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Thomisidae feeding Junonia almana on Acmella ciliata-Kadavoor-2015-08-21-001
 

 

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Picture of the day This image was selected as picture of the day on Wikimedia Commons for . It was captioned as follows:
English: A Thomisus species thomisidae feeding a Junonia almana on a Acmella ciliata flower.
Potd-logo.svg এই চিত্রটি ২০১৬-০১-০১ তারিখে বাংলা উইকিপিডিয়ায় আজকের নির্বাচিত চিত্র হিসেবে প্রধান পাতায় স্থান পেয়েছিল।


Thomisus Walckenaer, 1805

Description
English: A Thomisus species Thomisidae feeding a Junonia almana on a Acmella ciliata flower.

Older females require large amounts of relatively large prey to produce the best possible clutch of eggs. The female is able to undergo white to yellow or pink colour changes depending on the flower they are sitting on. These spiders change color by secreting a liquid yellow pigment into the outer cell layer of the body. This colour change facilitates camouflage on flower ambush sites and is completed within a few days.


They are sedentary spiders and is usually noticed only when one sees a strangely positioned, usually upside down, insect and upon investigation, the insect can be seen to be in the grips of a spider. They wait for flying insects to settle, patient and motionless, with outstretched legs. When the prey is within range, they close their powerful front legs, catching the insect which can be up to 10 times their size. The insect is then bitten behind the head and killed. The insides are dissolved with enzymes and sucked from the exoskeleton and the empty, perfect form of the insect is dropped to the ground.
Gender Female
Place of discovery
English: Kadavoor, Kerala, India.
Date
Photographer Jeevan Jose, Kerala, India
Notes The equipment used to produce this media are acquired through community support.
Source Own work
Permission
(Reusing this file)
I, Jeevan Jose, Kerala, India, have published this media under the terms of the license CC BY-SA 4.0 which grant you to (subject to the terms and conditions of that public license):
  • to Share — reproduce and share the licensed material, in whole or in part
  • to Adapt — produce, reproduce, and share adapted material

Under these conditions:

Other versions
Camera location 10° 00′ 10.73″ N, 76° 44′ 00.52″ E View this and other nearby images on: OpenStreetMap - Google Earth info
Photo's description:
A Thomisus species Thomisidae feeding a Junonia almana on a Acmella ciliata flower. Older females require large amounts of relatively large prey to produce the best possible clutch of eggs. The female is able to undergo white to yellow or pink colour changes depending on the flower they are sitting on. These spiders change color by secreting a liquid yellow pigment into the outer cell layer of the body. This colour change facilitates camouflage on flower ambush sites and is completed within a few days. They are sedentary spiders and is usually noticed only when one sees a strangely positioned, usually upside down, insect and upon investigation, the insect can be seen to be in the grips of a spider. They wait for flying insects to settle, patient and motionless, with outstretched legs. When the prey is within range, they close their powerful front legs, catching the insect which can be up to 10 times their size. The insect is then bitten behind the head and killed. The insides are dissolved with enzymes and sucked from the exoskeleton and the empty, perfect form of the insect is dropped to the ground. Gender Female Place of discovery English: Kadavoor, Kerala, India. Date 21 August 2015


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EXIF data:
File name thomisidae_feeding_junonia_almana_on_acmella_ciliata-kadavoor-2015-08-21-001.jpg
Size, Mbytes 8.9710166015625
Mime type image/jpeg
Camera manufacturer SONY
Camera model SLT-A33
Orientation of image 1
Image resolution in width direction 300
Image resolution in height direction 300
Unit of X and Y resolution 2
Exposure time 1/160 sec (0.00625)
F number f / 8
Exposure program 1
ISO speed rating 100
Exif version 0230
Lens focal length 150 mm
Date and time original image was generated 2015:08:21 16:07:22
Date and time image was made digital data 2015:08:21 16:07:22
Brightness 5.37
Exposure bias 0
Maximum lens aperture 3
Metering mode 2
User comments
Light source 4
Scene type 
Exposure mode 1
White balance 80
Focal length in 35 mm film 225 mm
Software used RawTherapee




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