Carrying death on its back!

At first sight, the caterpillar appeared to be carrying its food, but it was actually the eggs of a wasp; the larvae would consume the caterpillar when they hatched. One more drama by Nature.

I had taken the children of the Sindhi School, in Malleswaram, on a nature trail to the Bannerghatta Zoo area, and it was they who spotted this very interesting-looking caterpillar, and asked me what it was.

“Looks as if the caterpillar has also packed a lot of lunch for a picnic in the Zoo!” joked one of the children. The reality, as I found out, was very, very different… this caterpillar was actually carrying its own death on its back, not its food!

 

A variety of wasps called ‘Braconids,’ deposit their eggs on the backs of certain caterpillars, like this one. They cause these “host” caterpillars to become less active, and often sterile. When the eggs hatch, later, the newly-emerged larvae will feed on the caterpillar. So… the caterpillar was not carrying food… it was going to *be* the food!

This is just another example of the drama that nature provides, under our feet, and right in our gardens. So the next time you look at a caterpillar, do indulge your curiosity about any details you may notice about it. Thanks to the students of the Sindhi School, and their tireless teacher, Subbalakshmi (she takes the children on outings on her own initiative), I too learnt this riveting lesson of the natural world.

Comments:

  1. Uma says:

    Yes, even I have seen this type of caterpillar in our apartment wall. One day my son came running and asked my phone to take some photograph of something very odd. He was saying “Mummy I have seen a new variety of caterpillar, come soon, It’s awesome”.

    I went and saw. I too thought like that only. Maybe a different variety of caterpillar. Now after reading this article only I understood.

  2. Deepa Mohan says:

    Nice observation…our children notice more than we do!

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Story

Pallikaranai Marsh’s Zone of Influence: Threat or shield for South Chennai?

Pallikaranai Marsh acts as a buffer against Chennai floods. Protecting homes and ecology around it needs a proper ZoI, not weak rules.

Every monsoon, South Chennai goes underwater. The only sponge that soaks up all that rain is the Pallikaranai Marsh, yet around it, 8,619 hectares of land face severe flood risks. Despite this, the State has offered to protect only a fraction of that land.  On October 9th, the Tamil Nadu State Wetlands Authority (TNSWA) told the Madras High Court  that the marsh's interim Zone of Influence (ZoI) is just 36 survey numbers, covering 128.19 hectares. The next hearing of the case is on November 11th.  Scattered "protection"  These plots lie in bits and pieces across seven villages, from Pallikaranai to Perumbakkam.…

Similar Story

Blocked Kovalam-Nemmeli wetland channels risk disaster for South Chennai; Conservationists urge action  

Barriers built for the Mamallan Reservoir block Buckingham Canal water flow, vital to keep the wetland alive, avoid floods and sustain fishing families.

In Chengalpattu district, the main water channels of the Kovalam-Nemmeli coastal wetland, which drains a catchment of more than 270 square kilometres, have currently been blocked. Barriers that obstruct water flow have been built across Chennai's Buckingham Canal at three places: Thiruvidanthai-Vadanemmeli, near the Nemmeli-Thiruporur bridge, and Saluvankuppam. Earlier, we explored how the Mamallan Reservoir causes serious damage to the wetland’s ecology and how fishing livelihoods are affected. Field investigations by the Wetland Conservation Network have recorded the blockages preventing tidal exchange in the Buckingham Canal.           According to officials, these barriers were put up to enable construction of the Mamallan…