Photo of the Week – September 3, 2015

Recently, we’ve been seeing some very pretty sunrises and sunsets (and moon rises, for that matter) because of a thin veil of smoke in the sky from the western U.S. wildfires.  That diffused light makes pretty good opportunities for photos, and I’ve been trying to take advantage of those when I can.

Last Saturday, I drove to a nearby town to do some shopping, but took my camera along.  I ended up stopping briefly at a restored prairie on both the way there and back because the light was so nice – even at around noon – and the wind was barely blowing.  Here is a selection of photos from the day.

Sphinx moth. Deep Well Wildlife Management Area.

A sphinx moth feeds on nectar from a tall thistle (Cirsium altissimum). Thistles were abundant in this prairie, as were bumblebees, other bees, butterflies, moths, and many other insects feeding on pollen and nectar from them.  Deep Well Wildlife Management Area, near Phillips, Nebraska.

Rough white lettuce (Prenanthes aspera) Deep Well Wildlife Management Area.

Rough white lettuce (Prenanthes aspera).  This is not a common species in this area, so it was nice to see a healthy population growing in a cropfield-converted-to-prairie.  The site was restored by Prairie Plains Resource Institute and owned/managed by Nebraska Game and Parks Commission.

Katydid. Deep Well Wildlife Management Area.

This is a very attractive little katydid (a female because of the ovipositor – the egg-laying tube coming out the back).  However, I couldn’t ever manage to photograph an even more attractive katydid that was colored both bright green and purple.  Gorgeous, but skittish.

Indiangrass. Deep Well Wildlife Management Area.

Indiangrass (Sorghastrum nutans) was reaching the tail end of its blooming period.   These anthers have lost their bright yellow color and will probably fall soon.

Butterflies. Deep Well Wildlife Management Area.

These eastern-tailed blue butterflies let me get close enough for a photo before flying off (still attached) to a more private location.

Damselfly on monarda. Deep Well Wildlife Management Area.

I had fun watching this damselfly but am still not sure what it was doing.  It was flying up to plants and bumping its “nose” against them repeatedly while moving up and down the stems.  I wonder if it was looking for insects to eat but I’ve never noticed this kind of behavior before.  It would bump plants for 15 or 20 seconds and then find a perch to sit on for a while before starting out again.

Rosinweed (Silphium integrifolium) Deep Well Wildlife Management Area.

Entire-leaf rosinweed (Silphium integrifolium) was done blooming and well into its senescence last weekend.  Summer must be nearly over…  That was quick.

Antlion Timelapse

Three years ago, I wrote a blog post on antlions, fantastic little creatures that live along the base of my house (and elsewhere in the world, I’m sure).  I moved to a new house last year, and was happy to find antlion larvae living along its foundation too.  I dug a few up the other day and brought them indoors for our family to watch (we have a praying mantis nymph in the house at the moment too).  I’ll put them back outside soon.

An antlion larva, a compact and efficient killer, with a muscular

An antlion larva, a compact and efficient killer, with venomous mandibles for subduing prey and a muscular “neck” for tossing sand (and insect carcasses) out of its pit.

It’s been fun to feed ants and other small insects to the larvae, and we’ve been able to watch them construct their cone-shaped hunting pits, but the construction is slow enough that it’s hard to see much progress over the course of a few minutes.  To help us get a better feel for how that construction process works, I set up my camera…

My Nikon D300s camera can be set to take a photo at regular intervals and make timelapse videos.  I set mine for a one minute frequency and let it run for about three and half hours.  During that time, the three antlion larvae moved around the bowl a lot more than I’d expected.  You can see for yourself in this 17 second video…

In the video, you can see that one larva constructs a pit near the bottom left corner of the frame. Another larva makes a larger pit near the center.  Near the bottom of the frame, a third antlion seems to start a pit, give up, wander over (and maybe through?) the smaller pit and then strike off toward the top of the frame and beyond.  The larva in the small pit then begins repairs.  I checked in on these larvae now and then while the camera was running, but never would have guessed there was that much action going on because it happened so gradually.  Compressing time with the timelapse process was invaluable.  It was also interesting how sporadically the action happened – as opposed to a fairly continuous excavation process.

Timelapse is a fairly simple, but very powerful, way to see the world.  You can see some earlier timelapse posts here:

Bison in a blowout

The formation of a cattle trail

A wetland “breathing” through evapotranspiration