Photograph of a grasshopper.

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Grasshoppers: Their Biology, Identification and Management.
User Handbook.

Section VI: Decision Support Tools (7 of 11)
 

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VI.7 Hopper Helper - cont.

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Key to Normal Nymphal Instars
(From Handford 1946)

Drawing showing the first instar and how the wing pads are rounded with no visible bulge at the apex.

Drawing of the second instar showing the wing pads rounded with visible bulge at the apex.

Drawing of the third instar showing the wing pads more sharply triangular and the slight venation.

Wing pads rounded with no visible bulge at apex ..... first instar

Wing pads rounded with visible bulge at apex ..... second instar

Wing pads more sharply triangular and showing slight venation ..... third instar
     

Drawing of the fourth instar showing the wing pads short and not extending beyond the first abdominal segment and more truncated.

Drawing of the fifth instar showing the wing pads elongated and extending beyond the second, but hardly beyond the third abdominal segment and more pointed at the apex.

Wing pads short, not extending beyond first abdominal segment, more truncated ..... fourth instar

Wing pads elongated, extending beyond the second but hardly beyond the third abdominal segment, more pointed at the apex ..... fifth instar.
     
 

Several of the adult grasshoppers possess wings that are not of the typical form and are sometimes confused with the wing pads of immatures. Examples of some short-winged species are shown below.

Drawing showing immature wing pads.

Drawing showing wing pads of Hypochlora alba, Melanoplus dawsoni, and Phoetaliotes nebrascensis for both sexes.

Drawing showing Aeropedellus clavatus female wings.

Immature wing pads.

Hypochlora alba
Melanoplus dawsoni
Phoetaliotes nebrascensis
Both sexes

Aeropedellus clavatus
Females only
     

Drawing showing Boopedon nubilum female wings.

Drawing showing Pseudopomala brachyptera wings for both sexes.

Drawing showing CHorthippus curtipennis female wings.

Boopedon nubilum
 Females only

Pseudopomala brachyptera
Both sexes

Chorthippus curtipennis
Females only
     

Drawing showing Chloealtis conspersa female wings.

  

Drawing showing Oedaleonotus enigma both short and long winged forms that are common for both sexes.

Chloealtis conspersa
Females only

  

Oedaleonotus enigma
Both short- and long-winged forms are common in both sexes.

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