Excuse Me, Where Did All The Christmas Beetles Go?
Turns out the answer is just as depressing as we expected.
Christmas beetles — the iridescent critters usually found whacking into human limbs, clinging on fly screens, or frantically wriggling to get off their backs — have all but disappeared. Their staple, en masse appearance around the holiday season has been noticeably absent in recent years and the reason is as obvious as it is tragic.
It’s kind of sad that we don’t see Christmas beetles anymore. Once upon a time you couldn’t imagine an Australian summer evening without them.
— Henry Woo (@DrHWoo) December 6, 2020
Scientists believe climate change and urbanisation are the reasons the native scarabs have gone MIA: adult Christmas beetles can’t access their food supplies as easily, and little baby larvae no longer have the right conditions to thrive and grow, dying in insect infancy.
A guerrilla Christmas beetle investigator, Kara Jensen-Mackinnon from Schwartz Media’s 7AM podcast said natural disasters like drought, bushfires, and changing weather patterns can also screw over the population, while man-made actions like land clearing and pesticides also play a role in Christmas beetles’ demise.
The ramifications screw over the wider food chain as well.”They’re the tasty little lunch of magpies and cockatoos and kookaburras, and to see a decrease in their population, we’re seeing huge repercussions in these micro ecosystems,” said Jensen-Mackinnon.
While anecdotally viable, scientists can’t fully corroborate the claims just yet. “Everybody feels like numbers are going down, and people claim that we don’t see them in the numbers that we used to, we don’t have that data,” University of Sydney entomologist Tanya Latty told the ABC.
She urged fellow passionate eco-saviours to log their Christmas beetle sightings on Invertebrates Australia’s communal tracker for better data that will help save their population from dwindling any more. Because who wouldn’t want the next generation to experience the joy and presence of a beetle literally known as ‘cockchafers’ overseas.
— Dr Kate Umbers (@kateumbers) January 10, 2021
But perhaps with La Niña rainfall, there’s a glimmer of hope after all, Australia Museum’s resident beetle guy Dr Chris Reid told 9News.
“This year has seen good conditions for them – a wet winter and spring – so the emergence success rate of adults is good, but there are just so few after so many bad years,” said Reid. “Next year will be critical – if it is good as well, then we should see better numbers, the successful emergence of the offspring from this years’ adults.”
Feature Image: Dr Kate Umbers / Twitter