Beware: caterpillars processing!

The caterpillars of the pine processionary moth (thaumetopoea pityocampa) come out any time between February and April each year.

Pine processionary moth caterpillar nest Pine processionary moth caterpillar nest Photo: Vivian Grisogono

In 2022 there have been large numbers of the fine woolly nests of these caterpillars all around Hvar. They are exquisitely delicately formed, an example of Nature's perfection. Female moths lay their eggs on the branches of pine trees, The caterpillars form their nests from silken threads, which keep them warm and protected through the winter. They feed from the branch on which the nest has been spun. When the caterpillars leave, the nest disappears, leaving no trace of itself.

Pine processionary moth caterpillar nest. Photo: Steve Jones

The journey of the caterpillars out of their nests in search of the ideal place to pupate is fascinating. They form long columns, nose to tail, following a leader in apparently random exploration over a surprisingly wide area. If they meet another column going in a different direction, one column splits to allow the other through, then reforms and continues on its way. When the leader finds the right place, the caterpillars burrow underground to pupate, emerging as moths from the early summer onwards.

The caterpillars in procession. Photo: Steve Jones

Left alone, the caterpillars do no harm. However, they are heavily armed! When touched, they cause an extremely uncomfortable allergic reaction. There is a specific danger for dogs. Treading on the caterpillars or coming into any contact with them causes a severe inflammatory reaction. If the dog licks the affected area, its tongue can be badly damaged, which in the worst of cases can be fatal.

Leaving the nest. Photo: Vivian Grisogono

It's been reported that the caterpillars have started processing in early February. Dog owners beware! Don't go walking in the pine woods until the nests are empty. If your dog comes into contact with the caterpillars, consult the vet as quickly as possible.

You are here: Home Nature Watch Beware: caterpillars processing!

Eco Environment News feeds

  • Campaigners say last-minute compromise plays into the hands of petrostates and industry influences

    Campaigners are blaming developed countries for capitulating at the last minute to pressure from fossil fuel and industry lobbyists, and slowing progress towards the first global treaty to cut plastic waste.

    Delegates concluded talks in Ottawa, Canada, late on Monday, with no agreement on a proposal for global reductions in the $712bn (£610bn) plastic production industry by 2040 to address twin issues of plastic waste and huge carbon emissions.

    Continue reading...

  • Some crops completely wiped out and dramatic falls in yields being predicted in county which reflects crisis in rest of UK

    With his farm almost entirely surrounded by the banks of the River Severn in north Shropshire, Ed Tate is used to flooding on his land – but this year, the sheer level of rainfall is the worst he has ever seen.

    He points to a field where about 20% of wheat crops have failed as they have been covered with rainwater that has pooled in muddy puddles, in areas that would usually be a sea of green by now.

    Continue reading...

  • Long Dean, Cotswolds: The relentless rainfall we’ve had this year continues to dominate the farm, and we’ve had a significant loss here too

    I decided this morning that I couldn’t wait any longer and I whistled the cattle through to the river meadow. Grass, which has been growing and green all winter, is now shin high in places, but there are areas of wet where heavy trampling would disproportionately damage the soil structure.

    April did what April does, namely cruel winds and sharp showers, perpetuating a more or less eight-month long mono-season – or perhaps that should be monsoon. Since finishing the last of my hay, I’ve had to balance protecting sodden ground from heavy trampling with losing the benefit of spring grazing. The cattle are looking at their most bucolic, blue sky unfurled overhead, a constellation of dandelions at their feet. Already they are shedding their winter coats, but, almost in contradiction, they continue to wear muddy stockings up to their hocks.

    Continue reading...

  • In a first, researchers were able to compare records of people who drank polluted water in Veneto, Italy, with neighbors who did not

    For the first time, researchers have formally shown that exposure to toxic PFAS increases the likelihood of death by cardiovascular disease, adding a new level of concern to the controversial chemicals’ wide use.

    The findings are especially significant because proving an association with death by chemical exposure is difficult, but researchers were able to establish it by reviewing death records from northern Italy’s Veneto region, where many residents for decades drank water highly contaminated with PFAS, also called “forever chemicals”.

    Continue reading...

  • Analysts say impact on wheat, barley, oats and oilseed rape harvests means price rises on beer, bread and biscuits and more food imported

    UK harvests of important crops could be down by nearly a fifth this year due to the unprecedented wet weather farmers have faced, increasing the likelihood that the prices of bread, beer and biscuits will rise.

    Analysis by the Energy and Climate Intelligence Unit (ECIU) has estimated that the amount of wheat, barley, oats and oilseed rape could drop by 4m tonnes this year, a reduction of 17.5% compared with 2023.

