Articles tagged with Lepidoptera
Butterflies use optical illusions to confuse predators, creating motion illusion effects that scramble a predator's aim. The patterns on their wings interfere with the way visual systems try to guess the direction and speed of moving things, boosting false motion cues.
A new study by Concordia researchers reveals that exposure to wildfire smoke during larval development causes higher rates of wing deformities in spruce budworm and forest tent caterpillar moths. The moths also become heavier, a result that may reflect higher mortality among smaller, weaker individuals.
A new global framework for insect conservation tackles the major blind spot in biodiversity conservation, proposing locally led research and collaboration. The framework identifies four major obstacles to tropical insect conservation and proposes combining conventional scientific research with regional and non-English literature.
Researchers found that hot temperatures during development reduced the brightness of Morpho butterfly iridescence, making them duller and more susceptible to predation. The effects of this color change on predators or possible mates remain unknown.
A new study by Dr Esme Ashe-Jepson finds that butterflies are primarily responding to climate change by shifting their distributions to cooler elevations. Large and pale species have an advantage in thermoregulation, leading to changes in butterfly communities along the elevational gradient.
New research reveals alpine butterflies closely match local warming in range shifts, but habitat availability drives community composition and climate change response. The study finds that butterfly communities have become warmer-adapted over the past two decades, with specialist species vulnerable to elevational hostplant mismatches.
The Colobura butterfly was previously believed to be a single species, but recent discoveries have confirmed the existence of three distinct species. Despite their similar appearance, each species exhibits unique characteristics, such as differences in caterpillar markings and gray band patterns on forewings.
A University of Bristol-led study found that tropical butterflies of the Heliconius tribe live up to three times longer than their closest relatives, with some species surviving for almost a year. The researchers discovered that these butterflies have evolved a unique strategy for extending lifespan and slowing down aging.
A recent study maps the evolutionary history of hawkmoths, revealing a co-evolutionary arms race between these insects and flowers. The relationship leads to a cycle of nectar spur lengthening and proboscis evolution, with some species developing long tongues to feed on specific orchids.
Researchers discovered that rice plants use floral volatiles to attract fall armyworm caterpillars, which then get trapped in spikelets covered with trichomes. The study found that about 50% of the caterpillars were trapped and killed within 48 hours.
A new study warns of a 20-year window to act on climate and land use policies to prevent further biodiversity loss in Britain. Sustainable practices like strong emissions action and reduced meat consumption could save up to 69 fewer species from extinction.
The Safeguard project, which aimed to expand understanding of declining wild pollinators, has come to an end. The project delivered a comprehensive reassessment of European wild pollinator trends and developed an integrated assessment framework to guide evidence-based management.
Researchers shed light on moths & butterflies' evolution, conservation needs, and diverse feeding habits. Discoveries suggest that these insects obtained plant-digesting abilities from fungi, while mandibled moths were once more diverse but largely extinct.
Researchers found caterpillars mimic ant signals using precise rhythmic beats to gain acceptance, feeding, and protection. The most ant-dependent species produce regular, complex rhythms similar to those used by ants.
A study predicts that climate change will shift suitable habitat for monarch butterflies southwards, disrupting their mass migration. The results show a decline in suitable habitat of between 8% and 40% by 2070, fracturing existing migrating routes.
Researchers at Binghamton University discovered that caterpillars can hear airborne sounds via microscopic hairs on their bodies. The study found that the caterpillars were 10 to 100 times more responsive to airborne sound than surface vibrations felt on their feet, suggesting a new approach for improving microphone technology.
A new study in Systematic Entomology reveals that evasive butterfly mimicry in the genus Adelpha may be a rare and overlooked type of mimicry. The researchers found that Adelpha butterflies use speed and unpredictability as a defense mechanism, making them difficult to catch for birds and other predators.
The Florida Museum of Natural History has published 'The Butterflies of California' after five decades of work by brothers Thomas and John Emmel. The book, which clocks in at 854 pages, explores the diversity and life histories of butterflies in western North America.
In a study published in the Journal of Experimental Biology, researchers from Kobe University found that hawkmoth larvae and pupae produce defensive sounds when stimulated. These sounds are released through respiratory openings and resemble snake warning signals, potentially helping the insects evade predators.
Researchers investigate cryopreservation as a tool for conservation, using the European subspecies of the Swallowtail to assess its viability. If effective, it could support long-term strategies like breeding programs and reintroduction efforts.
