The entire process of a caterpillar - Polydamas swallowtail - turning into a butterfly is driven by hormonal changes.
© Ujang Achmad/EyeEm/Getty

seen from United States
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seen from United States

seen from United States

seen from United States
seen from United States
seen from United States
seen from China
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seen from United States

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seen from Canada
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The entire process of a caterpillar - Polydamas swallowtail - turning into a butterfly is driven by hormonal changes.
© Ujang Achmad/EyeEm/Getty
Polydamas Swallowtail Butterfly - Battus polydamas
Though lovely this dark-winged Butterfly is, I'd have loved to see the dorsal side of its wings. Nevertheless, I won't complain too much given these pictures come from a long way from home and from a dear friend who has given us a glimpse to some tropical insects. This dazzling specie features pronounced veins and prominent red markings along the edge of the underside of the hindwing. The forewing features a yellow band that rides along the wing (but not to the edge) both above and below. It's similar to the band of the male Eastern Black Swallowtail but positioned lower on the wing and less steep in shape. The band appears somewhat faded on the underwing, hence why I would have liked to see the dorsal side. The Butterfly's body itself can be easily recognized from the coat of orange-red dots it wears and a similarly colored stripe running along the abdomen (which is partially visible in Pictures 1 and 4). With all these observations in mind, similar to the aforementioned Eastern Black Swallowtail, this specie may be mistaken at a passing glance with the Pipevine Swallowtail (a close relative: Battus philenor). Red spots or white spots, only a landing will tell, as the Pipevine has a royal blue shroud atop its wing scales (if male). Based on location, this individual is likely of the western group (subspecie B. polydamas polydamas), but there are many subspecies in the Central America range so I can't be sure.
It truly is a beautiful insect, and it maintains those stunning colors all throughout its entire development from Caterpillar to Butterfly. From the images I've research Polydamas Caterpillars are plump and dark (dark brown to black range) with a coat of orange spikes along their body and two long protrusions near their head. Such an appearance not only looks fearsome, but can also lead them to be mistaken for B. philenor Caterpillars. From the images I've looked at for comparison, the Polydamas Caterpillars are far more elaborate in appearance. However, when metamorphosed into Butterfly, there is one thing that is sure not to be missed on this specie...or missed, actually as the case may be. Contrary to some of its more popular relatives, this insect is also known as the Tailless Swallowtail! Unlike the handful of Swallowtails* that have graced this blog, there is a complete absence of hindwing tail, and appears to be the only specie in North America to feature tail absence. While these tails are beautiful to observe, it was enlightening to learn just how large the Papilionidae family was and how many Swallowtails actually lack tails. For example, the Palawan Birdwing (Trogonoptera trojana) is a Swallowtail (Birdwing), and though magnificent in size and iridescence, it too lacks tails. That's just the way the wings form within some branches of Lepidoptera.
*Note: As a Swallowtail, you can actually see all 6 legs active and strong, compared to the 4 active legs of the previous two tropical Brush-Footed Butterflies.
Pictures were taken on February 11, 2024 in Mexico with a Samsung Galaxy S23 Ultra.
this cutie was born the other day!!! 🤠♥️
went to check on Yoda and found him to be much bigger than a couple of days ago... might be about ready to transform into a swallowtail butterfly...
also there are A LOT of babies now so i am excited to watch them all growing.
bonus pics of some other stuff in my yard... big thrills
POLYDAMAS SWALLOWTAIL BUTTERFLY
eeeeeeeeeeeee!!!!!!
pretty!!!!!!!!!!
Battus polydamas, the Polydamas swallowtail Oak Village of the Trails in Volusia county, Florida 15 October 2014, Nikon D7100
It seems that I spend more time photographing moths than I do butterflies. Whereas I’ve represented about 28 different species of moths so far on phosTracks, our total butterfly species count at this time is three — and that’s including this one, the Polydamas swallowtail (Battus polydamas). Heh. Truth is, the moths come out at night when I tend to have more free time, and they have a habit of coming to me — bunkering down on my house and on my back patio. Butterflies, on the other hand, are more active by day, and they can sometimes be rather difficult to get close to — at least in contrast to the moths.
This Polydamas swallowtail was certainly an exception. I found it clinging to one one of window screens well after dark. Though active and alert, the butterfly was also quite agreeable — even letting me open its wings so I could get the haphazard dorsal shot you see below.
In the Butterfly world, I truly do adore the swallowtails (Family Papilionidae). I’ve seen and photographed a decent number of swallowtails from Alaska to Florida. Their body forms are mostly consistent, but swallowtails feature a brilliant array of colors and patterns. This particular species is considered tropical and, in the United States at least, is mostly limited to the Floridian peninsula, though it does sometimes stray elsewhere in the continental United States and is reportedly present in Texas. The Polydamas swallowtail, sometimes also commonly known as the Golden rim swallowtail, also ranges throughout significant swaths of Central and South America. Fortunately, I don’t have to travel quite that far to find this brilliantly patterned species. On more than a few occasions, they come right to me!
The Polydamas Swallowtail (Battus polydamas), 15 October 2014 Battus polydamas, the Polydamas swallowtail Oak Village of the Trails in Volusia county, Florida…
Battus polydamas larvae feeding on Aristolochia in Florida. These guys were EVERYWHERE at butterfly world when I went years ago. I bought a pipevine to bring home with me and it had a few hitch-hikers. They all pupated and emerged before I left FL but the larvae were AMAZING. The adults are cool too.