Tag Archives: monarch

Monarch Butterfly Caterpillar © Sean Horton

Take 5: Caterpillar Craze

What on earth are caterpillars, anyway?

“Caterpillar” is a common name for the “larval” (immature) stage of insects of the order Lepidoptera, a.k.a. butterflies and moths.

Finding caterpillars in nature is not easy! The easiest way is to look on their preferred host plants. Monarch butterfly caterpillars, for example, prefer to eat milkweed plants, so that’s where you’re most likely to find them hanging out.

If you love butterflies and caterpillars, you’re in luck! The 10th Annual Butterfly Festival at Broad Meadow Brook in Worcester is this Saturday, August 12. There will be activities for kids including face painting, an obstacle course, a story tent, and nature-themed arts and crafts, as well as a Caterpillar Lab with caterpillar expert Sam Jaffe.

To celebrate these cute, crawly creatures, here are five caterpillar images from our Picture This: Your Great Outdoors Photo Contest. The 2017 photo contest is open now, so enter today!

Isabella Tiger Moth Caterpillar (a.k.a. "Wooly Bear") © Callie Bucchino

Isabella Tiger Moth Caterpillar (a.k.a. “Wooly Bear”) © Callie Bucchino—Wooly Bears are unique for being commonly identified by their larval stage rather than their adult stage.

Spicebush Swallowtail Caterpillar © Brendan Cramphorn

Spicebush Swallowtail Caterpillar © Brendan Cramphorn

Brown-hooded Owlet (Cucullia convexipennis) © Ron Verville

Brown-hooded Owlet (Cucullia convexipennis) © Ron Verville

Polyphemus Moth Caterpillar © Ingrid Moncada

Polyphemus Moth Caterpillar © Ingrid Moncada

Monarch Butterfly Caterpillar © Sean Horton

Monarch Butterfly Caterpillar © Sean Horton

Monitoring the Monarch Situation

A Quick Guide to MonarchsThe Case of the Missing Monarchs, which we reported on last summer, continues. For the second year in a row, observers are noting very few of these beloved bright orange fixtures of summer.

Their absence brings up a lot of questions, many of which cannot yet be answered conclusively. What we do know:

  • Monarch wintering habitat in the mountain forests of central Mexico has been greatly depleted in recent decades.
  • Because monarchs travel over such a wide area, they’re vulnerable to environmental change all along their route.

Stay Informed

There are many great resources closely monitoring the monarch situation including:

  • The Monarch Joint Venture, a partnership of federal and state agencies, non-governmental agencies, and academic programs.
  • The Xerces Society a nonprofit organization that protects wildlife through the conservation of invertebrates and their habitat.
  • And, locally, the Massachusetts Butterfly Club, a chapter of the North American Butterfly Association.

Spread the Word

The more people that know about the monarch’s plight the better. Share our Quick Guide to Monarchs, which explains how to identify a monarch (versus its lookalike, the viceroy) as well as other useful information.

Don’t Weed the Milkweed!

If a gardening catalog offered a plant that sported unique flowers, attracted butterflies, fed and protected the beloved monarch butterfly, provided nesting material for goldfinches and orioles, was easy to grow, and was native to our state, wouldn’t we be eager to plant some in our gardens?

So, what is this magical plant? Milkweed! There are over 70 species of milkweed native to the United States. In Massachusetts, species you may see include: common milkweed, swamp milkweed, butterflyweed, whorled milkweed, and poke milkweed. Each looks different and each blooms at different times depending on the species and location.

Common milkweed is probably our most recognizable milkweed. Found in fields, meadows, disturbed areas, and roadsides, its large, thick leaves exude a milky substance when broken; its pink blossoms attract a frenzy of insect activity in early summer; and its distinctive seed pods release a hundred or more seeds flying on silky parachutes in late summer and early fall.

But don’t let the “weed” part fool you. This plant is a treasure not to be plucked. Here are a few reasons why:

  • Milkweed provides plentiful nectar to honey bees, bumble bees, wasps, butterflies, moths, and other native pollinators. Milkweed depends on insects for pollination and in return the insects receive easy nectar from milkweed’s many small flowers growing in large clusters.
  • Monarch butterflies depend on milkweed for their survival. Monarch caterpillars only feed on milkweed and the toxins in the plant make the caterpillar and adult unpalatable and poisonous to vertebrate predators. The monarch’s bright orange color acts like a warning sign to predators: Eat me and you’ll get sick!
  • Milkweed provides habitat for tiny aphids “herded” for their honeydew by ants; milkweed bugs who feed exclusively on milkweed seeds; crab spiders who assume the color of the milkweed flower and jump out at unsuspecting butterflies; and many more bizarre and wonderful creatures.
  • Milkweed has an interesting history. In the genus Asclepias, milkweed is named after the Greek god of medicine (Asklepios) and the plant has been used medicinally for ailments ranging from asthma to tapeworm. (Not recommended!) Early settlers and pioneers used milkweed’s seed silk as stuffing for pillows and mattresses and ate every part of the plant after boiling in several changes of water to dispel the bitter toxins. (Again, not recommended!)

So, please, don’t weed the milkweed! Instead plant it, grow it, nurture it, and acquaint yourself with a patch near you.

To learn more about milkweed, visit a Mass Audubon wildlife sanctuary near you or come to the Annual Barbara J. Walker Butterfly Festival at Broad Meadow Brook in August to purchase milkweed, plant milkweed seeds, and learn more about butterfly gardening.

Photo of a monarch on common milkweed via U.S. Fish and Wildlife Service