Category Archives: Insects

A humanitarian crisis looms in Africa unless we act fast to stop the desert locust

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The destructive migratory pest threatens catastrophe as it swarms through countries already plagued by food insecurity

A colleague at the UN’s Food and Agriculture Organization (FAO) tells a terrifying story about the desert locust.

In 2005 she visited farmers in Niger as they prepared to harvest their crops. Just hours later, a swarm of locusts swept through the area and destroyed everything. One month later, truckloads of families were forced to leave their homes because they had nothing to eat.

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Fear in Mexico as twin deaths expose threat to monarch butterflies and their defenders

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The deaths of two butterfly conservationists have drawn focus to a troubling tangle of disputes, resentments and violence

The annual migration of monarch butterflies from the US and Canada is one of the most resplendent sights in the natural world – a rippling orange-and-black wave containing millions of butterflies fluttering instinctively southward to escape the winter cold.

The spectacle when they reach their destination in central Mexico is perhaps even more astonishing. Patches of alpine forest turn from green to orange as the monarchs roost in the fir trees, the sheer weight of butterflies causing branches to sag to the point of snapping. Tens of thousands of the insects bounce haphazardly overhead, searching replenishment from nearby plants.

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Bumblebees’ decline points to mass extinction – study

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Populations disappearing in areas where temperatures are getting hotter, scientists say

Bumblebees are in drastic decline across Europe and North America owing to hotter and more frequent extremes in temperatures, scientists say.

A study suggests the likelihood of a bumblebee population surviving in any given place has declined by 30% in the course of a single human generation. The researchers say the rates of decline appear to be “consistent with a mass extinction”.

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Kenya suffers worst locust infestation in 70 years as millions of insects swarm farmland

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UN urges immediate action as east African nations already experiencing devastating hunger see large areas of crops destroyed

The worst outbreak of desert locusts in Kenya in 70 years has seen hundreds of millions of the insects swarm into the east African nation from Somalia and Ethiopia. Those two countries have not had an infestation like this in a quarter century, destroying farmland and threatening an already vulnerable region with devastating hunger.

“Even cows are wondering what is happening,” said Ndunda Makanga, who spent hours Friday trying to chase the locusts from his farm. “Corn, sorghum, cowpeas, they have eaten everything.”

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Locusts swarm into Kenya as UN warns of ‘extreme danger’ to food supply

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Government races against time to contain threat to key food-producing regions in country still reeling from droughts and floods

The UN has warned of a “significant and extremely dangerous” escalation in the number of desert locusts descending on Kenya, as the government strives to contain the threat before it reaches the country’s food-producing regions.

The tropical grasshoppers have been wreaking havoc on Kenya’s neighbours to the north and east, devouring tens of thousands of hectares of crops in Ethiopia and Somalia since last June.

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‘Like sending bees to war’: the deadly truth behind your almond-milk obsession

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Bees are essential to the functioning of America’s titanic almond industry – and billions are dying in the process

Dennis Arp was feeling optimistic last summer, which is unusual for a beekeeper these days.

Thanks to a record wet spring, his hundreds of hives, scattered across the central Arizona desert, produced a bounty of honey. Arp would have plenty to sell in stores, but more importantly, the bumper harvest would strengthen his bees for their biggest task of the coming year.

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Urgent new ‘roadmap to recovery’ could reverse insect apocalypse

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Phasing out synthetic pesticides and fertilisers and aggressive emission reductions among series of solutions outlined by scientists

The world must eradicate pesticide use, prioritise nature-based farming methods and urgently reduce water, light and noise pollution to save plummeting insect populations, according to a new “roadmap to insect recovery” compiled by experts.

The call to action by more than 70 scientists from across the planet advocates immediate action on human stress factors to insects which include habitat loss and fragmentation, the climate crisis, pollution, over-harvesting and invasive species.

