Butterflies

Usually, butterflies are hard to photograph. They are wary creatures, and when you turn the big eye of your camera at them, they take off, flying erratically away.

But this week, I’ve been lucky to get some photos of butterflies I’ve never shot before — in some cases, I’ve never heard of before.

This Weidemeyer’s Admiral has seen better days.

Case in point is the Weidemeyer’s Admirial. I’ve probably seen it before, but never actually identified it. Turns out that Admirals are an entire group of butterflies.

Weidemeyer’s Admiral on rock next to a stream.

Weidemeyer’s Admirals like stream habitats, which is exactly where I found this one. It fits, then, that they eat stream side plants like willows, aspen, serviceberry, chokecherry, and cottonwoods.

Western Tiger Swallowtail

Western Tiger Swallowtails also like streams, but also venture into open grasslands. Their caterpillars eat the leaves of trees and shrubs like cottonwood, birch alder, chokecherry, willows and wild plum. The adults, like many butterflies, drink nectar. https://amylaw.blog/2018/07/18/swallowtail-butterflies/

Common wood-nymph

Common wood-nymphs are butterflies of the open country, where their caterpillars eat grasses. I didn’t know any caterpillars ate grasses! https://amylaw.blog/2018/08/08/butterflies-galore/

I would dearly love to meet an uncommon wood-nymph.

Monarch on milkweed.
Monarch with bee on milkweed.

I posted about Monarch caterpillars a few weeks ago. https://amylaw.blog/2020/06/15/monarch-caterpillers/ We never actually found the chrysalis for the caterpillars, but we may have seen the butterflies themselves. We’ve had a couple of them hanging around our milkweed patch, eating nectar and otherwise getting ready to migrate north.https://amylaw.blog/2018/07/04/monarch-butterfly-migration/

Waved Sphinx moth

Finally, this is a waved sphinx moth that landed on our porch. You know it’s a moth and not a butterfly because the wings are held horizontal, not vertical as butterflies do most of the time. The white dot on it’s wing helps identify it as a waved sphinx. It’s caterpillar eats the leaves of tress, but the adult doesn’t eat at all. It lives to mate, and lay eggs.

Websites I used to gather information about these butterflies and moths include: https://coloradofrontrangebutterflies.com/butterfly-families and https://www.insectidentification.org/insects-by-type-and-region.asp?thisState=Colorado&thisType=Butterfly%20or%20Moth

Swallowtail Butterflies

Several weeks ago, we had orange and black Monarch butterflies migrating through the Front Range. They seem to have moved on.

But we’ve still got big butterflies in the area — yellow and black swallowtails. I’ve seen two different types of swallowtails. The western tiger swallowtail is lives along waterways and in woodlands, as well as suburban areas. It’s caterpillers eat aspen, cottenwoods and green ash. The eastern version of this butterfly …. hmmm…. lives in the east? That’s all I’ve found to separate the two.

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Western tiger swallowtail on Canada thistle.

The other species of swallowtail that I commonly see in the west Denver area is the two-tailed swallowtail. Predictably, it has two tails.  These butterflies lay their eggs on green ash and chokecherry, although the adults evidently like the nectar from our milkweed plants.

Two-tailed swallowtail
Two-tailed swallowtail on milkweed.

It’s a hard life being a butterfly. This poor guy has survived a lot.

Damaged two-tailed swallowtail butterfly on milkweed.

Swallowtails lay their eggs on their preferred plants. The eggs hatch out into caterpillers, which proceed to feed on their host plants. When winter comes, these larva spin a chrysalis (cocoon), in which they overwinter.

Unlike Monarchs (Monarch Butterfly Migration) or Painted Ladies (Painted Ladies migrate across North America! Painted Ladies Part Two), swallowtails only produce one generation a season. The adult swallowtails emerge in May and June, and continue to be active in the same area through August, feeding on plant nectar, as the butterflies above are doing. Sometime in the summer, they lay their eggs.