|Copyright: Ram Thakur (ramthakur)
|Date Taken: 2018-03-20|
|Camera: Sony Cyber shot HX50V|
|Photo Version: Original Version|
|Date Submitted: 2018-03-20 7:41|
|[Note Guidelines] Photographer's Note|
|The vegetable farm on my school campus is under invasion of larvae of Cabbage White. The crop season is over and the farm keeper has deliberately left the leaves of cabbage plants open for this invasion. I noticed large congregations of them on quite a few leaves. Here is one.|
Pieris brassicae Larvae
Large white larvae experience four moultings and five instars. The first instar follows hatching of the egg into large white larvae. The larvae are a light yellow in colour with distinctive brown heads and have soft bodies. The larvae appear as if they are very hairy. Following a moulting, the larvae enter the second instar. They have tubercles covered with black hair. In the third instar, large white larvae display more activity. This instar is when the larvae are observed to eat voraciously, and cause significant amounts of damage to their host plant. At this point, they are observed to be more yellow in colour, studded with black dots. Following the third instar, the larvae go through the fourth instar, with similar appearances as the larvae of the third instar, but with more aggrandized size and feeding behaviour. The large white larvae are observed to be cylindrical, robust, and elongated by the fifth instar, yellow in colour and with bright colouration on their abdomen and thorax. They are also observed to have a grey and black head. This instar requires maximum food quality and quantity in order to aid in full development, otherwise the larva dies before becoming an adult butterfly.
meyerd, anel, peter_stoeckl has marked this note useful
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- [2018-03-20 8:31]
I recognise in you the superb teacher who lets his students see by themselves the metamorphosis of caterpillars to butterflies ! When I was a boy my teacher did the same - and metamorphosis became my research object at the University. Thanks for the picture and for the informative, personal note!
- [2018-03-20 9:08]
Excellent shot of this invasion in the vegetable farm of your campus. This place seems to be your favorite location to take shots. And you make there quite a lot of discoveries.
Thanksfor this beautiful picture and the explanations.
Mit herzlichen Grüssen
hallo Ram very good details of this group
good sharpness and beautiful colours
thanks gr lou
- [2018-03-20 15:54]
Hi Ram,a scene that i seen many times in my country too,but it's too easy to find larvae of Inachis io because there aren't a lot of cabbage but a lot of orticae in my fields. A great macro with perfect details everywhere,a symbol of springtime,a bit in delay there,still very cold. Have a nice day and thanks,Luciano
a clear and precise, impressively matter-of-fact presentation of the results of successful courtship among Cabbage Whites as shown in your previous postings - a charming trilogy on life, indeed.
Highly instructive notes that tell us a lot of details. So your picture is showing us at least two different stages of caterpillar instars.
Wondering why the farm keeper on your school campus "deliberately left the leaves of cappage plants" after the end of crop season. Did he wisely do so in order to give cabbage whites a good chance to develop a next gereration to be shown to scholars and other people of interest?
Thank you! With best regards,