Ohio Stoneflies

Males (Females not described)

1.         Processes on both tergites 7 & 8 or on neither . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

          Process on either tergite 7 or 8 but not both . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.         No process on either tergite 7 or 8; or a single, rounded barely raised process on each                     segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Leuctra ferruginea

            Processes on both tergites 7 & 8; that on 8 either single or bitrilobed . . . . . . . . . . . . . . . . 3

3.         Processes on tergites 7 & 8 both bilobed . . . . . . . . . . . . . . . . . . . . . . . . . . . . .L. duplicata

            Processes on tergites 7 & 8 both with single lobe. . . . . . . . . . . . . . . . . . . . . . . . . L. rickeri

4.         Process on tergite 7 only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

            Process on tergite 8 only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.         Process of tergite 7 reaching anterior margin of tergite 8 . . . . . . . . . . . . . . . . . . . .L. tenius

            Process of tergite 7 not reaching more than halfway across tergite 7 . . . . . . . . . . . L. tenella

6.         Tergite 8 with a single process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

            Tergite 8 with 2 slender processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. sibleyi

7.         Process on tergite 8 bilobed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . L. alexanderi

            Process on tergite 8 rounded and barely raised . . . . . . . . . . . . . . . . . . . . . . . L. ferruginea

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