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
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