    Continue reading...

  • Levy on oil and gas majors in richest countries would help worst-affected nations tackle climate crisis, says report

    A new tax on fossil fuel companies based in the world’s richest countries could raise hundreds of billions of dollars to help the most vulnerable nations cope with the escalating climate crisis, according to a report.

    The Climate Damages Tax report, published on Monday, calculates that an additional tax on fossil fuel majors based in the wealthiest Organisation for Economic Co-operation and Development (OECD) countries could raise $720bn (£580bn) by the end of the decade.

    Continue reading...

  • Nitrogen, phosphorus, chloride, oil and cyanide among the 371m lb of pollutants released by just 41 plants in five years

    Tyson Foods dumped millions of pounds of toxic pollutants directly into American rivers and lakes over the last five years, threatening critical ecosystems, endangering wildlife and human health, a new investigation reveals.

    Nitrogen, phosphorus, chloride, oil and cyanide were among the 371m lb of pollutants released into waterways by just 41 Tyson slaughterhouses and mega processing plants between 2018 and 2022.

    Continue reading...

  • League is in unique position to help with climate crisis, setting ambitious goal for a 50% drop in its carbon footprint by 2030

    From a climate perspective, the world is in peril. It’s undeniable at this point. Today, though, there are organizations working to find solutions. But when it comes to the universe of pro sports, which has long been a source of pollution like other big businesses, where can answers be found? That’s the question those within leagues like the National Basketball Association are debating now. While the NBA has its own challenges when it comes to air travel and its carbon footprint, the league is also progressing forward with substantive changes, small and large, to assuage the climate crisis. And it’s in a unique position to do just that.

    Unlike anonymous research departments or lesser-known scientific organizations, the NBA is one of the most popular outfits in the world. It’s on the minds and lips of millions of people on a daily basis. This gives it the chance to manufacture change. A point not lost on many around the league.

    Continue reading...

  • After the trauma of losing their spouse and breadwinner to the Sundarbans’ great predator, women are cast out by their superstitious communities. But they are coming together to rebuild their lives

    Nobody saw exactly what happened in the minutes leading up to Aziz Murad’s death. But when his friends got back to the boat where they had left him, they found only his severed hand in the fishing net he was untying.

    “We were only gone for about five minutes,” says Abu Sufyan, who was first to reach the boat. “When we got back, he was gone and there was blood everywhere.”

    Continue reading...

  • A new plan may stop tourists who visit the enormous salt pan 700km north of Adelaide from driving or walking on sacred ground – or into trouble

    When Bronwyn Dodd looks out across Kati Thanda-Lake Eyre, an expanse covering almost 1,000 sq km in the middle of a national park, she thinks of home.

    It’s a place both sacred and dangerous, she says, which is why there’s a plan to stop people walking on the lake bed without permission.

    Continue reading...

Eco Health News feeds

Eco Nature News feeds

  • Countries around the world are trying to bring fish populations back from the brink after decades of overfishing. But some marine protected areas are falling short with a certain type of fish. Here’s why.

  • In the third year of the sweeping global PBS series “Changing Planet,” Conservation International CEO M. Sanjayan explores how climate change is affecting some of Earth’s most vulnerable ecosystems — and the groundbreaking science that’s offering hope.

  • A new documentary takes viewers on a trip around the world to explore one of nature’s most powerful — yet overlooked — climate allies: blue carbon.

  • Kenya’s Reteti Elephant Sanctuary — the first community-owned elephant sanctuary in East Africa — provides a place for injured elephants to heal and a home for elephants orphaned by poaching.

  • Earth lost 3.7 million hectares (9.2 million acres) of tropical forest last year, an area nearly the size of the Netherlands. Yet amid these sobering findings, there are signs of hope.

  • Earth has lost 2 billion metric tons of “irrecoverable carbon” since 2018 — an amount greater than the United States’ annual greenhouse gas emissions — underscoring the need to halt deforestation and expand protected areas.

  • As dangerous heatwaves shatter records around the world, a new study provides the most comprehensive review yet of how to stop deforestation — a major cause of climate-warming greenhouse gases, second only to fossil fuel emissions.

  • Every day, billions of cups of coffee are consumed around the world — and experts say demand could triple over the next 30 years. So, how will all those lattes, espressos and cold brews affect the environment?

  • In an announcement today at New York Climate Week, nine philanthropic organizations pledged US$ 5 billion over the next decade to support the creation and expansion of protected areas, sustainable management of the world’s oceans and Indigenous-led conservation.

  • Ana Gloria Guzmán-Mora is the executive director of Conservation International’s Costa Rica program, where she works with local communities and governments to help them meet their goals for protecting the planet.