Key to the species of Siphanta

Costal margin of tegmen convex for its entire length, more strongly so in proximal half; Outer claval cell red with black granules, often basally concolorous with rest of tegmen

Select

Costal margin of tegmen convex over proximal half, thence straight or slightly concave to apex; Outer claval cell almost completely brown

.Select - Siphanta occidentalis Fletcher