Photo of the Week – June 12, 2014

While I was in Iowa last week, I took advantage of some free time just before sunset to return to one of the restored (reconstructed) prairies we’d visited earlier in the day at the Kellerton Wildlife Management Area.  As I walked into the prairie, I could hear a few straggler (desperate?) prairie chickens booming on their lek and I flushed a pair of northern bobwhites from the fenceline.  Bobolinks, dickcissels, eastern meadowlarks and grasshopper sparrows were noisily announcing themselves across the prairie, and upland sandpipers were whistling and chattering above.  The insects were less noisy but were abundant, once I started looking closely for them.

Tall white indigo in restored prairie at the Iowa Department of Natural Resources' Kellerton Wildlife Management Area.

Tall white indigo in restored prairie at the Iowa Department of Natural Resources’ Kellerton Wildlife Management Area.

As the sun lowered itself toward the horizon, I reflected upon the various ways the success of this particular prairie restoration effort could be measured.  It was certainly aesthetically pleasing, plant diversity was high, wildlife and insects certainly seemed to be responding well to it, and by replacing cropland with prairie, the Iowa DNR had – at least incrementally – defragmented the grassland landscape.  Seems like success to me!  …I decided to focus on the aesthetics for a while, and took advantage of the golden evening light until the sun disappeared completely.

A stinkbug on purple coneflower.

A stinkbug on purple coneflower.

 

Crab spider on Ohio spiderwort.

Crab spider on Ohio spiderwort.

 

A bug (Hemiptera) sits perched in the late day sunlight.

A bug (Hemiptera) perches in the late day sunlight.

 

Ohio spiderwort.

Ohio spiderwort in the afterglow of the sunset.

 

Frozen Bugs (and Beetles)

My family and I spent some time exploring the frozen pond/wetland at our prairie during the holiday break.  We even got a couple days of great ice skating weather.

My three kids had a great time ice skating on the pond over the holidays.

My kids had a great time ice skating on the pond over the holidays.

While we were on the ice, we found some great patterns (see earlier post), but we also found quite a few frozen insects.  In particular, there seemed to be two species of insects – one bug and one beetle – encased in ice.  The bug was a species of Corixidae, or water boatman.  Its name comes from the fact that two of its legs are extra long and sport hairs that make the legs look and function like the oars on a boat.  Water boatmen suck the juices from algae and plants through their long straw-like beak and are common inhabitants of just about any freshwater body around here.  They are also frequently seen in the ice when those water bodies freeze up in the winter.  Apparently, water boatmen can survive freezing and just start swimming again when the ice thaws.  A pretty neat trick for an aquatic bug that lives in a temperate climate.

A frozen water boatman

A frozen water boatman

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Another one

Another one

We had a two day period over the holidays during which the temperature briefly climbed up to about 60 degrees (Fahrenheit).  The warmth didn’t last long enough to spell an end to our ice skating, but did melt some of ice along the edges of the pond.  Apparently, the warm temperatures also encouraged a number of individuals of one particular beetle species to go exploring.  Unfortunately, it appears quite a few of those beetles wandered out onto the ice and didn’t make it back.  We didn’t see any of them on the ice before the warm spell, but found lots of them afterward.

Here's one of the beetles that froze after (apparently) getting caught out on the ice after a warm day.  I'm hoping one of my entomologically-inclined friends can help me out with identification and/or natural history info?

Here’s one of the beetles that froze after (apparently) getting caught out on the ice after a warm day. I’m hoping one of my entomologically-inclined friends can help me out with identification and/or natural history info?

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This beetle apparently got flipped over before freezing.

This beetle apparently got flipped over before freezing.

I was curious to know whether those frozen beetles could do the same thaw-out-and-re-energize trick as the water boatmen, so I broke off a chunk of ice containing a frozen beetle and brought it home to thaw it.  The beetle has been thawed out for more than a week now, and hasn’t moved, so I’m pretty sure it’s dead…  The next question is: where were those beetles staying during the very cold weather earlier this winter, and how did they prevent themselves from freezing to death then?

Always more questions…

For more information on how water boatmen and other creatures weather the winter, see this earlier post from 2011.