Johanna Schwartz
@johannaschwrtz.bsky.social
450 followers 850 following 12 posts
Entomology PhD Student @ UIUC - Ohio State/UF Alumna (#ufbugs) - Micro-wasp fan and roach apologist.
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Hi Bluesky! Apparently there's been a massive migration from the other site, so I want to take a second to reintroduce myself. #HiSciSky
I'm Johanna! I'm an entomology PhD student at the University of Illinois at Urbana-Champaign. Currently, my research is on wing evolution in cockroaches!
Reposted by Johanna Schwartz
Arthropod Photo of the Week: October 15, 2025
Tangerine furry-legs moth
Acraga moorei
Lepidoptera: Dalceridae
By Tom Myers, Kentucky, USA
#arthropodPOTW
Close-up image of a bright orange, fuzzy moth with feathery antennae and black eyes perched on the edge of a green leaf. Black background.
Reposted by Johanna Schwartz
Since parasitoids and viruses rarely come up in the same conversation, I shared one of my favorite facts which is bracoviruses are viruses in the genomes of parasitoid wasps that they inject into prey along with their eggs.

Nature is amazing!

en.wikipedia.org/wiki/Bracovi...
Bracovirus - Wikipedia
en.wikipedia.org
Reposted by Johanna Schwartz
A beautiful female Mymar pulchellum parasitoid wasp of the Mymaridae standing over a tiny female Megaphragma noyesi parasitoid wasp of the Trichogrammatidae. They were both found in the old meadow at Great Dixter this morning. Wasps are wondrous!

#UKWildlife #wasps #HighWeald #Trichogrammatidae
A very small orange wasp with long spindly legs and antennae, and remarkable spoon-shaped half-shaded fringed wings on long stalks. Beneath the orange wasp is the tiniest wasp, yellow bodied and black eyed, it has blade-like fringed wings. Both wasps are facing to the right of picture.
Reposted by Johanna Schwartz
please check out this cool game we made!! i hope my fellow entomologists and bug enthusiasts (and maybe even bug haters?) enjoy :>
Reposted by Johanna Schwartz
When fly designers subcontract Jackson Pollock to do the eyes. (Eristalinus sp. hover fly, Victoria, Australia).
A close-in macro photograph of the face of a robust greenish-yellow hover fly standing on a green leaf. The fly's enormous compound eyes are speckled with hundreds of blood-red spots.
My first research experience in a natural history museum was because of Adaina's course! It's great to hear from her this morning! #BiNHMs
Up first, Dr Adania Flemming! #BINHMS
Reposted by Johanna Schwartz
Up first, Dr Adania Flemming! #BINHMS
Reposted by Johanna Schwartz
I work in an exhibit with live spiders, and I think I have lost count how often people misheard "green lynx spider" as "green link spider"...
Two illustrations of a green lynx spider (green spider with two bigger forward facing eyes and lighter colored legs) stacked on top of one another. The one on top is labeled "Green Lynx Spider (Peucetia viridans)", the actual name of the spider. The one below is wearing a green, pointy hat, carrying a blue shield and sword drawn to look like the Hylian shield and Master sword from the "Legend of Zelda", series and is labeled "Green Link Spider (Peucetia hylia)".
Reposted by Johanna Schwartz
Are you a POC student, early career researcher, or professional entomologist from a country in the Global South?

We are now funding memberships!
Apply from October 1st to December 15th.

More info:
www.entopoc.org/apply.html
Apply:
docs.google.com/.../1FAIpQLS...
Reposted by Johanna Schwartz
Dark taxa are extremely diverse organisms that remain largely undescribed due to small size, subtle differences, & few experts.

Take this quiz to find out what you are - I'm a gall midge! whatdarktaxonareyou.static.domains/insect-quiz....

by @vivianfeng.bsky.social & @flyliceresearch.bsky.social
A dark, hairy gall midge fly on a white sheet. It has long legs and antennae and a red neck. Quiz results showing I'm a gall midge or cecidomyiid
Reposted by Johanna Schwartz
Black in Natural History Museums in now open! See it on Floor 3 in the Museum's Gilder Center. Details: bit.ly/3KfbzTS
Reposted by Johanna Schwartz
Just published! A new discovery in biological pest control: Synopeas ruficoxum, a natural enemy of the soybean gall midge in North America. 🧪🧵 doi.org/10.3897/jhr....
A small black platygastrid wasp, around 1.5 mm long, with an elongate metasoma, veinless wings, and a small spine on the mesoscutellum. Lateral view.
Reposted by Johanna Schwartz
A beautiful example of Inostemma, the tiny unicorn of the garden! The long horn on the female metasoma houses its unique ovipositor system. Males don't have horns.
Het is de moeite waard je camera te richten op een 1,5 mm bewegend vlekje op boerenwormkruid. Na vergroting blijkt dat een prachtig wespje (Platygastridae) met een structuur over het borststuk waarin ze de legboor bewaart. #ElkeDagEenInsect (Sorry @parasitoidrex.bsky.social failed to collect it!)
Platygastridae
Reposted by Johanna Schwartz
Our recently opened World of Wasps exhibition hopes to reveal the unseen lives of wasps. Speaking to @cnn.com, Professor Seirian Sumner (@waspwoman.bsky.social) gave her top five reasons why we should all love wasps as much as she does.
Everyone hates wasps. But this scientist wants us to love them. | CNN
If you think wasps only exist to spoil summer picnics, Professor Seirian Sumner is here to set you straight.
edition.cnn.com
Reposted by Johanna Schwartz
I’m always thinking about a deluxe version of DND bugs with more classes, and after a long time of chaos and intense work among shows I’ve finally got some time to finish it! Which one would you choose? 💚🐛🐞🐝🪲
Reposted by Johanna Schwartz
New publication alert! 🎉 I am so proud of this review paper on the history of the systematics of stoneflies, and am so grateful to have collaborated with the best stonefly scientists on Earth! Check it out!! 🪰
academic.oup.com/isd/article/...
Stonefly systematics: past, present, and future
Abstract. Stoneflies (Insecta: Plecoptera) are a widespread group of freshwater insects known for their ecological significance and sensitivity to environm
academic.oup.com