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Light pollution is key ‘bringer of insect apocalypse’

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Exclusive: scientists say bug deaths can be cut by switching off unnecessary lights

Light pollution is a significant but overlooked driver of the rapid decline of insect populations, according to the most comprehensive review of the scientific evidence to date.

Artificial light at night can affect every aspect of insects’ lives, the researchers said, from luring moths to their deaths around bulbs, to spotlighting insect prey for rats and toads, to obscuring the mating signals of fireflies.

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Footage shows world’s fastest ants at top speed – video

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New video footage reveals the world's fastest ants galloping across the scorching sand of the Sahara at speeds approaching one metre per second, which is the equivalent of a house cat tearing about at 120mph.

Researchers have found that at full pelt the Saharan silver ants can travel 108 times their body length per second in gallops that brought all six legs off the ground at once

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People v mosquitos: what to do about our biggest killer

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These tiny pests adapt so successfully to changing conditions that they have become humankind’s deadliest predator. We might soon be able to eradicate them – but should we? By Timothy Winegard

We are at war with the mosquito. A swarming and consuming army of 110tn enemy mosquitoes patrols every inch of the globe except for Antarctica, Iceland and a handful of French Polynesian micro-islands. The biting female warrior of this droning insect population is armed with at least 15 lethal and debilitating biological weapons, to be used against 7.7 billion humans deploying suspect and often self-detrimental defensive capabilities. In fact, our defence budget for personal shields, sprays and other means of deterring her unrelenting raids is $11bn (£8.8bn) a year, and rising rapidly. And yet her deadly offensive campaigns and crimes against humanity continue with reckless abandon. While our counterattacks are reducing the number of casualties she perpetrates – malaria deaths in particular are declining rapidly – the mosquito remains the deadliest hunter of human beings on the planet.

Taking a broad range of estimates into account, since 2000, the average annual number of human deaths caused by the mosquito was around 2 million. Humans came in a distant second at 475,000, followed by snakes (50,000), dogs and sandflies (25,000 each), the tsetse fly, and the assassin or kissing bug (10,000 each). The fierce killers of lore and Hollywood celebrity were much further down our list. The crocodile was ranked 10th, with 1,000 annual deaths. Next on the list were hippos with 500, and elephants and lions with 100 fatalities each. The much-slandered shark and wolf shared 15th position, killing an average of 10 people per annum.

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Berlin’s bumbling beekeepers leave swarms without homes

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Inexperienced hobbyists force bees to search often in vain for suitable habitats across the city

Humans are not the only ones in Berlin struggling to find accommodation. A beekeeping boom has led to swarms of bees forming novel new hives using anything from motorbikes to balconies in the German capital.

Germany’s beekeeping association has been forced to dispatch a growing band of swarm-catchers – or schwarmfänger – reachable via telephone hotlines, to deal with a deluge of incidents in which thousands of bees cluster round objects while scout bees go in search of suitable homes, such as a tree hollow, more often than not in vain.

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Turf it out: is it time to say goodbye to artificial grass?

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It’s neat, easy – and a staggering £2bn global market. But as plastic grass takes over our cities, some say that it’s green only in colour

If your attention during the Women’s World Cup was on the pitch rather than the players, you might have noticed that the matches were all played on real grass. That was a hard-won change, made after the US team complained to Fifa that they sustained more injuries on artificial turf.

In private gardens, however, the opposite trend is happening: British gardens are being dug up and replaced with plastic grass. But this isn’t the flaky, fading stuff on which oranges were once displayed at the greengrocer. Today’s artificial grass is nearly identical to the real thing.

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House orders Pentagon to review if it exposed Americans to weaponised ticks

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A New Jersey lawmaker suggests the government turned insects into bioweapons to spread disease and possibly released them

The US House of Representatives has called for an investigation into whether the spread of Lyme disease had its roots in a Pentagon experiment in weaponising ticks.

The House approved an amendment proposed by a Republican congressman from New Jersey, Chris Smith, instructing the defence department’s inspector general to conduct a review of whether the US “experimented with ticks and other insects regarding use as a biological weapon between the years of 1950 and 1975”.

