Pieter Vantieghem
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pietervantieghem.bsky.social
Pieter Vantieghem
@pietervantieghem.bsky.social
670 followers 420 following 330 posts

Belgian #biodiversity enthusiast, main interest in #butterflies & other things with wings

(westpal) butterfly ID help anytime

#refugeeswelcome

Every fraction of a degree is worth fighting for

(he/him)

Videos
Environmental science 40%
Biology 27%
Posts Replies Media Videos

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 3h
I've found brown & black hairstreak eggs yesterday in the #Argonne, in the N of France, near where we are staying for a week. Today I had some time to make pictures of the #brownhairstreak eggs. Can you find hibernating #butterflies near you?

Reposted by Pieter Vantieghem

birdguides.bsky.social
BirdGuides @birdguides.bsky.social · 1d
A new study has revealed that even modest levels of road traffic across Iceland's lowlands can significantly reduce the abundance of breeding birds, including globally important populations of waders:
Small roads, big impacts: breeding birds fall by 20% near Icelandic thoroughfares
New research reveals that low-traffic roads in Iceland reduce breeding bird abundance by up to 20% within 200 m of the road edge, with Whimbrel, Golden Plover, Dunlin and Meadow Pipit being the most-affected species.
bit.ly

Reposted by Pieter Vantieghem

inbo.be
INBO (Research Institute for Nature and Forest) @inbo.be · 2d
Graslanden lijden onder de klimaatverstoring. Meer info in ons rapport ‘Habitats en soorten in een veranderend klimaat’ (p.102 en volgende) bit.ly/3MVwI6P

Reposted by Pieter Vantieghem

thijskuiken.bsky.social
Thijs Kuiken @thijskuiken.bsky.social · 2d
Informatief om de brief plus bijlage te lezen, waarin Jessika Roswall (Europese Commissie) aan Femke Wiersma (Nederlandse regering) uitlegt *waarom* Nederland niet langer meer dierlijke mest mag verspreiden over het land dan andere Europese landen. Een paar citaten. open.overheid.nl/documenten/9...
open.overheid.nl

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 2d
It is a female of the "great mormon" (Papilio agenor). Don't hesitate to upload on a citizen science platform like @inaturalist.bsky.social or @observation.org

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 2d
Niet mijn #vlareg www.demorgen.be/snelnieuws/n...
Natuurverenigingen hekelen ‘nul euro budget voor natuurherstel’ in Vlaamse begroting
Vlaanderen voorziet geen specifieke middelen om de natuur te herstellen. ‘De regering neemt de Europese natuurherstelwet niet serieus’, stelt de Belgische Biodiversiteitscoalitie.
www.demorgen.be

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 4d
Boodschap voor de zelfverklaarde verdedigers van #christelijkewaarden binnen de #begov
joshmcelwee.org Joshua McElwee @joshmcelwee.org · 4d
Pope Leo said in a Christmas Eve sermon that the story of Jesus being born in a stable because there was no room at an inn should remind Christians that refusing to help the poor and strangers today is tantamount to rejecting God himself. For @reuters.com
Pope Leo, on Christmas Eve, says denying help to poor is rejecting God
Pope Leo said in a Christmas Eve sermon on Wednesday that the story of Jesus being born in a stable because there was no room at an inn should remind Christians that refusing to help the poor and stra...
www.reuters.com

Reposted by Efrén O. Pérez, Eric D. Knowles, Ann Bartow , and 5 more

joshmcelwee.org
Joshua McElwee @joshmcelwee.org · 4d
Pope Leo said in a Christmas Eve sermon that the story of Jesus being born in a stable because there was no room at an inn should remind Christians that refusing to help the poor and strangers today is tantamount to rejecting God himself. For @reuters.com
Pope Leo, on Christmas Eve, says denying help to poor is rejecting God
Pope Leo said in a Christmas Eve sermon on Wednesday that the story of Jesus being born in a stable because there was no room at an inn should remind Christians that refusing to help the poor and stra...
www.reuters.com

Reposted by Pieter Vantieghem, Samuele Ramellini

batumiraptorcount.org
Batumi Raptor Count @batumiraptorcount.org · 5d
Recommended read: our 2025 Autumn Report is out!

As part of our tradition and commitment, we’ve compiled a comprehensive overview of the season’s highlights and phenological peculiarities — complemented by many beautiful photos of both birds and people!

👉 batumiraptorcount.org/autumn-report-2025
Short-toed Eagle. Photo by Nikolina Bukovac.

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 5d
Making these kind of large impact conclusions based on limited samples can lead to lots of confusion for the less scientific butterfly lovers & other naturalists. See the Eurema saga where old world Eurema were placed in Terias only to be reinstated 2y later when the group was more thorougly studied

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 5d
Apart from this paper, I'm also not a fan of other papers of the same group where they completely reshape #butterfly nomenclature based almost only on genetic distances while largely ignoring morphology and life history, fe with Nymphalis here pmc.ncbi.nlm.nih.gov/articles/PMC...

