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Cucurbits

Other Pests or Damage You May See—Vegetative Growth

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Arthropods Diseases/Nematodes
  • Darkling beetle
  • Flea beetles
  • Grasshoppers and crickets
  • Leafhopper
  • Seedcorn maggot
  • Thrips
  • Cucurbit yellow stunting disorder virus

Names link to information on identification and management.

Click on photos to enlarge
Arthropods
Darkling beetle adult.
Darkling beetle adult
Identification tip: Adults vary from black or bluish black to rusty brown. Do not confuse with predatory ground beetles, which prey on various soil dwelling pests.
Field cricket nymph.
Cricket adult
Identification tip: Adult crickets are black or brown, and are about 1/2 to 1 inch in length.
Tobacco flea beetle adult.
Flea beetle adult
Identification tip: The adult is small and shiny with enlarged hind legs. When disturbed it jumps like a flea.
Adult devastating grasshopper.
Grasshopper adult
Identification tip: The adults are elongate, robust, winged and good flyers. Commonly brown, gray, green, or yellowish with greatly enlarged hind legs adapted for jumping. The somewhat similar cricket has longer antennae and is darker.
Leaf stippling and marginal burn caused by southern garden leafhopper.
Leafhopper damage
Identification tip: Feeding can cause severe white stippling and yellowing of the leaves.
Larva (top), prepupa (left), and pupae (center) of seedcorn maggot, Delia platura.
Seedcorn maggot
Identification tip: Where slow, spotty emergence is observed, dig up the seed and inspect for larvae. They are about 1/4 inch, whitish, cylindrical and taper toward the end.
Adult western flower thrips.
Thrips adult
Identification tip:
Minute, slender-bodied insects with two pairs of long, narrow wings, the margins of which are fringed with long hairs.
   
Diseases
The first symptom of cucurbit yellow stunting disorder is a yellow spotting of leaves.
Cucurbit yellow stunting disorder
Identification tip:
First yellow spots appear on leaves, which develop into interveinal chlorosis (veins remain more or less green but the rest of the leaf turns bright yellow).
   

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