Entomology curator @NMIreland & Invertebrate ecologist interested in all aspects of Irish biodiversity. 🐌🐞🦟🐚🦋 Personal account.

Dublin, Ireland
Joined November 2016
Aidan O'Hanlon retweeted
Micheál Martin has finally met his toughest opponent on the triple lock: Micheál Martin. Well, he did invite us to go back over his record
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Ever wondered what sampling methods are best to catch saproxylic (and other wood-inhabiting) beetles? Check out this paper just published. Senior author was the wonderful Aoife Crowe. The paper is behind a paywall. If you would like a copy DM me. doi.org/10.1007/s10841-026-0…
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Shifting Baseline Syndrom. Eins der großen Probleme in der Wahrnehmung des Artensterbens. Kurz gesagt: Das was wir als Heranwachsender kennen, wird als der Normalzustand empfunden. Damit verschiebt sich aber die Baseline von Generation zu Generation, und viel Information geht verloren… der tatsächliche Verlust an Vielfalt ist viel dramatischer als wir ihn wahrnehmen.
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This insect is a female Giant Ichneumon Wasp, specifically the species Megarhyssa atrata (also known as the Black Giant Ichneumon Wasp).
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Aidan O'Hanlon retweeted
The Conehead Praying Mantis probably the craziest insect you have seen all day! | photo by Marta Albareda
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Aidan O'Hanlon retweeted
Vipers, butterflies & parrots: the secret life of Roger Casement. Best known for his role in Ireland's fight for freedom, Casement's fascinating zoological legacy can be found in many Irish museums. By @MusingMollusc @NMIreland & Angus Mitchell RIA rte.ie/brainstorm/2026/0424/…
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Aidan O'Hanlon retweeted
Sweet spotted ladybug catching the light, nature’s little lucky charm.
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Aidan O'Hanlon retweeted
For the third year in a row, a cuckoo has landed in Killarney National Park after flying over 9,000 kilometres from Ghana. Cuach Cores had not been heard of since last Autumn after he’d successfully crossed the Sahara. jrnl.ie/7019857
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Aidan O'Hanlon retweeted
What a stroke of luck. Right time right place! 📸 arunkumar6974
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: A touch of pink, a shimmer of blue, and a whole lot of nature’s magic. 🦋✨
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Aidan O'Hanlon retweeted
トワダオオカ Toxorhynchites towadensis (Matsumura, 1916) 日本最大種。 吸血はせず、この個体も樹液を吸汁。 胸部が金属光沢を帯び美しい。 長崎県RLで絶滅危惧ⅠB類。 対馬では市街地周辺でも見ることができる。 23.Ⅵ.2015 対馬市厳原町 #対馬の昆虫
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Arthropod Photo of the Week: April 15, 2026 Millipede Oxidus gracilis Polydesmida: Paradoxosomatidae Observed in Fort Mountain State Park, Georgia USA By Steve Long (buff.ly/E7Fg4wO), Florida, USA #arthropodPOTW
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This is the Eight Circled Cross page from the Book of Kells. The level of detail is absolutely insane; I made a replica of this a couple of years ago, and even scaling it up to twice the size, there were still sections I had to simplify because the detail was just too fine.
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Aidan O'Hanlon retweeted
Rare Greenland Shark washed up at Finisklin, Sligo.
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Aidan O'Hanlon retweeted
Snipe news! 1/4 Two Snipe tagged in Iceland by José Alves left Ireland at dusk on 5 April and reached Iceland 17 hours later. See map. Averaging 80 and 87 km/h #ornithology
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Aidan O'Hanlon retweeted
I just found out about this creature called Chilean Harvestman. Top tier creature design, I've got to say.
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Aidan O'Hanlon retweeted
Uganda🇺🇬
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Aidan O'Hanlon retweeted
BREAKING: Artemis II crew captures new photo of Earth.
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Arthropod Photo of the Week: April 1, 2026 Sweat bee Halictus ligatus Hymenoptera: Halictidae Observed in North Carolina, USA By Rey Acevedo (buff.ly/SAMX5Lp), North Carolina, USA #arthropodPOTW
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