Contents tagged with insects
Created: 7/22/2013 Updated: 8/9/2016
It’s Time to Get Your Bug On!
Summer has finally arrived in Chicago with it the endless array of festivals. Not to be outdone, the Nature Museum will once again be celebrating all things invertebrate with its fifth annual Bugapalooza event. So if boiling your brains out with music in Grant Park with several thousand others is not your idea of a fun time (or even if it is, you can do both) why not head over to the museum on August 2nd and delve into the delights of entomology?
We will have a great selection of bugs on display in our highly popular Bug Zoo with experts on hand to give you all the fascinating facts about these often overlooked creatures. You'll get the chance to learn about bug diets when we do our Bug Feeding Program and we'll also be doing Bug Walks on the museum grounds to show you the vast array of species that call our prairie landscape home.
Along with Bug Crafts, Bug Coloring and Bug Tattoos we will also be throwing down the gauntlet to see how adventurous you are feeling by offering you some tasty dishes to try where the key ingredient is, you guessed it, BUGS!!
Our collections staff will be on hand demonstrating the delicate art of insect pinning and we will have our neighborhood apiarist here to explain the skills of bee keeping whilst our younger visitors can learn how bees dance. You will even get the chance to see our Leaf-cutter Ant Colony up close too.
Of course no celebration of the invertebrate world would be complete without a special ‘after hours’ opportunity to visit our iconic Butterfly Haven and to cap off the evening we will be doing a First Flight Butterfly Release. To register for this great event, simply click on this link.
Created: 4/23/2013 Updated: 8/10/2016
When most people think of insect migration, they quite understandably think of the Monarch butterfly. It comes as a surprise to many that some species of dragonflies also migrate. In this part of the world, many of the larger and more familiar species, like Green Darners and Black Saddlebags, are among the migrants.
Swarm of migrating Green Darner (Anax junius) dragonflies outside of the Nature Museum
Migrating swarms of dragonflies have been observed in places like the shores of Lake Michigan, the Gulf Coast of Texas, and along the east coast of Mexico in places like Veracruz. Migrating swarms are sometimes observed near migrating flocks of raptors, and there is some evidence that they provide a significant nutritional resource for migrating hawks.
A saddlebags dragonfly (Tramea sp.) in Veracruz. This is one of the species that migrates.
In contrast to the Monarch migration, there still isn't much known about the dragonfly migration. Details of the timing and the ultimate destination are still unknown. Are the individuals that head south the same ones that return north?
The Cansaburro Dunes in Veracruz. Researchers are trying to determine how the Gulf Coast of Mexico figures in dragonfly migration.
In an attempt to learn more about dragonfly migration, the US Forest Service's Wings Across the Americas program has assembled a group of dragonfly experts, nongovernmental organizations, academic institutions, and federal agencies and formed the Migratory Dragonfly Partnership (MDP). The partnership includes representatives from Mexico, the United States, and Canada. Members of the partnership, including representatives from the Nature Museum, have traveled to Veracruz to observe migrating dragonflies. The partnership meets annually to discuss how best to learn more about dragonfly migration.
You can find out more about ways to help scientists learn more about dragonfly migration by visiting the Migratory Dragonfly Partnership web site.View Comments
Created: 2/20/2013 Updated: 8/10/2016
Internationally known artist Jennifer Angus was at the Nature Museum in November to install her exquisite artwork in the south gallery of our second floor. It took three days and several pairs of hands to cover the gallery with insects from Malaysia, Thailand, French Guiana, and Papua New Guinea. I was able to help along with Jennifer’s assistant, a few other staff and a dedicated volunteer. It was neat to see the project unfold before my eyes. My favorite part was hearing the “oohs” and “ahs” as the elevator doors opened and visitors caught their first glimpse of the space.
Prior to her arrival, Jennifer had sent us the specifications for her design. The walls were painted a cool aqua color with yellow polka dots. In order to create the vertical lines in the pattern, she started by setting up a thread grid along the walls.
Using a hammer and special insect pins, we delicately placed each insect along the grid in an alternating pattern. Some insects needed an extra bracing pin to stay in position.
Jennifer’s artwork resulted in a whimsical design of flower-like shapes that draw the eye up and down.
You can learn more about the artist and her intent by visiting the gallery. We are delighted to have this unique installation at the Nature Museum, and we hope you get a chance to see it soon!
Created: 1/15/2013 Updated: 8/10/2016
I'll be honest with you, folks. There's just no way I can keep every greenhouse pest out of the Judy Istock Butterfly Haven. And you want to know something else? I don't particularly intend to.
Now I'm not rolling out the red carpet for aphids here. At least not compared to the hero's welcome they get just by us stocking the Haven with all their favorite foods and a perfect breeding climate. If they were easy to keep out, they wouldn’t be called pests. Aphids, whiteflies, mealybugs, and scale insects can lay waste to thousands of dollars' worth of plants in no time, and then all we'd have is hungry butterflies and some sticks covered in bug poo.
I could run around in the off-hours spraying chemicals. I don't because 1. Toddlers (et al) will put anything, including leaves coated in poison, directly into their mouths and 2. Butterflies, being insects, react unfavorably to insecticides. Also, I'd have to get here even earlier in the morning.
But more important than my alarm clock is the fact that we, as an institution, have adopted Integrated Pest Management (IPM) as our strategy for all pests. One part of IPM means using the least harmful means of control first. That would be prevention most of the time. I check plants for infestations before I plant them in the Haven. I monitor the plants already there to catch outbreaks at early levels, and then a little soapy water works miracles. But the true secret, the one that has me smugly unconcerned while hordes of mealybugs roam the streets, is that every now and then I release MORE bugs into the Haven.
We order the workhorses of the Butterfly Haven from Beneficial Insectary in Redding, CA. Ladybugs (Hippodamia convergens) devour most soft-bodied plant pests, and do so as adults and as larvae. This is also true for the similar-looking Cryptolaemus montrouzieri, which goes by the more pronounceable and colorful common name ‘mealybug destroyer.’ I also release three wasps into the Butterfly Haven--all of them completely harmless to humans. In fact, they are all smaller than the stinger of the wasps commonly associated with fear and pain. Being so small I guess they are not worthy of cool common names, but they answer to Aphidius colemani, Aphytis melinus, and Encarsia formosa and they parasitize aphids, scale, and whiteflies respectively. Parasitic wasps lay their eggs inside living hosts, sometimes paralyzing them first, and let their newly-hatched young eat their way out. Some people think that's gruesome, some think it's awesome, some think it's both.
Our workhorse, the Ladybug
Notice how I mention these helpers as adults and as larvae. If I were somehow, magically, able to remove every single 'bad bug' from the Haven, my beneficial buddies would have no food, and therefore couldn't breed and maintain a population. One aphid or scale (both of which can reproduce asexually, which is far creepier to me than the parasitic wasp thing) could turn into millions nearly overnight. Instead we aim to keep the pests at an ‘acceptable’ level, which is another tenet of IPM. Then our beneficial insects have more likelihood of breeding and remaining in the Haven to greet incoming pests with something a little less like paradise.
To them, that is. All this goes on at the smallest limits of human perception. At scales more in line with our everyday experience, the Haven remains the tranquil sanctuary we have come to expect. There might be an aphid or two in there, but don't worry. I'm hardly working on it.
Andrew WunschelView Comments