giant yellow "palm eating" grasshoppers -- Lets talk Yucca

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Date Posted: 07:02:43 11/21/09 Sat
Author: Tony O
Subject:

giant yellow "palm eating" grasshoppers

This was posted on my other board, and I wanted to save it for future references. I'm adding it here till I can make a more permanant place for it. (Also an answer to it as well)
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. giant yellow "palm eating" grasshoppers -- A Friend, 09/ 1/01 18:16
Noticing how this site holds its messages longer than most, I'm posting this here for future references.
It was posted on the Hardy Palm & Subtropical message board and won't last very long there.

Re: giant yellow "palm eating" grasshoppers
Posted by John of Colorado on 9/1/2001, 6:20 pm , in reply to "giant yellow "
User logged in as: John_CO
205.188.199.171

Rob, I am an entomologist and may be able to help. I can't definitely identify your grasshoppers without a better description and preferably a photo or a specimen, but I suspect they may be of the genus Arphia, Taeniopoda or Schistocerca.
Grasshoppers belong to the family Orthoptera, which means pleated-wing. Take the family name and capitalize the root for pleated, and you discover what creature a certain pesticide company went into business to control (ORTHOptera).

Problem with grasshoppers is they go through nymphal stages and when they're big enough to cause damage and be easily seen, it's late in the game.

Ortho and other companies now make grasshopper control products that induce fungi that kill grasshoppers. They are applied to the plants, and grasshoppers acquire the fungi when they make contact with the plants.

Time to apply this pesticide is when night time temperatures average 50F, because that is when grasshopper egg masses are hatching. Emergent grasshoppers are very tiny and very vulnerable. Then, later in the season, you won't have nearly so many adults, and hand control is much easier and more effective.

For this year, you will have to hand control or use something like malathion- but adult grasshoppers are tough and some are very chemical resistant. It may or may not work. Next year, get a fungal grasshopper control and apply it early.

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Another idea to . . . Stop them from eating -- Bob, 07:07:12 11/21/09 Sat