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Caterpillar#2 (Geometridae)

Caterpillar#2 (Geometridae)
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: 2007-02-01
Categories: Insects
Camera: canon s3 is
Exposure: 1/100 seconds
Photo Version: Original Version
Theme(s): Caterpillars from Thailand [view contributor(s)]
Date Submitted: 2007-04-03 9:58
Viewed: 3911
Points: 16
[Note Guidelines] Photographer's Note
Kingdom: Animalia
Phylum: Arthropoda
Superclass: Hexapoda
Class: Insecta
Subclass Pterygota (Winged Insects)
Order: Lepidoptera(Butterflies and Moths)
Suborder: Ditrysia
Superfamily: Geometroidea
Family: Geometridae

The geometer moths or Geometridae are a family of the order Lepidoptera. A very large family with around 26,000 species of moths described.

The name Geometer (earth-measurer) refers to the means of locomotion of the larvae or caterpillars, which lack most of the prolegs of other Lepidopteran caterpillars. Equipped with two pairs of prolegs at hind end, a caterpillar will clasp with its front (thoracic) legs and draw up the hind end, then clasp with the hind end (prolegs) and reach out for a new front attachment.
The impression that it is measuring its journey is inescapable. The caterpillars are accordingly called loopers, spanworms, or inchworms. They tend to be green, grey, or brownish and hide from predators by fading into the background or resembling twigs. Some have humps or filaments. They are seldom hairy or gregarious. Typically they eat leaves. However, some eat lichen, flowers, pollen, or are even carnivorous.

Many Geometrids have slender abdomens and broad wings which are usually held flat with the hindwings visible. As such they appear rather butterfly-like but in most respects they are typical moths: the majority fly at night, they possess a frenulum to link the wings and the antennae of the males are often feathered. They tend to blend in to the background, often with intricate, wavy patterns on their wings. In some species, females have reduced wings (e.g. winter moth and fall cankerworm).
Most are of moderate size, about 3 cm across but a range of sizes occur. They have distinctive paired tympanal organs at the base of the abdomen (lacking in flightless females).

From Wikipedia

Alex99, jeanpaul, ramthakur, scottevers7, pablominto has marked this note useful
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ThreadThread Starter Messages Updated
To Alex99: the substratumjcoowanitwong 1 04-03 11:04
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Critiques [Translate]

hi jitti,
nice capture, well composed shot, nice colour tones, well composed, sharp image, the pose of the secont caterpilar looks great,
tfs & regards

  • Great 
  • Alex99 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 4072 W: 133 N: 7096] (23735)
  • [2007-04-03 10:41]
  • [+]

Hi Jitti.
Shot-riddle. What is the substratum? Insects are reproduction perfectly: great details and sharpness, nice colours, excellent combination with grey BG and dark substratum. I think your shot is rather creative. Well done and TFS.

bonjour jitti
j'aime la pose de la chenille qui semble chercher un autre point d'accroche pour pouvoir continuer son chemin.
la netteté est bonne.
tres sympa.

Bonjour Jitti
Qu'elle belle capture de ces deux chenilles qui feront un sans doute deux superbes papillons. Bon détails et belle profondeur de champs .
Merci et au revoir...JP

I have seen these caterpillars in action, JC.
I used to wonder what made them use this method of travelling; now I know :-).
Very graphic illustration of its movement action in the second shot. It is waving its free end in the air to look for a hold.
Well done and TFS.

Hi Jitti,
Excellent colors and sharp detail. Amazing how they hold 90 percent of their body out there. Dramatic with the darker backround to show them so well.

Hello JC,
Interesting creatures, interesting behaviour!
An educational image with very good details, showing different angles on the insect...
A clean attractive composition, nice work!
Pablo -

  • Great 
  • juanjo Gold Star Critiquer/Silver Note Writer [C: 167 W: 8 N: 27] (1142)
  • [2007-04-05 17:27]

hello Jitti

nice composition of two pictures
the contrast between the green colour of the carterpillar and the grey of Bg is very nice



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