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 5d
Well, when you describe 300 species in one paper, I guess the inspiration for an original new name sometimes escapes you... But you could ofcourse always try to choose a name that will less likely lead to confusion...

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 5d
Butterfly nerd post: What do you think about single specimen species descriptions based mainly on genetics with minimal specimen descriptions? Not my cup of tea... centerforsystematicentomology.org/insecta_mund...
Printscreen of the title of the paper: "Descriptions of three hundred new species of Hesperiidae (Lepidoptera: Papilionoidea)"

Reposted by Pieter Vantieghem

filipverbelen.bsky.social
Philippe Verbelen @filipverbelen.bsky.social · 6d
Vlaanderen doet onvoldoende om de Natuurherstelwet te implementeren. De Biodiversiteitscoalitie roept de Vlaamse Regering op tot een ambitieuze koerswijziging om de maatschappelijke en economische meerwaarde van natuurherstel veilig te stellen. www.greenpeace.org/belgium/nl/p...
De klok tikt: Vlaanderen scoort onvoldoende op tussentijdse balans Natuurherstelwet - Greenpeace België
Natuur- en milieuorganisaties van de Biodiversiteitscoalitie roepen de Vlaamse Regering op tot een ambitieuze koerswijziging om de maatschappelijke en economische meerwaarde van natuurherstel veilig t...
www.greenpeace.org

Reposted by Anne Applebaum, Joanna Bryson, Naomi Klein , and 46 more

bubbaprog.xyz
Timothy Burke @bubbaprog.xyz · 6d
The full spiked 60 Minutes CECOT package, clean & subtitled. 1/5

Reposted by Pieter Vantieghem

knnv2ehandsboek.bsky.social
KNNV 2ehands natuurboeken @knnv2ehandsboek.bsky.social · 7d
𝙒𝙞𝙣𝙖𝙘𝙩𝙞𝙚!

Bíjna Kerst.. Om de feestvreugde te vergroten, verloten we dit prachtige paddenstoelenboek!

Zo maak je kans:
- 𝙫𝙤𝙡𝙜 @𝙠𝙣𝙣𝙫𝟮𝙚𝙝𝙖𝙣𝙙𝙨𝙗𝙤𝙚𝙠.𝙗𝙨𝙠𝙮.𝙨𝙤𝙘𝙞𝙖𝙡
- 𝙙𝙚𝙚𝙡 𝙙𝙞𝙩 𝙗𝙚𝙧𝙞𝙘𝙝𝙩

Je helpt ons hiermee dit duurzame doel bij meer mensen onder de aandacht te brengen. Bedankt! #DeKrachtVanBluesky

𝙎𝙪𝙘𝙘𝙚𝙨!

Reposted by Pieter Vantieghem, Tuomas Kankaanpää

richardfoxbc.bsky.social
Richard Fox @richardfoxbc.bsky.social · 7d
More evidence of negative impacts of artificial light at night on moths - activity of Scarce Bordered Straw moths is naturally concentrated in the first 2hrs of night but activity was suppressed under streetlights www.sciencedirect.com:5037/science/arti... #teammoth #lightpollution 🌍
📷 Patrick Clement

Reposted by Pieter Vantieghem

ibartomeus.bsky.social
iBartomeus @ibartomeus.bsky.social · 7d
This gallery of almost all EU bee species high quality photos is quite impressive: pollinatoracademy.eu/images
Pollinator Academy
The Pollinator Academy is a learning platform with integrated taxonomic tools and information on European pollinators.
pollinatoracademy.eu

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 8d
Great species both! Ghana is definetely on my wish list!

Reposted by Pieter Vantieghem

orientbutterflies.bsky.social
orientbutterflies.bsky.social @orientbutterflies.bsky.social · 8d
I have two Pieter. S . Bavius in Macedonia was a thrill and , coincidentally, alongside A . Gruneri. The sheer number and variety at this site was astonishing. But seeing a completely red species in Ghana took some beating. I believe this is C . Mabillei. It was one of many memorable species there.

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 8d
Anthocharis gruneri was the last European species of #orangetip I hadn't seen, so I was very glad to find a few this spring in the very S of the Peloponnese. Check the pale sulphur color of the frontwingbase.

16.iv.2025 Lefktro, Greece

What species of #worldwidebutterflies brightened your year?

pietervantieghem.bsky.social
Pieter Vantieghem @pietervantieghem.bsky.social · 9d
The Royal Assyrian, Terinos terpander

Widespread from the S of Vietnam to Sumatra & Borneo but most common in the Malaysian peninsula and that's where I took this picture.

