
Warning: this post contains mild non-essential spoilers for This Kingdom Will Not Kill Me and a discussion of insects.

A swarm of glowing golden butterflies flowed out of the entrance, as if the
building had exhaled light and beauty into the night. The butterflies bounced
on the draft, trailing tiny gold sparks, swirled toward me, and melted into the
night air. Like magic.
No, not like. It was magic, not distant like the Mage Tower zapping the lorsses, but right there in front of me. A wonder. It was impossible back home, but here it was real. It existed and it was beautiful.
I caught my breath, swallowed, and walked unsteadily into the Garden of Soft Blossoms.

A man strode to the stage and halted by the red moat. He wore a light gray doublet and dark gray trousers tucked into tall boots. A teal cloak hung off his left shoulder, more of a fashion statement than a protective garment. His back was to me, so I couldn’t see his face, only his curly dark hair, cut short, and the color of his skin, a russet brown.
He pondered the empty stage as if puzzled and waved his hand. A globe of red water shot up from the moat fifteen feet into the air and snapped into a monstrous fish.
Oh!
The creature swam above the stage, circling it. Its long eel-like body kept going and going, long and slightly translucent, the sharp ridged fin along its back bristling with red spikes. It was big enough to swallow a human in one gulp.
Goosebumps crawled up my arms.
The fish’s grotesque jaws snapped, catching its tail. It exploded into a dozen stelkas. They rained onto the center of the stage and dashed into the dining room, darting between the tables. To the side a waiter gripped his tray and jerked it up over his head as a beast shot by his legs. People chuckled.
The stelkas burst into geysers of crimson flower petals. They swirled, flashed with light, and turned into golden butterflies.
Oh wow.
The glowing swarms floated over the dining floor, bouncing on the draft, spreading in all directions. It was too much. Too bright, too colorful, too everything . . .
The nearest group of butterflies changed its course, drifting close to each other instead of fanning out. They were heading right for me.
No time to react. A second, and they swirled around my body, clinging to my cloak. One landed on my shoulder, one tried to wedge itself in my hood, and the third rammed my right cheek . . .
People were looking at me.
I didn’t belong here. I was wearing a cloak that smelled like a corpse. There was river muck in my hair. My bare feet had probably left muddy footprints in the hallway. I couldn’t have been more out of place if I had set myself on fire.
The butterflies exploded in a puff of soft sparks. Something zinged my skin, like a weak rubber band slapping against my face.

“What about gold butterflies?” I asked.
“Ah. You’ve met Ciste. Is he still hanging out at the Garden?”
I nodded.
“His mother sold her body,” she said. “He grew up in a place a lot like the Garden.”
“What happened to it?”
“Nothing good,” she said. “Damaes tolerates his moonlighting, because Ciste is a gifted summoner. Did you see a swarm of glowing butterflies?”
“Yes. He summoned a sea monster and stelkas, too.”
She smiled. “Was it beautiful?”
“Very.”
“Ciste doesn’t summon illusions, only weapons. Everything he conjures is
created for violence.”
Oh.
“Those beautiful golden butterflies feed on your blood. The more magic you have, the richer their feast. A larger swarm can turn a living being into a husk in moments.”
The golden butterflies of Ciste. So lovely, so deadly, and surprisingly rooted in reality.

This is Calyptra thalictri, otherwise known as vampire moth. It is thought that they originated in Asia or Siberian region, and then spread through Russia and Southern Europe. Most of the time, these moths nibble on fruit. They drill into it with a barbed proboscis and drink the juice. They really like raspberries and grapes.
However, during the mating season, the males will use pierce the skin of animals and human and feed on blood instead. They are also known to drink tears.
This happens because of a very interesting adaptation called mud-puddling. Under certain circumstances, some insects use unusual sources to obtain salts and amino acids which they can’t get from their normal diet. Butterflies will often crawl on wet soil after the rain, looking for those nutrients, and some species highly prize human sweat. It contains a lot of salt and sugar.
Calyptra thalictri, however, take it a step further. Once the males acquire the blood, they then pass it to female moths during mating as a kind of wedding gift to provide a boost to future larvae. It is the butterfly equivalent of “Honey, I am craving a hamburger with extra pickles. Could you please pick up one for me? I’m going to eat it with a strawberry yogurt.”
So far the vampire moths are the only species of moths or butterflies known to actually pierce the skin to obtain the blood. Although you can find several scary videos online, these guys are only about 40-45mm in size, so about an inch and a half, and the volume of blood they take is pretty small. A swarm of them is unlikely to turn you into a desiccated husk.
However, they do feed for 10-50 minutes and their bite does hurt. Mosquitoes, which are the predominantly insect blood suckers, have anesthetics in their saliva and only feed for about a minute. On the plus side, moth bites do not transmit bloodborne diseases.
If you would like to know more, there is a video below.
If you are reading this in your inbox, here is a direct link.
And now you know the origin of the magic swarm.



Yay
Every time IA puts a new location or fact in their books—I wonder what weird world they got this from?
Reality. It’s usually based on reality.
I love how the fantasy is rooted in reality/possibility. And honestly, sometimes it’s a bit unnerving to realize, “Oh, that’s real.”
Files this away as interesting things my brain will bring up at night to torture me with 😨 🤣.
I still love the amount of research that IA put into their books.
Wow that is so cool!
Beautiful and terrifying, just like our HA overlords.
I just finished reading TKWNKM. Interesting facts. Art imitates life. 😊
***Whispers*** Can’t wait to read Book 2 of the Maggie Chronicles, especially when Ramond finds out Maggie’s been kidnapped by Silveren.
Thank you! It did not even occur to me, since these creatures were produced by a magician, that there might be an “our world” analog serving as inspiration. So I didn’t even look. My librarian self is torn between shaking her head at me or hanging it in shame. But I thank you also for the reminder that these pretties have some considerable lethality.
Oh I love that these butterflies were based on reality! I feel like this is what sets out Author Lords apart. Even the littlest detail, like golden butter and what they do are so well researched!
top tier cute!
Fascinating, Ilona. Thank you!
I read an article about how news reporters using AI to write their reports would homogenize our language over time due to overuse of the same words. Thank goodness we still have writers who go far afield in language and knowledge still teaching, still stretching our imaginations, and still broadening out horizons.
very cool! I love that y’all love science, and it shows up in your writing. thanks for sharing. and also cool reminder on how much magic Maggie has and why the masked man noticed her..