Katydids

by Nanette Londeree, Master Rosarian

SIGNS

Green, grasshopper-like adult insects with shorter bodies and longer antennae than grasshoppers
Wingless grasshopper-like nymphs that are the same color as the material they are feeding on
Nymphs with black and white banded antennae
Gray, oval 1/8- to 1/4-inch long eggs in two overlapping rows on twigs and leaves Soft chirping sound at night

SYMPTOMS

Chewed edges of leaves, flowers or buds
Holes in leaves, flowers or buds
Chewed leaves on citrus or stone fruits; gray scar tissue on citrus fruit

CAUSE

Katydids, belonging to the family Tettigoniidae

OPTIMAL CONDITIONS

Nymphs appear in April and May and require 2 to 3 months to mature
Produce one generation a year
Generally feed at night
Fly at night and hide in long grasses near the plants they feed on during the day

TREATMENT

Prevention:

Remove long grass around affected plants to eliminate hiding places
Encourage biological control by attracting their predators to the garden – bats, birds and snakes 

Elimination:

Elimination is generally not necessary

GOOD GUY / BAD GUY?

This guy is most often just a nuisance and doesn’t cause significant damage

The photo of the Katydid is by Baldo Villegas from the extraordinary website: http://members.tripod.com/buggyrose/irosepests.htm

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