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US beekeepers lost 40% of honeybee colonies over past year, survey finds

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Study marks worst winter on record for beekeepers, despite intensive push to stem losses

Beekeepers across the US lost four in 10 of their honeybee colonies over the past year, as the worst winter on record for tracked bee populations raised fresh concerns over the plight of the crucial pollinators.

Over the past winter, 37% of honeybee colonies were lost to beekeepers, the worst winter decline recorded in the 13-year history of a nationwide survey aimed at charting bees’ fortunes. Overall, 40% of colonies died off over the entire year to April, which is above the 38% average since the survey began.

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The battle to save the world’s biggest bumblebee from European invaders | Alison Benjamin

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In Chile the beloved native bee is venerated as carrying the spirit of the dead, but its numbers are dwindling as farmers use imported species infected with parasites to pollinate crops

The first time José Montalava saw the world’s largest bumblebee he was six years old and visiting his grandfather’s house in rural Chile. “It was in the tomato patch, a huge, loud, fluffy orange thing buzzing around. I remember trying to grab it, but it kept getting away, although it looked too heavy to fly,” he recalls.

During Montalava’s childhood, these giant golden bumblebees (Bombus dahlbomii) – which can measure up to 40mm and have been dubbed “flying mice” – were a common sight in the town where he grew up in central Chile. “It’s such a striking, charismatic, colourful bumblebee that used to herald spring,” says the 36-year-old entomologist. “Now it’s totally disappeared from my hometown and many other areas.”

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Mosquito-spread diseases may endanger millions in new places due to climate change

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Study finds that places where people have never had the diseases could see bad outbreaks if they aren’t prepared

Half a billion more people could be at risk from mosquito-transmitted diseases within 30 years as a result of the warming climate, according to a new study.

Canada and parts of northern Europe could be newly exposed to the threat. People there could come into contact with yellow fever, Zika, dengue and chikungunya, as well as other emerging diseases.

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Widespread losses of pollinating insects revealed across Britain

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Wild bees and hoverflies lost from a quarter of the places they were found in 1980, study shows

A widespread loss of pollinating insects in recent decades has been revealed by the first national survey in Britain, which scientists say “highlights a fundamental deterioration” in nature.

The analysis of 353 wild bee and hoverfly species found the insects have been lost from a quarter of the places they were found in 1980. A third of the species now occupy smaller ranges, with just one in 10 expanding their extent, and the average number of species found in a square kilometre fell by 11.

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World’s food supply under ‘severe threat’ from loss of biodiversity

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Plants, insects and organisms crucial to food production in steep decline, says UN

The world’s capacity to produce food is being undermined by humanity’s failure to protect biodiversity, according to the first UN study of the plants, animals and micro-organisms that help to put meals on our plates.

The stark warning was issued by the Food and Agriculture Organisation after scientists found evidence the natural support systems that underpin the human diet are deteriorating around the world as farms, cities and factories gobble up land and pump out chemicals.

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World’s largest bee, missing for 38 years, found in Indonesia

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Biologists discover single female Wallace’s giant bee inside a termites’ nest in a tree

As long as an adult thumb, with jaws like a stag beetle and four times larger than a honeybee, Wallace’s giant bee is not exactly inconspicuous.

But after going missing, feared extinct, for 38 years, the world’s largest bee has been rediscovered on the Indonesian islands of the North Moluccas.

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Plummeting insect numbers ‘threaten collapse of nature’

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Exclusive: Insects could vanish within a century at current rate of decline, says global review

The world’s insects are hurtling down the path to extinction, threatening a “catastrophic collapse of nature’s ecosystems”, according to the first global scientific review.

More than 40% of insect species are declining and a third are endangered, the analysis found. The rate of extinction is eight times faster than that of mammals, birds and reptiles. The total mass of insects is falling by a precipitous 2.5% a year, according to the best data available, suggesting they could vanish within a century.

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