Entomological Society of Ontario
@entsocontario
We are the Entomological Society of Ontario - The oldest entomological society in Canada (est 1863). We study the #insects and other arthropods of Ontario. 🐞🐛🪲🐜
🕷️👀 Just your friendly neighbourhood jumping spider! Tiny, curious, and so very cute. Have you met a Salticid? Comment below!
Early bird registration closes soon for our annual AGM! 🦅⏰ Register by August 10th to save some moola 🐄💸 Excited to see you all there 😌
🐝 Not all bees live in hives! Megachile inermis is a solitary bee that helps pollinate wild plants and crops, making it an important part of healthy ecosystems 🌼🌱 If you’ve captured any interesting insect photos, send them our way! We’d love to feature them! 📸🐞
🐞 Got a great bug photo? 📸 The ESO Bug Eye Photo Contest is now open! If you're an Entomological Society of Ontario member living in Ontario, send us up to 3 photos of insects, spiders, or other arthropods for a chance to win prizes and have your photos featured! For more info, see our website!
🐜🐛🐝🐞 ESO Members, it’s time to vote for our new board members and a new potential fellow! 🗳️✨ Voting is open and closes Monday, July 27, 2026 at 11:45 PM ⏰ Want to learn more about the candidates? Check out the V31 Spring Edition ESO Newsletter on our website! 🧑💻
The white-faced meadowhawk is a small but impressive dragonfly found in fields and gardens. These agile predators catch insects in flight and spend part of their life cycle underwater as aquatic larvae 🐲🌿 Photo creds 📸 @jesss_bullock
👀🪲 Meet the Eye-spotted Lady Beetle (Anatis mali)! This giant is one of North America's largest lady beetles—and a fantastic ally in keeping aphids in check! 🍃🐞 Thanks for the submission, Jane! Comment below if you have seen Anatis before~
The University of Guelph Arboretum is offering some exciting workshops in July that you can register for NOW! See their instagram page for more information and click the link in their bio to register! 🌳🌲🦋
Join us for the Entomological Society of Ontario's 163rd Annual General Meeting! The ESO will be taking place from September 15–17, 2026 at University of Guelph Arboretum! 🌲📆 Early-bird registration ends August 10 (registration closes September 1).Visit the link in our Linktree to register! 🔗🐜🐞🐛
Meet the Halloween Pennant! 🎃🕷️ With its striped wings and flag-like perching style, this dragonfly is very eye-catching! Thanks to @clumsy_bugs for these three amazing photos! 📸 #dragonfly #naturephotography #wildlife #ontarionature #insectlovers
🐝The Five-banded Thynnid Wasp (Myzinum quinquecinctum) is a parasitoid wasp that targets scarab beetle larvae living underground 🕳️. Adults can often be found visiting flowers for nectar, while males are known to gather in communal roosts at night 🪻🌷🌻💤🌙. Photo creds to @jesss_bullock 📸
This is a Giant Ichneumon Wasp (Megarhyssa), one of the most fascinating insects found in North America. While its long tail might look like a stinger, it’s actually an ovipositor that helps the female reach wood boring larvae hidden deep inside trees 🐝🌲🌳 📸 @clumsy_bugs
Thank you to everyone who submitted a unique design for this year's sticker contest! Stay tuned for posts with each design featured. Voting access through the Spring Newsletter is live (must be a registered member to vote)! Link below:
June (the month known in the Ojibwe language as Ode'imini-giizis or the Strawberry Moon) is National Indigenous History Month in Canada! Artwork in this post is titled "The Night Shift" by @christi_belcourt featuring the beautiful dibiki-giizis gookowensii (moon moth)🌙
Meet the Eastern Eyed Click Beetle 👀⚡ Comment below if you have seen one! Thank you Carly for your submission.🪲 #Entomology #OntarioInsects #InsectPhotography #EntomologicalSocietyOfOntario #NatureEducation
🦋We have modernized! As Canada's oldest entomological society, we want to keep our history while always progressing. Let us know what you think of the new look below 🦋
🐝🪰Build it and they will come! Thanks to Mia for the submission.🌻 Send us a message with your work relating to Ontario insects to be featured on the page🪰 🐝
Have you seen the Monarch this year? Following their migration is a fun way to learn about their behaviours and identify where key areas of habitat exist. You can promote habitat for the Monarch by fostering milkweed and other native foraging plants at your home!
A spotted lanternfly specimen was recently discovered in St. Catharines. While this insect is not established in Ontario, early detection is critical to protecting local farms, vineyards, and trees. If you think you’ve spotted one, take photos, kill it immediately, and report it to the CFIA 🚨🪰
Today we’re celebrating the World Day for Cultural Diversity 🌎🦋 Science is stronger when people from different backgrounds, cultures, and experiences come together to share ideas and learn from one another. Our differences make our community more vibrant, creative, and connected 🐝🌿
Insect feature of the week! I always see these guys hanging out in golden rod, usually feasting on crab spiders and bees! Let us know if you’ve seen the jagged ambush bug around! 🌼🐝🕷️ Thanks for the awesome photo @jesss_bullock 📸 Feel free to DM us your Ontario insect photos to be featured 💬
Today, we stand against homophobia, transphobia, and biphobia, and celebrate the diversity that strengthens both our communities and the scientific world. The ESO is committed to fostering a welcoming, respectful, and inclusive environment for everyone passionate about entomology 🏳️⚧️🏳️🌈
🐜Fieldwork Friday post from this week!Let us know what fieldwork you’ve been up to!🪲
Insect feature of the week! Have you seen the cecropia moth?🦋
With votes added up from all of our socials, our final match up has come to an end! 🗳️ The winner of the Great Ontario Bug Off and the insect order taking home the Golden Thorax is COLEOPTERA! 🪲👑🌟🏆 Thank you to everyone who voted!
Happy Friday bug lovers! We’ve made it to the final round of the Great Ontario Bug Off! 🪲👑 Are you voting for the winner to be Coleoptera or Lepidoptera? 🦋🐞 Stay tuned to find out who will win the Golden Thorax! 🌟🏆🥇🏅 Comment below to vote up until Monday at noon! ⬇️🗳️
It’s time for the ESO Spring Newsletter! 🌱🐞 We’re looking for content from our community: bug news, research updates, field stories, or any entomological musings you’d like to share. ESO members can submit short articles or notes (up to 750 words), and photos are strongly encouraged.
Ernie keeping things on schedule during the ESO interim board meeting📆🪳
Today on May 5th, we recognize the National Day of Awareness of Missing and Murdered Indigenous Women, Girls, and Two-Spirited People. We honour the lives of Indigenous women, girls, and Two-Spirit people, and acknowledge the ongoing impacts of violence in communities across Canada.
The winner of this round is Coleoptera! Who’s surprised? 🤯🪲 Stay tuned for our last match up THIS FRIDAY! 🗳️