Summer’s Last Swallowtails

In the final weeks of September, one of the butterflies emerged with damaged wings. She couldn’t fly, so I kept her in the caterpillar habitat and gave her fresh clippings from the butterfly bush every day.

Swallowtail Sept 21

Sometimes I took her out of the enclosure and carried her around the yard, letting her sample marigolds and lantana and salvia.

Swallowtail Sept 27

When she died, a day or two before her two-week birthday, she had undeniably lived longer than she would have lived in the yard. But was it enough?

Swallowtail Sept 21

Was nectar enough, or did my butterfly regret her flightless wings and unfertilized eggs?

What does a butterfly, or a caterpillar, need from life?

Caterpillar Sept 28

Do they yearn for sunshine and plentiful food? Do they crave happiness? Do they grieve?

Caterpillars August 27

There’s a poem hiding in these questions, but it’s so well hidden that I can’t find where it starts. Not today, anyway. Not with a rainy cold front outside and a miserable cough inside.

Caterpillar Sept 21

My last swallowtail caterpillar molted into a chrysalis yesterday. Now I have twenty-five chrysalises ready for winter.

Caterpillar Oct 15

It’s an interesting idea, sleeping through winter. What if I could simply set my alarm for “spring” and call my blankets a chrysalis? On days like today, cough and all, it seems like a good idea. But what about snow? And holidays? Would I be sad, in the spring, that I had missed them? Would you?

Chrysalis Oct 16

A Few Butterfly Answers

I ended yesterday’s post about Black Swallowtail Butterflies with a few questions:

I wonder if there is enough summer left for them? Will they emerge and mate this year? Or will they wait until spring, pausing the cycle as they sleep through winter’s dreary interlude?

Chrysalis August 26

This morning, the yard answered with uncharacteristic directness. There is definitely enough summer left — plenty of time for another generation of swallowtails.

Butterfly August 27

Butterfly August 27

Butterfly August 27

Of all the remaining chrysalises, why should the one I photographed yesterday be the one to open today?

Butterfly August 27

Maybe because I had some time available today, for research? Why else would she allow me to photograph the strange fork at the end of her proboscis? I’ve noticed something similar before, but not on all of the butterflies. What’s going on here?

Butterfly August 27

This afternoon I learned that many species of butterflies emerge with their proboscises incompletely fused. After emerging, they mechanically connect the two halves, forming a tube. This has to be done fairly quickly, or the butterfly may end up with a permanently divided (and therefore non-functional) proboscis. In the above photo (taken only minutes after emergence), the process simply wasn’t complete.

The following enlargement, cropped from one of yesterday’s emergence photos, shows the groove that results when the two halves of the proboscis are properly connected. (The tip of this proboscis had a tiny fork remaining, evidence that the butterfly still had a bit of work to do.)

Butterfly 2 August 26

So much complexity, packed into so small a creature. Wonders and miracles in every detail.

Butterfly August 27

More Swallowtails

Swallowtail August 5

The yard’s swallowtail cycle went into high gear through the early weeks of August. Which meant that, for a while, there were more caterpillars than the predators could eat. (And then the caterpillars ate faster than the parsley and fennel could grow, which meant another trip to the garden store.)

Swallowtail August 5

At one point there were so many caterpillars on the parsley, and so many eggs being laid, that mistakes were made.

Caterpillar and Egg Aug 5

Caterpillar and Egg Aug 5

Since I had a container ready, I decided to collect “a few more” caterpillars. (As it turned out, twenty-two was a few too many, forcing yet another trip to the garden store.)

Caterpillar August 20

I dreamed of waking one day to a container full of butterflies. An unlikely dream, yes, but a lovely one!

Butterfly August 20

(Unlikely because only three of my first thirteen caterpillars survived to become butterflies. Some died of unknown causes, some were destroyed when a predator broke into their enclosure, and three fell victim to what I suspect was a parasitoid.)

Chrysalis Damage Aug 19

I was thrilled when twenty-one of the twenty-two caterpillars survived to become chrysalises.

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And, while the butterflies haven’t emerged in a coordinated swarm, they have begun to emerge. Twelve, so far, of the twenty-one. (Including two this morning.)

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This is a vast improvement over three of thirteen!