Marcin Wiorek joins Nota Lepidopterologica as co-Editor-in-Chief, succeeding David Lees. He brings expertise in Lepidoptera systematics and phylogeny to the journal. Wiorek's research focuses on tiger moths and has been recognized with a recently obtained PhD.
The 'Grassland Butterfly Index' shows a significant decline in butterfly populations in Germany from 2016 to 2023, with some species decreasing by up to 50%. This trend is consistent with European-wide declines, highlighting the need for effective conservation measures to protect these important ecosystem indicators.
A study found that ants can scare away pollinators like bees when defending plants with extrafloral nectaries, which are secretions that attract ants but not pollinators. However, plants with these glands on other locations had increased reproductive success.
A previously mistaken moth has been identified as a new species, Carcina ingridmariae, with significant genetic differences from its lookalike relative. The species was discovered using DNA barcoding and has a wingspan of about 2 cm, found across the eastern Mediterranean.
Researchers found that the caterpillars' cycles interact with natural controls like viral disease, and they're highly adapted to their environment. Outbreaks can be predicted and damage controlled, but the exact timing is linked to specific factors.
A new study sequenced the genomes of glasswing butterflies, revealing six previously unrecognized species and shedding light on their rapid diversification. The research also showed that these butterflies use chemical communication to recognize each other, despite their similar appearances.
A large international team genetically maps glasswing butterflies across Central and South America, rewriting the evolutionary tree and highlighting six new species. This study provides answers to questions that have remained unknown for at least 150 years.
A new study by researchers at the University of California, Davis, suggests that non-native milkweeds in urban gardens are not harmful to migratory monarch butterflies. The study found that resident monarchs and non-native milkweeds are not connected to the larger population, allowing urban ecosystems to contribute to their conservation.
The University of Oldenburg has secured funding for three research clusters: Hearing4all, Ocean Floor, and NaviSense. These clusters aim to improve hearing loss prediction, diagnosis, and treatment, as well as animal navigation research. The funding enables the continuation of high-quality research with social relevance.
A new study analyzing over 175 scientific reviews found that agricultural intensification is a major driver of insect decline, but climate change has multiple individual drivers such as extreme precipitation and temperature. The research highlights the need for a multi-pronged approach to conserve insect biodiversity.
The discovery of the Curiously Isolated Hairstreak, a new butterfly species, reveals striking genetic diversity and ecological uniqueness. The isolated population has been separated from its closest relatives for up to 40,000 years, resulting in low genetic diversity and reduced adaptability to changing climatic conditions.
A new study finds that the daily cycles of plant aromas shape the dietary habits and evolution of butterflies and moths. Research suggests that day-active insects have evolved to be picky eaters with larger antennae, while night-active species have more generalized diets due to reduced chemical information.
Research by Kobe University reveals that restoring abandoned grasslands requires at least 75 years of continuous management to regain plant diversity. Pollinators also take time to adapt, with generalist insects like flies and hoverflies dominating recently restored sites.
A new study published in Science tallies butterfly data from over 76,000 surveys across the US, revealing a 22% decline in total butterfly abundance between 2000 and 2020. This alarming rate affects 554 species, with 107 experiencing population losses of more than half.
A comprehensive analysis of butterfly data in the US found that butterfly abundance fell by 22% between 2000 and 2020. The study, led by Eliza Grames at Binghamton University, examined data from over 12.6 million butterflies across the continental US.
A new study suggests that extreme weather events are crucial to understanding phenological responses in plants and insects. The research found that disruptions to the delicate relationships between certain species, such as the yucca plant and yucca moth, can have significant consequences for survival.
A study of Asian hornets found over 1,400 different species in their guts, including a wide range of bees, wasps, and insects. The diet varied strongly over the seasons and between regions, showing that they are highly flexible predators.
A decades-long study reveals that the Schaus' swallowtail butterfly in Florida experiences increased populations following strong hurricanes. The butterflies benefit from the clearing of their host plants, allowing for an abundance of food for caterpillars to grow and thrive after storms.
A study on painted lady butterfly migrations found that environmental conditions, rather than genetic coding, drive their migratory patterns. The research revealed that butterflies can travel vast distances, crossing the Sahara Desert, without showing significant genomic differences between short and long-distance migrants.