8.iv.2023 Bukit Fraser, Malaysia

Reposted by Pieter Vantieghem

mondiaalnieuws.bsky.social
MO*Magazine @mondiaalnieuws.bsky.social · 10d
‘Het Europese en Belgische migratiebeleid creëert een juridisch‑bureaucratisch labyrint waarin staten zelf actief onwettig verblijf produceren.’ www.mo.be/opinie/hoe-s...
‘Hoe staten hun eigen verantwoordelijkheid uitwissen’ – MO*
‘Een volwassen migratiepolitiek begint bij het ernstig nemen van praktijken die aantonen dat het anders kan.’
buff.ly

Reposted by Pieter Vantieghem

mondiaalnieuws.bsky.social
MO*Magazine @mondiaalnieuws.bsky.social · 11d
Ahed Bseiso was een vrolijk, verlegen tienermeisje vol plannen. Tot een Israëlische tank samen met haar been haar geloof in de mensheid aan flarden schoot. Vandaag spreekt ze als een vrouw die al vele levens heeft doorworsteld. MO* zocht haar op in Alken. www.mo.be/interview/mi...
‘Mijn oom amputeerde mijn been op de keukentafel zonder verdoving’ – MO*
Ruim 9200 kinderen in Gaza zouden een ledemaat verloren zijn. Een onderschatting, volgens artsen op het terrein.
www.mo.be

Reposted by Pieter Vantieghem

birdsoftheworld.bsky.social
Birds of the World | The Cornell Lab @birdsoftheworld.bsky.social · 11d
Hi! We have 1 wish for Christmas! That in '26 we reach 100,000 followers on @bsky.app Please help us by RTing your endorsement!

Follow us! Birds of the World is a groundbreaking resource where you can find deep ornithological content on birds, stunning multimedia, and range maps for every bird!

Reposted by Tommaso Jucker, Pieter Vantieghem, Tuomas Kankaanpää

rochellemeah.bsky.social
Rochelle Meah @rochellemeah.bsky.social · 11d
Multiple anthropogenic stressors can negatively impact species but can a single stressor also have multiple, concurrent impacts? Here we show that light pollution creates several simultaneous impacts to the nocturnal movement ecology of a moth and a spider: tinyurl.com/5eku5bff (1/5)

Reposted by Pieter Vantieghem

biologyopen.bsky.social
Biology Open @biologyopen.bsky.social · 11d
#WntA is a crucial marker of stripe elements early in development for the Nymphalidae butterfly family. @jasminealqassar.bsky.social & co explore if WntA has maintained its role in stripe elements over 95 million years of evolution in the Hesperiidae family of butterflies. doi.org/10.1242/bio....
Hypotheses of stripe pattern homology between nymphalids and hesperiids. (A) Current summary of the nymphalid ground plan, mainly based on the terminology of Schwanwitsch (Nijhout, 1991; Schwanwitsch, 1924) and including recent updates by Otaki and Mazo-Vargas et al. (Mazo-Vargas et al., 2017; Otaki, 2012; Otaki, 2021; Schwanwitsch, 1956). Discalis elements (D1 and D2); CSS, central symmetry system (cyan); BoSS, border ocelli symmetry system (magenta); Oc, forewing border ocelli; pPf and dPf, proximal and distal parafocal elements; MBS, marginal band system (green). Colored vignettes denote vein intersection landmarks. Magenta square, junction between R and M vein trunks; yellow dot, M1-M2 junction; red star, junction between discal crossvein and M3; blue cross, M3-Cu2 junction; green triangle, Cu1-Cu2 junction. Rectangles feature the name of marker genes. (B) Ventral wing patterns of the nymphalid Prepona eugenes with ground plan annotations proposed by Schwanwitsch, 1956 (left: reproduction of published drawings; right: equivalent annotations as color overlays). (C) Phylogenetic relationship between Papilionoidae families. (D) Ventral wing patterns of the hesperiid P. sidae annotated as in panel A, and highlighting the inferred CSS predicted by Schwanwitsch, 1956 (left panel). According to this author, the CSS marks a grey pattern in forewings, and a dislocated white stripe pattern in hindwings, suggesting uncoupling of pattern and color state in fore/hindwings in skippers. The forewing CSS is markedly dislocated along the Cu1 vein (arrowhead).

Reposted by Pieter Vantieghem

europebutterfly.bsky.social
Butterfly Conservation Europe @europebutterfly.bsky.social · 12d
Our friends at the University of Florence have been looking into the aesthetic appeal of European butterflies and does this bias the species we choose to protect. You can help their research by completing a simple online survey. Many thanks in advance www.unveiling.eu?fbclid=IwZXh...
Unveiling - Home
www.unveiling.eu

Reposted by Elena Litchman, Pieter Vantieghem

globalmuseum.bsky.social
Global Museum @globalmuseum.bsky.social · 12d
Scientists Discover Nine New Species Overlooked in #Museum Drawers. Nine new #butterfly species have been discovered hiding in 'plain sight' among the some 80,000 drawers that make up the #lepidoptera collection of the Natural History Museum, London
www.newsweek.com/scientists-d... #globalmuseum

Reposted by Pieter Vantieghem

inbo.be
INBO (Research Institute for Nature and Forest) @inbo.be · 12d
INBO'er in de kijker: Dirk Maes.
📋 Dirk maakt deel uit van ons team Soortendiversiteit en focust zich op het opstellen van Rode Lijsten en het onderzoek naar insecten, voornamelijk vlinders 🦋.
❓Wil je meer weten over het onderzoek van Dirk? Ga dan naar: pureportal.inbo.be/nl/persons/d...