|
|
|
Grasshopper
 |
|
| [Note Guidelines] Photographer's Note |
Grasshopper
Grasshopper eggs are laid beneath the soil surface in pod-like structures that the female deposits from her abdomen. Each egg pod consists of 20 to 120 elongated eggs securely cemented together; the whole mass is somewhat eggshaped and covered with soil. A female grasshopper produces from eight to 25 egg masses. The species of grasshoppers that cause major crop loss overwinter in the egg stage, although a few other noneconomic species overwinter as nymphs.
In the Northern Plains, grasshopper egg hatch normally begins in late April to early May. The peak hatch occurs about mid June and the hatch is usually nearing completion by late June. Cool and extremely dry springs may delay the hatch, allowing it to continue into July.
Young grasshoppers are referred to as nymphs. They are similar to adults in general appearance but are smaller and have wing pads instead of wings. There are usually five or six nymphal stages and the length of time from egg to adult is 40 to 60 days. Knowledge of grasshopper instar identification is useful because it gives a rough indication of how far the hatch has progressed.
Normally, once fourth and fifth instar grasshoppers are present, the hatch is winding down. More important, recognition of fifth instar hoppers indicates that the winged adult stage is soon to follow. Winged adults are much more mobile than the nymphal stages. Wingpads of first to third instar hoppers are borne saddle-like over the thorax. Wingpads of fourth and fifth instar hoppers are pointed backward over the abdomen and differ only in size. In the fourth instar they are relatively small and extend only to the first abdominal segment, while in the fifth instar they are large and extend past the second abdominal segment.
Adults of crop-damaging grasshopper species become numerous in mid July with egg laying activity usually beginning in late July and continuing into fall. Eggs are deposited in a variety of non-crop areas including ditches, fence rows, shelterbelts and weedy areas. They are also laid in cropped areas including late season crops, weedy fallow fields and headlands as well as in haylands and alfalfa. Migratory and clear winged grasshoppers frequently lay eggs in pastureland. |
Only registered TrekNature members may rate photo notes. |
|
|
| Discussions |
| None | | You must be logged in to start a discussion. |
|
You must have gotten up close and personal for this! The image has a slightly soft look about it, like your DOF is just a little off, but all in all, good work!
- rkyobo
![Silver Star Critiquer/Silver Note Writer [C: 29 W: 5 N: 21]](http://i1.treknature.com/misc/s-n-s.gif)
(213) - [2005-09-15 9:43]
-
This is an absolutely AMAZING macro! Wow! Great job...the detail in this grasshopper photo is very good. I also enjoyed your information on the grasshopper.
![Silver Note Writer [C: 4 W: 3 N: 62]](http://i1.treknature.com/misc/n-n-s.gif){kind=small}
![Gold Star Critiquer/Silver Workshop Editor/Silver Note Writer [C: 77 W: 17 N: 48]](http://i1.treknature.com/misc/g-s-s.gif)
(263)