Springfield and Camira residents have reported an unusual swarm of Christmas beetles descending upon their neighbourhoods, creating a spectacle with many locals buzzing with excitement and curiosity.
On Monday evening, 11 Nov, hundreds of Christmas beetles appeared in the suburbs of Springfield and Camira. Locals took to social media to share their astonishment as beetles flocked to homes, covering walls, cars, and windows.
Some residents described hearing a constant tapping sound as beetles collided with glass surfaces, mistaking the noise for heavy raindrops. By morning, crows had gathered in the area, feasting on beetles scattered across lawns and driveways.
Beetles Emerge with Warm Weather
Entomologists have linked the sudden emergence of Christmas beetles to the recent heatwave that swept across South East Queensland. Ipswich reached a peak of 38 degrees Celsius last week.
According to Associate Professor Tanya Latty from the University of Sydney, high temperatures help speed up the development of Christmas beetle larvae, causing them to emerge in greater numbers than usual. Ms Latty explains that when conditions are particularly warm, the larvae develop faster, leading to an early metamorphosis from pupae to adult beetles, often synchronising their emergence.
Although Christmas beetles typically begin appearing in mid-November, the recent heatwave may have triggered an early emergence, with reports of the insects appearing as early as October in previous years. This shift may be linked to global warming trends contributing to warmer-than-average spring temperatures across Queensland.
Sightings on the Decline
Historically, Christmas beetles have appeared in such numbers that they covered entire trees and were even noted in early records as swarming over Sydney Harbour, their collective shimmer lighting up the water. However, in recent years, there has been a noticeable decline in their numbers, as observed anecdotally by locals and experts alike.
Ms Latty noted that while swarms like the recent one in Springfield and Camira offer a glimpse of their previous abundance, the overall population of Christmas beetles has significantly decreased, likely due to habitat loss, pollution, and climate changes.
Public Reports Aid Research
In response to declining sightings, the University of Sydney launched the Christmas Beetle Count project four years ago, encouraging the public to report their encounters with the beetles. This initiative has provided researchers with valuable data, helping identify regions where Christmas beetle species are thriving or declining.
Ms Latty shared that sightings submitted by the public have revealed information about species that had not been recorded for decades, underscoring the importance of citizen contributions in monitoring and conservation efforts.
Published 13-Nov-2024
