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Grasshoppers of Wyoming and the West

Entomology

Comparison

Early instars of Opeia obscura, Eritettix simplex, and Psoloessa delicatula

FIRST INSTAR | SECOND INSTAR | THIRD INSTAR


Opeia obscura
BL 7.6-9.7 mm, FL 4-4.8 mm, AS 18-19.

Eritettix simplex
BL 8.5-10.2 mm, FL 4.9-6.1 mm, AS 18-21.

Psoloessa delicatula
BL 6.0-7.5 mm, FL 4.1-4.9 mm, AS 17-20.

Nymphs of P. delicatula have the face nearly vertical, while the faces of O. obscura and of E. simplex are strongly slanting. The latter two can be separated by the differences in color patterns of the pronotal disk; E. simplex has a dark velvet band along each side, while O. obscura is entirely pale tan.

Back to Opeia obscura Fact Sheet

Back to Eritettix simplex Fact Sheet

Back to Psoloessa delicatula Fact Sheet

List of Species Fact Sheets

Field Guide Contents

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Scott Schell

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Phone: (307) 766-2508

Email: insectid@uwyo.edu

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