composition and cropping, sharpness and details f the insect and leaf, impressive lighting. Some noise is visible. The shot demands a some PP. But it is not a point. Perfect done and TFS.
regards
ridvan

  • Great 
  • clnaef Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 778 W: 67 N: 645] (6814)
  • [2007-04-08 14:08]

Bonjour,
Magnifique présentation. Chenille originale.
Bonne journée.
clnaef

Hello Jitti,
As for me this species is very similar to European caterpillar frim genus Orygia. It looks almost the some :)
Greetings,
Radomir

Hello Jitti,
What an interesting and so well done picture! This insect is superb and this capture beautiful! I like those details, colors, great environment and your so interesting notes about it. A great post! Thanks,
Claudine

Hi jitti ,
excellent details with beautiful colours.
sharpness is great too.
well captured
thanks and regards
Saeed

  • Great 
  • SkyF Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2234 W: 188 N: 1912] (8073)
  • [2007-04-09 8:02]

Hi Jitti,
quite a hairy one, it's colors and details are sharp and crisp. A very nice POV to see many of the interesting details.
Very well done.
Sky

  • Great 
  • horia Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2158 W: 224 N: 4749] (16656)
  • [2007-04-09 8:29]

Hi Jitti

A very interesting caterpillar you show us here!
The hairs on its body are fantastic - very big and colorful and nicely visible in both of your shots.
Good DOF and contrasting BG.

Bravo and TFS
Horia

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2007-04-09 9:51]

Hi Jitti.
Amazing picture by subject and quality of its reproduction. The leaf and insects look great. Wonderful shapes of the leaf, tremendous exactness of insect details, including colours. Sharpness is simply perfect as well as the diagonal composition. Almost black BG underlines the main subject excellently. Bravo and my best regards. Superb done.
Alexei.

  • Great 
  • arfer Gold Star Critiquer [C: 2731 W: 0 N: 0] (0)
  • [2007-04-09 22:02]

Hello Jitti

Great shot of this furry little beast.It must have been very hungry,it has eaten quite a bit of the leaf.Excellent colour saturation and very nice sharp details.TFS

Rob

Excellent clarity of this pretty animal. Nice framing there too.
Achim

Hi Jitty,
hey hey, what a crazy guy!
I like the colours and the long hairs, a lovely caterpillar, thanks for sharing
Sabine - wishnugaruda

Hello Jitti !
What a strange and beautiful caterpillar ! I love its shape, itsy hairs and its colors. You managed to capture some excellent details, and once again you made the best use of your flash. Excellent black BG. Very well done !
Valerie.

  •      
  • Maite Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 998 W: 65 N: 1270] (5199)
  • [2007-04-16 10:04]

Hello Jitti
Probably if I'd had seen this creature I would have run away, only for its strange appearance, for fear it could jump upon me (yes, I know, catterpillars do not jump, but...) In any case I wouldn't have made a good photograph, sure ;)
Excellent capture, dear friend. Amazing shaggy punky catterpilar.
Very good job.
My compliments and TFS.
Best wishes
Maite

PT :)

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