Photo of the Week – February 20, 2014

This the time of year when I start getting antsy to see green vegetation, flowers, and insects again.  Since our prairies are still brown and dormant, I have to live through photographs from previous field seasons.  Here is a photo from August 2012 I found yesterday while looking through old images.

A bush katydid on a rosinweed flower - The Nature Conservancy's Platte River Prairies, Nebraska.

Bush katydid (Scudderia?) on a rosinweed (Silphium integrifolium) flower – The Nature Conservancy’s Platte River Prairies, Nebraska.

The beautiful green creature in this image is a katydid, not a grasshopper.  The easiest way to tell is by looking at the length of the antennae, which are very long on katydids but very short on grasshoppers.  There are numerous species of both katydids and grasshoppers in our prairies, and by late summer, most have gone through their final molt and have become fully adult – with the wings to prove it.

You may not be aware that katydids have special hearing devices on their legs.  In the photo above, you can see dark pits in the “forearms” of the insect, right below their “elbows”.  Inside those pits are tympanum that vibrate just as our own eardrums do.  For an excellent description of this, and an explanation of how it’s an advantage to the katydid to have its ears on its legs, read this post on the Living with Insects Blog.

About these ads

About Chris Helzer

Chris Helzer is an ecologist and Eastern Nebraska Program Director for The Nature Conservancy. He supervises the management and restoration of approximately 4,000 acres of land in central and eastern Nebraska - primarily along the central Platte River. Chris is also the author of "The Ecology and Management of Prairies in the Central United States", published by the University of Iowa Press.
This entry was posted in Prairie Insects, Prairie Natural History, Prairie Photography and tagged , , , , , , . Bookmark the permalink.

One Response to Photo of the Week – February 20, 2014

  1. Beautiful! The singing Orthoptera are my second favorite insect group!

PLEASE COMMENT ON THIS POST!

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s