Ohio Stoneflies

Males

1.         Epiproct elf-foot shaped (Figs. 2, 3), tip in lateral view drawn out, projecting higher than dorsal             proximal aspect and dorsal plane concave to almost straight; tip expanded subapically, not             strongly recurved at apex, hook 4-5 times longer than greatest width, base lacking well-                        developed posterior lobe or only slightly developed . . . . . . . . . . . . . . . . . Sweltsa hoffmani

            Epiproct tip with bilateral vertical auriculate projections proximally on compressed bulk                         (dewlap), with dewlap shallow and elongate giving entire tip appearance of being a delicate             broadly curved, albeit sinuously-sided, hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2.         Epiproct tip with bilateral vertical auriculate projections proximally on compressed bulk (dewlap), with duwlap shallow a

.S. lateralis

Females

1.         Subgenital plate broadly truncate to rounded apically, posterolateral margins slightly curved or straight; egg without collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. Sweltsa hoffmani

            Subgenital plate including narrow elongate flap usually noticeably longer than wide, often with margins of triangular flap explanate; egg with collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. lateralis

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