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Thrilled with this success, and having a bit of parsley left over, I’m still collecting caterpillars. Last weekend four of the latest group roamed until they were exhausted, then settled into chrysalises.

Caterpillar August 20

I wonder if there is enough summer left for them? Will they emerge and mate this year? Or will they wait until spring, pausing the cycle as they sleep through winter’s dreary interlude?

Chrysalis August 26

Swallowtail Setbacks

Swallowtail July 9

After last summer’s monarch success, I was eager to attract more butterflies to the yard. My sister-in-law frequently sees Black Swallowtail caterpillars on the dill she grows in her garden, so I planted a basket of dill this spring. A bit of online research convinced me to plant fennel and parsley, too.

Swallowtail July 9

Soon there were eggs.

Eggs June 6

Then there were caterpillars.

Eggs June 7

Eggs June 7

Dozens of caterpillars.

Eggs June 7

Dill July 14

Parsley July 14

And then the caterpillars began disappearing.

The yard has many caterpillar predators, but I suspect the house wrens were responsible for most of the swallowtail disappearances. I don’t believe any of summer’s early caterpillars survived, though new eggs constantly dotted the parsley leaves.

Parsley July 6

In late June, the caterpillars molted through four instar stages before the predators found them.

Parsley July 13

Parsley July 13

Parsley July 16

Parsley July 16

Parsley July 16

One evening I counted twenty-one caterpillars on the parsley. The next morning, all but one were gone. I spent half the day arguing with myself, debating the wisdom of interfering with the yard’s processes. (Past experience has taught me that nothing ever goes as planned. Complications arise.)

When the final parsley caterpillar disappeared shortly after noon, I caved. I dug out an old butterfly tent I had purchased on impulse several years ago and moved eleven caterpillars from the fennel and dill into the tent, adding “feed the caterpillars” to my daily routine.

Tent July 21

Tent July 22

They seemed content with the new arrangement, and proceeded to eat every morsel of the remaining parsley, fennel, and dill. When I had nothing left to feed them, I made a return trip to the garden store.

Tent July 20

(At this point, the part of me that had argued against adopting the caterpillars said “I told you so.”)

Tent July 20

Thirty dollars later, the caterpillars were eating again. There were twelve hungry mouths now, because one of the new fennel plants came with a new caterpillar.

Tent July 22

And the new parsley came with a chrysalis hidden deep within its stems, raising my possible butterfly count to thirteen.

Tent July 25

As any fan of The Hobbit knows, thirteen is not a happy number. So I wasn’t surprised when two of my adopted caterpillars died of unknown causes during the following days. But those deaths seemed as if they might be the end of my swallowtail setbacks, because the other ten caterpillars gorged until they were ready for their final molts.

Tent July 21

One-by-one they stopped eating and began roaming, exploring every inch of the tent. I couldn’t tell if they chose certain spots, or if they simply crawled until they were too tired to crawl any more. Whichever was the case, when they finally stopped, they belted themselves in place with a strand of silk and relaxed into waiting poses.

Tent July 24

And then they molted one last time.

Tent July 24

Tent July 24

Tent July 24

Tent July 26

Some of them made brown chrysalises, but most were green.

Tent July 24

Tent July 25

Before my ten caterpillars finished molting, the chrysalis hidden in the parsley opened unexpectedly. When we released the butterfly, it flew away too fast for photos.

Tent July 26

Two days later I woke to find that something had torn a hole in the tent, during the night, and destroyed four of the chrysalises.

Tent July 28

(The part of me that had argued against adopting the caterpillars might have muttered “I told you so” as I surveyed the damage.)

Tent July 28

Still determined to see butterflies, I took the tent apart and fashioned a new, stronger butterfly habitat out of a plastic storage container. Then the six remaining chrysalises began spending their days outside and their nights in the garage.

Box Aug 1

Box Aug 1

Today the first chrysalis opened, and the first butterfly emerged.

Box Aug 2

As I watched her fly away in search of nectar, the part of me that had argued in favor of adopting the caterpillars said, “I told you so.”

Parsley July 28

Next week, after all of my butterflies have flown away, I’ll adopt some of the new caterpillars that have recently hatched on the parsley, and I’ll start all over again.