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Damsels and Dragons

Posted by Christina Doherty at Aug 20, 2009 12:00 AM |
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Spending a day at Mac's Pond...

Damsels and Dragons

Green Darner Dragonfly

Sounds like a title for a fantasy fiction novel, but the plotline is playing itself out right here on our little island.

Summertime is a time for winged things.  If you’re a bird enthusiast, you may have been spending time admiring the assortment of feathered friends at your feeder, soaring the skies above, or wading in the shorelines.  Spending time at Mac’s Pond on IslandWood’s campus, I have been seeing the transparent wings of a different sort. 

Dragonflies are those elongated, zippy, airplane-looking insects you see flying above and around ponds, lakes or pools.  They are most often found near these wetlands, because that’s where the larvae grew up - and they are munching on some serious insect chow as adults. 

Dragonfly myths debunked!

-Dragonflies live only for one day.

Nope.  Their lifespan can be anywhere from 6 months to 5 years!

-Dragonflies can sew up your lips with a stinger! (What?!)Green Darner mating wheel

This of course is not true, as dragonflies have no stinger and sew even more infrequently than I do.  This is why the Green Darner dragonfly has its name by the way.  Darning is sewing.  I learned that from reading old books.

What is thought of as a “stinger,” is actually called a clasper.  It’s a projection at the end of the dragonfly’s abdomen which holds the male and female together in their fancy wheely mating trick.  You’ll know it if you see it - two dragonflies attached together at the rump are doing exactly what it looks like.

 

Boreal Bluet DamselflyAt Mac’s Pond I keep seeing this dragonfly-esque insect that looks like an electric blue toothpick.  This is called a damselfly, aka, bluets.  Check out how this resting damselfly holds its wings together in line with its stick-like body.  This is your major fieldmark behavior. 

Bottom line:

Dragonflies and Damselflies are cousins.

Wings out like an airplane when resting = dragonfly.

Wings together in line with body when resting = damselfly.

Where can I find my own damsels and dragons?

Look for them wherever fantasy creatures are sold.  Ah, just kidding.  Any wetland will do- pond, marsh, etc...

 

 For more on pond life, and other critters join us for a Seasonal Discovery Hike, part of our EnviroExplorations series.  For details go to www.islandwood.org/events

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speaking of spiders...

Avatar Posted by David Hunting at Sep 22, 2009 02:14 PM
Hey Christina, What's with the huge hatch of insects this time of year? Fruit flies, termites, mosquito wasps, moths, spiders and spider webs all over the place. How come?

speaking of spiders...

Avatar Posted by Christina Doherty at Sep 23, 2009 01:59 PM
Fall sure is a creepy crawly time, isn't it? The short answer is that you are observing the output from a spring and summer season of egg laying and hatching! Late summer and early fall always seems to be the time when those insect, bug or arachnid kids are off to school.
Mosquitoes should be starting to dwindle some, because the majority of those "I need a protein shake...NOW!" pregnant mosquito cravings are over. They've laid their eggs after their summer feast on mammalian blood and the babies have gone through complete metamorphosis.

In the case of caterpillars, you are definitely going to start noticing more of them as they bulk up on plant material and head off to find a dandy spot to overwinter. Feel free to save them from their suicidal road-crossing forays, but do point them in the direction they were going!

Wasps, in my opinion are just cranky at this time of year. Only the mated queens will survive the winter. So I think those poor male buzzers are just in a foul mood. Yellowjackets, wasps, hornets and the like will still ravage your fall picnics searching for meat and sweets until their time's up...

Spiders have gone through a major population explosion and are bulking up in the fall season. You will probably get "webbed" in the face more than once while walking outdoors during this time. Remember also that the cool night air and warm mornings are creating condensation on webs which will give them a more noticeable appearance, as the dew will cling to the silken strands.

Good hunting, Hunting. Let me know what else you find out there!



House spiders?

Avatar Posted by Cliff Quinn at Oct 05, 2009 05:28 PM
So why do there seem to be more *big* spiders coming into the house this time of year? Those honkers that sit in the sink and stare up at you daring you to turn on the water...

sink spiders

Avatar Posted by Christina Doherty at Oct 20, 2009 04:49 PM
A lot of people start noticing spiders in their homes in fall. Most house spiders are perfectly harmless, but some do come in a variety of shapes, colors and locations!

Without something to compare it to at the time, any spider could seem "big" especially if it's in the wrong place. Sitting against the white porcelain of a sink, tub or shower, it would make it appear even moreso. You find spiders in kitchens and bathrooms primarily because they are looking for water.

There are a few truly larger species that you could potentially find in your home. One is the Giant House Spider, aka American House Spider. It's harmless (unless you are a fly, but flies are not good at using the internet, so that rules that out). With its legs extended, it can reach an inch or more across. Contrary to do-gooding belief, it's best NOT to free a house spider outdoors. Its little spidey body is not adapted to temp. and moisture fluctuations. If it's between set it outside or squash it with your shoe, then by all means, put the little feller outdoors. If you can tolerate the presence of a house spider or even several house spiders lurking about, then rest assured they will do more good to you than harm. They are not aggressive and will eat all sorts of insect pests (silverfish, mosquitoes, etc) if you leave them as your personal Green Exterminators.

The only worrisome spiders that people encounter (albeit rarely) in homes are Hobo spiders, Brown Recluses and Black Widows. If you find one of those in your sink having a staring contest with you, take a picture of it, and then SET IT OUTSIDE.

Spiders are good. Most are harmless. Unless you're a bug. The End.






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