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20 June 2013updated 22 Jul 2021 4:22am

Learning the locusts’ lesson

We depend on insects for our existence, yet we abuse them casually.

By John Burnside

Some years ago, at a time in my life when I was close to unemployable, a friend wangled me a job at Zoology Field Station No 3 (Insect Breeding), which, in spite of its grand title, was a series of small, almost ramshackle wooden huts and a couple of old glasshouses on a tiny plot of land just off Huntingdon Road in Cambridge.

My task there was simple: I grew plants to feed to the locusts and tobacco moths, I carried buckets of food mush into the cockroach house and scattered it across the concrete floor and I vacuumed the glass cases where the various insect tribes lived and died, and, in ways that never ceased to fascinate me, transformed themselves from one form into another. The locusts were my favourites: they would fasten themselves, upside down, to the side of the case, then gradually slip free of their old skin, leaving behind a perfect, if slightly shrunken image of the shining new body that had emerged. It was an astonishingly beautiful process and I would often take my lunch in the locust room so I could watch it happen, over and over, the new form emerging from the old, the massive continuum of transformation that is the essence of what we call nature, occurring before my eyes in one emblematic instance, endlessly repeated, yet always individual in the fine detail.

It is common knowledge, now, that we depend on insects for our continued existence; that, without key pollinators, the human population would collapse in less than a decade. Yet there is no other life form on the planet that we abuse so casually, as the current neonicotinoid controversy shows. In serious matters, our duty is to err on the side of caution – a policy that goes undisputed when the ecology of Wall Street or the City of London is in apparent jeopardy – but when it comes to safeguarding bees, all manner of folk, from government departments to the National Farmers Union, are now up in arms about the proposed ban.

Meanwhile, all over the country, garden centres and hardware stores are stocking their shelves for the summer with a wide variety of poisons, so their untrained and unconcerned customers can eliminate any variety of insect life that might cause them the least annoyance.

In response to the introduction of agricultural DDT in 1945, the great entomologist and popular science writer Edwin Way Teale said, “A spray as indiscriminate as DDT can upset the economy of nature as much as a revolution upsets social economy. Ninety per cent of all insects are good and if they are killed, things go out of kilter right away.”

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When Teale uses the word “good” here, he is speaking from a human point of view. There is no good or bad in nature, which is the great lesson that careful attention to insect life teaches us – and nobody paid closer attention to insects than Teale. He saw how essential even the most common or, to human eyes, annoying bugs are to the economy of nature but he also understood that the lessons they teach us can be subtly philosophical, even spiritual.

“In nature, there is less death and destruction than death and transmutation,” he said – and, as I munched on my cheese and pickle sandwiches in the locust room at Field Station No 3 almost three decades ago, I was subtly, perhaps even subliminally, learning the truth of that saying.

As they move from phase to phase of their life cycles or shrug off an old skin to emerge brightly reborn in the summer light, insects remind us that life’s changes, life’s transmutations, are subtler and more varied than we think – and that our ordinary narratives of profit and loss are rather tawdry compared to the generational play of the butterfly, which in ancient Greece (lest we forget) was synonymous with the soul. 

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