Scientists studied painted lady butterflies' migration patterns and found that environmental conditions shape their travel behavior, with some crossing the Sahara Desert. Contrary to previous belief, genetic analysis revealed no difference in DNA sequences between short- and long-trip butterflies.
Researchers document butterfly's complete life cycle, including two distinct pupation phases, influenced by environmental conditions. The species may show phenological plasticity in response to climate change, adapting its breeding timing and brood production.
A study in Warsaw, Poland found no difference in insect-pollinated plant composition or species richness between sown and natural meadows. However, natural meadows had twice the number of butterflies compared to sown meadows.
Researchers have successfully established new sacred fir forests on a nearby volcano to serve as overwintering sites for monarch butterflies, which are projected to disappear from their current habitats due to global warming.
The study found that monarchs are dying off during their fall migration south to Mexico, with roost sizes declining by as much as 80%. Climate change is not believed to be the primary cause, but rather a debilitating parasite and captive breeding may be to blame.
A new species of clearwing moth has been identified from specimens found by a traveler returning from Guyana to the UK. The discovery was made possible through community science efforts involving a young ecologist and a photographer, leading to DNA sequencing and identification as Carmenta brachyclados.
A new study found that well-managed electric rights-of-way can increase the diversity and abundance of pollinating insects, as well as flowering plants. By mimicking natural disturbances like wildfires, utility crews can create successional habitats that support rare plant communities.
Researchers at the Florida Museum of Natural History are studying bagworms' unique life cycle and their potential to inform understanding of modern climate change. They'll also analyze fossils from ancient mammal communities affected by rapid warming, as well as use AI to model future disease outbreaks.
A recent study found that actively managed habitats can slow or reverse population declines in at-risk butterflies. Habitat management, such as prescribed burns and planting nectar plants, appeared to dampen the effect of climate change on butterfly timing.
A new study published in PLOS ONE found that the diversity and abundance of flowers in a garden, rather than its surroundings, have a greater impact on attracting pollinators. The researchers discovered that providing blooms all season long is crucial for promoting local pollinator communities.
Researchers found that moth species with overlapping ranges in the southeastern US have distinct clock genes, including the 'disco' gene. The study reveals how vision evolves when a species switches its pattern of activity, and provides insights into the mechanisms behind species speciation.
Researchers found that butterflies spin unique silk structures, including hook-and-loop fasteners and multi-strand safety tethers, to secure their chrysalises to branches. Despite being thinner and weaker than silkworm silk, these structures provide a stable anchor for the butterfly's transformation.
Researchers found that even tiny city gardens with native milkweed species attracted monarchs and caterpillars. Older, established milkweed plants were more likely to support eggs, while a variety of blooming plants provided nectar for adult monarchs.
A new study found that monarch pupae can survive and produce adults for up to seven weeks in the winter, with a 49.4% success rate in pupal eclosion. The study suggests a potential adaptation to warmer winters and offers an alternative to traditional overwintering methods.
A new study reveals that data on popular community science platforms is biased towards easily identifiable and attractive species. Researchers found that iNaturalist's reliance on photos creates a personal bias, underreporting certain species and overreporting others.
Historical DNA barcodes from over a century old butterfly specimens help classify a group of rare Calinaginae butterflies. The classification sheds new light on the taxonomy of this insect group.
A new legal requirement for developers to demonstrate a biodiversity boost in planning applications may not be effective in improving bird and butterfly populations. Despite this, researchers suggest that the metric can capture plant biodiversity well, but needs improvement to reflect ecosystem intricacies.
A new study found that neonicotinoid-treated seeds led to an 8% drop in butterfly species diversity, with the pesticide also affecting monarch butterfly populations. The research calls for publicly available data on pesticide use to understand the causes of butterfly decline.
Researchers have found a vast number and variety of day-flying insects migrating through the Pass of Bujaruelo in the Pyrenees, with flies making up 90% of the total. The insects begin their journeys further north in Europe and continue south into Spain.
A 2019 study found that high vegetation growth in the Middle East attracted painted lady butterflies, which then migrated across Europe and Africa. Pollen analysis revealed the origins of the migration routes, highlighting the importance of citizen science and monitoring insect migrations.
A study using crowd-sourced data from iNaturalist found that slugs and snails are more common in urban areas than other native species. In contrast, butterflies and moths were the least tolerant of urban environments. The analysis provides valuable insights for city planners to increase urban biodiversity.