18b. Pronotum low, without high arching crest                  .................................... 19 19a. Body dark green or gray, mottled with black and white. Hind wings black... A. maculipennis (Scudder) POINT-HEADED GRASSHOPPER. Color plate 1. 19b.   Body green and unspotted. Hind wings yellowish toward base with sooty gray area in middle ... A. neivdensis (Thomas) 20a.Fastigium excavated dorsally, without median carina                             ... 21 20b.Fastigium not excavated, or with median carina                     ...........  23 21 a. Lateral pronow carinae parallel. Pronotum without lateral inside arm (fascia dorsajis interior or FDI) (Fig. 95) ... Dichronwrpha viridis (Scudder) SHORT-WINGED GREEN GRASSHOPPER 21b.Lateral pronow crests slightly to strongly constricted (Fig. 96). Pronotal disk usually with triangular FDI (Fig. 96) ... Orphulelia        ........................................... 22 22a. Lateral pronotal carinae cut by one sulcus (Fig. 96). Tegmina of male lacking well devel- oped spurious vein in ulnar area. Female with anterior ulnar vein usually noticeably curving anteriorly. Dorsum of fastigium with depression mostly weak and near apical edge; fastigium mostly obtuse (Fig. 97). Eastern plains ... 0. spect  .osa (Scudder) 22b.Lateral pronow carinae cut by two or three sulei (Fig. 98). Tegmina of male usually with well- developed spurious vein in ulnar area. Female with anterior ulnar vein usually nearly straight. Fastigium usually rectangular to acute, with well- developed depression (Fig. 99). Statewide ... 0. peli,dna (Burmeister). Color plate S. 23a. Hind tibiae bright orange to red. Hind fe- mora exceeding tegmina            .......................... 24 23b. Hind tibiae not bright orange or red. Teg- mina exceeding femora           ............................ 26 24a.Fastigium rounded convex, with median carina faint. Male with knee black. Face rounded. Tegmina with three to five dark markings. Inner spurs very unequal ... Phlibostronm quadrinwculatum (Thomas) FOUR-SPOTFF-D GRASS- IFOPPER. Color plate 5. 24b.Fastigium concave, with distinct median carina. Tegmina and body nearly plain