Tri,merotropis ogres& McNeill, TOOTHED FIELD GRASS- HOPPER. Size: 24-43 mm. General Distribution: E. of Rocky Mountains to E. New Mexico, N. to Alberta, Saskatchewan, and Manitoba, Canada. Distribution in New Mexico: Chaves, Lea, Quay, Union. Habitat: Sand dunes. Host: Apparently eats Psoralea sp. Adults Present: June-August. Notes: A widely variable genus of band-winged grasshoppers; median ridge almost never high, always cut by two sulci; eyes relatively large-, hind wings almost always banded; tegniina banding variable. T agrestis differs from other members of the genus in NM in having unbanded teginina. Hind wings with yellow basal area and with central dark band with short spur; inner hind femora orange with two black patches; hind tibiae orange; hind tarsi white. Habitat also useful in determination. Not economically important. Reference: Otte 1984. Trimerotropis barnumi Tinkham. Size: 30-45 mm. General Distribution: S. Idaho, S. through Nevada, Utah, and Colorado, to N. Arizona and New Mexico. Distribution in New Mexico: NW quarter of state (see agrestis map). Habitat: Sand hills. Host: Apparently eats Psoralea sp. Adults Present: July-September. Notes: Similar to T agrestis, but without black patches on inner hind femora; pronotum shorter and wider. Not economi- cally important. Reference: Otte 1984. Trimerotropis californica Bruner [= T. strenua McNeill], STRENUOUS GRASSHOPPER. Color plate 7. Size: 25-43 mm. General Distribution: Idaho and S. Oregon to Colorado, S. into Mexico. Distribution in New Mexico: Bernalillo, Dora Ana, Eddy, Hidalgo, Otero, Rio Arriba, Sandoval, San Juan, Santa Fe, Sierra, Socorro, Valencia. Habitat: Desert and desert grassland Host: Reared on grasses. Adults Present: June-October. Notes: Can be confused with T. latifasciata, but with projection on lower margin of lateral lobes of pronotum. With two distinct bands ontegmina; innerffindfernora marked with black and white; hind tibiae orange, whitish toward base; basal area of hind wing yellow; band of hind wing with short spur. Not economically important. Reference: Otte 1984.