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Posts by Lars Pettersson

The larva of Watsonalla uncinula (Spiny Hook-tip)

The larva of Watsonalla uncinula (Spiny Hook-tip)

For my final day working for @savebutterflies.bsky.social, plus I've not posted an image for while - Watsonalla uncinula (Spiny Hook-tip), ~12mm and I believe in it's 3rd instar (happy to be corrected). Bred ex ova from wild-caught, Oxfordshire female - not by me I should add. #MothsMatter

1 year ago 44 4 5 0
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Four hairstreaks from my European travels in 2024 . False ilex , Spanish purple , Blue spot , and Sloe.

1 year ago 3 1 0 0
Photo of a spiny caterpillar of the Heath Fritillary, Mellicta athalia

Photo of a spiny caterpillar of the Heath Fritillary, Mellicta athalia

Butterfly fact 4. Caterpillars consume 27,000 times their body weight in their brief lives. And then they face an onslaught of predators and parasites. But they can fight back! To understand a butterfly, you need to know its caterpillar. Read all about them in โ€˜Butterflies' from Bloomsbury

1 year ago 31 6 2 1

Really interesting stuff & relevant across countries
๐Ÿฆ‹๐Ÿ›๐Ÿชฒ๐Ÿšœ๐Ÿš›

1 year ago 3 0 1 0

Hehe but that light module in the mug is bespoke ๐Ÿ˜ƒ๐Ÿฆ‹

1 year ago 1 0 0 0
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That festive office feeling
๐ŸŽ‰๐Ÿฅณ๐Ÿฆ‹๐ŸŽ…๐Ÿง‘โ€๐ŸŽ„๐Ÿคถ
@biologylu.bsky.social
@dagfjarilar.bsky.social
#teammoth
#teammothsweden
#mothsmatter

1 year ago 6 0 1 0
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Yay sunny weather after weeks of rain and the #moths are back ๐Ÿฆ‹๐Ÿ›๐ŸŒž๐Ÿฅณ Six Black-spot Chestnut and a Diamond-back Moth in the trap since yesterday #teammoth #teammothsweden #mothsmatter

1 year ago 17 0 0 0
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Here's London: log-transformed abundance on the left, richness on the right. Previous years in red, 2024 in black. Trend lines fitted using GAM (all years and just 2024). Take home message: 2024 was normal for London. Or, every year is a bad year in the Borough of Camden. #TeamMoth 2/4

1 year ago 22 2 1 0

...London is constant effort in 1x20W actinic. Number of traps in Devon varies depending on opportunity, and has increased on average over the years. I was running 3 on some nights this autumn. So London more reliable indicator, but catches always low there. Make of that what you will! #TeamMoth 4/4

1 year ago 18 1 3 0
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And here's Devon: log-transformed abundance on the left, richness on the right. Previous years in green, 2024 in black. Trend lines fitted using GAM (all years and just 2024). Take home message: fewer trap nights, but looks fairly typical. Except for a good few days in autumn, but... #TeamMoth 2/4

1 year ago 17 1 1 0
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Right, the numbers are in. What did my moth trap catch in 2024, and how does it compare with previous years, especially as many moth-ers seemed to be reporting low numbers this year? I mainly trap at two sites (my London flat and in-laws place in Devon), so will focus on those. #TeamMoth 1/4

1 year ago 35 4 3 0
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I've joined Bluesky! Hoping to follow and be followed by many of my X/Twitter friends. Please Retweet/Repost or whatever the word is. #invertebrates #insects #moths #dragonflies #wildlife

1 year ago 316 100 29 14

Not sure about the pre-July 2012 population in Finland. In Sweden, volunteers discovered and reported the butterflies coming across the Baltic sea, reaching Gotland in the SE

1 year ago 3 1 1 0
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This is the colonization process in Sweden, starting July 2012 (followed by 95% leaving in 2014-2015)

1 year ago 1 0 0 0
The circled dots is where the only Swedish populations were found pre-2012

The circled dots is where the only Swedish populations were found pre-2012

The invasion actually happened in July 2012, then the Scarce Tortoiseshell population stayed a couple of years before moving on so for Sweden, that map mixes the pre-2012 population with those that established during the invasion

1 year ago 2 0 0 0
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Brilliant talk by @tokehoye.bsky.social with a shout out to the @insectai.bsky.social COST Action project. Do check it out if you are interested in new tech for insect monitoring! ๐Ÿชฐ๐ŸฆŸ๐Ÿชฒ๐Ÿฆ‹ #BES2024

1 year ago 9 2 1 0
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I love the crazy names given to moths. A favourite is the day-flying moth Mother Shipton. Named after an infamous Yorkshire witch, if you look hard enough at the wing pattern you can make out the profile of an ugly old face. I found this one in the Yorkshire Wolds.
#teammoth #yorkshire #ukwildlife

1 year ago 36 7 1 0
White butterfly with orange and black stripes and short tails on the hindwings.

