#swallowtail
Hi - could you help me identify this caterpillar? It was on my lime tree. I’m in Yamaguchi-ken.
Hello!
Thanks for your submission!
You’ve found my all-time favorite bug of Japan and the one on my header image, a Papilio xuthus , Chinese Yellow Swallowtail (called “Ageha” or “Nami-ageha”).
You can see other posts I’ve made about these iconic and beautiful butterflies on my blog here: https://bugsofjapan.tumblr.com/tagged/papilio_xuthus
This particular caterpillar is going to be a pupa within 5-10 days depending on the weather temperature. It’s nearly impossible to tell the sex of a caterpillar, but I had a system I was working on when raising these, judging by the shape of the abdomen when they were fully grown as caterpillars before they became a chrysalis– however yours is not very far into his fifth “instar” (shed skin stage as a larva) judging by the size of his face (large) to his body (kind of small and wrinkly). He will get QUITE a bit bigger, probably as big as your pinky finger before becoming a chrysalis!
The caterpillars of Papilio xuthus can ONLY feed on plants in the citrus family (including Rue), but Japan is chock-full of citrus trees so they are commonly seen in suburban areas. They will eat a LOT of leaves at this stage, but they are a caterpillar for only 5-10 more days before becoming a butterfly, and then going on to be a wonderful pollinator in the neighborhood. Your caterpillar, if he grows up, will live as a butterfly all the way until the first frost when he will freeze and die. However, any of his children that have become a pupa will stay as a pupa over winter, even in freezing temperatures, and emerge in the spring time as the first ‘flight’ of Ageha in April.
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@allbino submitted: Hello fellow insect lover!
I Just moved to a new place in Brisbane, QLD, Australia and have been finding heaps of cute insects in my new garden, all on my lime tree. I’d love if you could help me identify them? Thank you!
This caterpillar that morphs from brown/white (like bird poo ) then to white/green with red retractable horns?
This cute little leaf hopper?
This (actually huge?!) stink bug, largest I’ve seen
And I’ve seen a few of these beautiful iridescent spiders ✨
How exciting to have a garden full of pals you can go admire any time you like! I can certainly help you ID them. The caterpillars are orchard swallowtails, and they prefer citrus trees as their host plant! The “horns” are called osmeteria and they evert them from inside their body defensively. They emit a stinky odor that predators don’t like.
The planthopper is a citrus planthopper, which makes sense. The Large Dude is not a stink bug, but it is related to stink bugs! It’s called a bronze orange bug and once again feeds on citrus. Technically the family they’re in are called the tessaratomids, but colloquially people call them giant shield bugs or giant stink bugs.
And finally the absolutely beautiful spider man is a sea-green northern jumper! Keep your eyes peeled for females nearby as well. They’re more rotund and are a sort of bronzey-purple color.
Thanks for sharing all these great pals, tell them all I love them!