Photo of the Week – March 9, 2012

Toadstool Geologic Park is a small public area hidden away in the northwestern corner of Nebraska.  The site is one of the most scenic in Nebraska, but is remote enough that relatively few people visit.  Those who do make the trip can see tracks and fossils of animals that lived in the area 30 million years ago, including camels, rhinos, and others.

Toadstool Geologic Park is part of the Ogalala National Grasslands, administered by the U.S. Forest Service.  The grasslands would be called shortgrass prairie by most of us, but they are technically part of the “shale mixed-grass prairie – characterized by cool season grasses such as western wheatgrass, green needlegrass, and needle-and-thread.  They and other plants, including sego lilies, rabbitbrush, and leafy musineon, grow in dry clay soils that only receive an average about 10-15 inches of rain per year.

One of the reasons I love Nebraska is the variety of landscapes found in the state.  I can travel from the oak woodlands and tallgrass prairies of eastern Nebraska to a place like Toadstool Park in a single day of driving.

There’s an awful lot to explore in between too, and I feel like I’m just getting started.

Photo of the Week – February 17, 2012

Pop Quiz:  Are the creatures in this photo butterflies or moths?  Which is the male and which is the female?

Sarpy County, Nebraska

Answer:

These are moths.  While they have enough color that many people might call them butterflies, the antennae distinguish them as moths.  Butterflies have long straight antennae with little knobs at the tip.  Moths, on the other hand, have fuzzy antennae, and males (such as the one on the right in this photo) have much fuzzier antennae than females.  The males use their antennae to find females by following their pheromone trails.

Now, maybe one of you can tell me why at least some moths appear to have a darker spot in the center of their big compound eyes – making it look like they have a large pupil in each eye.  I’ve noticed the trait on other moths I’ve photographed, but don’t know whether or not the dark spots have a particular function.  I’m guessing that among the readers of this blog someone will know the answer.  Thanks in advance!

(Oh, and if you’d like to identify the moth species for me, that’d be great too!)