White butterfly with orange and black stripes and short tails on the hindwings.

The African Map Butterfly is very unique, being the only member of its subfamily in Africa. It is also super cool and breathtakingly beautiful!

Cyrestis camillus camillus, Kakamega Forest, Kenya.

1 year ago 49 4 0 0
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A couple of days with empty #mothtraps the only nice finding recently was this leafhopper (Cicadellidae) bug last Tuesday, possibly a Tremulicerus #mothsmatter #teammoths

1 year ago 12 0 0 0

Couldnโ€™t agree more ๐Ÿ’ฅ It also goes both ways โ€” a welcoming attitude from natural history experts towards having data merged in new ways ought to go hand in hand with big data scientists having a firm natural history-based understanding of data, welcoming involvement by species experts

1 year ago 1 0 0 0

Thanks, that sounds promising! I was thinking CartoDB first but havenโ€™t seen them using rasters and now the free option seems gone too

1 year ago 0 0 0 0

I was thinking of putting it online so that you could use positioning through your phone browser and locate yourself on the raster

1 year ago 0 0 1 0

Amazing pattern! ๐Ÿ˜€๐Ÿฆ‹

1 year ago 4 1 0 0
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Trans-Saharan migratory patterns in Vanessa cardui and evidence for a southward leapfrog migration Chemistry; Nature conservation; Ecology; Entomology

Super stoked to share our latest research on the migratory patterns of painted lady butterflies across the Sahara! ๐Ÿฆ‹๐Ÿœ๏ธ

www.cell.com/iscience/ful...

1 year ago 109 35 3 2
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Dear blueskyers, can anyone following the #qgis #arcview #esri #gis tags help by suggesting a way to put a georeferenced raster with predicted habitat for rare #butterflies online so that it can be used for positioning?
Ping @paulcaplat.bsky.social @martinjung.bsky.social

1 year ago 1 0 1 0
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New butterflies in NL: Mallow Skipper (C alceae, kaasjeskruiddikkopje). Short-time populations in the past, but only well established since 2009. First in SE, but now fastest expansion in SW. Can be easier to find as caterpillar than as inconspicuous adult.

1 year ago 31 3 0 1
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The very earliest butterflies flew with dinosaurs and evolved around 100 million years ago as an offshoot of the Lepidoptera (meaning 'scale wings'). Their DNA history has been revealed in a truly remarkable paper by Akito Kawahara www.pnas.org/doi/10.1073/... (2/2)

1 year ago 54 17 2 3
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Tiny Radar Tags Enable Novel Insights in Fruit Fly Dispersal Using harmonic radar tags weighing less than a milligram, scientists show fruit flies can be closely tracked to reveal flight patterns in real-world environments.

Using harmonic radar tags weighing less than a milligram, scientists have shown fruit flies can be tracked to reveal flight patterns and wind-driven effects in real-world environments. The researchers say the technique can open doors to answer new questions about insects flight behavior.

1 year ago 34 9 1 4
Yellow butterfly with metallic patches of scales surrounded by dark red blotches. Greenish eyes...

Yellow butterfly with metallic patches of scales surrounded by dark red blotches. Greenish eyes...

Here's an exotic Metalmark to help get you though the week...

Anteros formosus, Parque Estadual do Guartelรก, SW of Tibagi, Paranรก, Brazil

1 year ago 91 11 3 0
Flame Carpet, scientific name Xanthorhoe designata.

Flame Carpet, scientific name Xanthorhoe designata.

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The Flame Carpet moth is fairly regular in my moth traps in Cheshire between June and September. One of the easiest Carpet moths to identify with the bold band markings across the centre of the wings.#Moths

1 year ago 159 13 1 0