Here are verso images of male Adeloneivaia jason specimens from Costa Rica.
Note the hindwing costa is almost evenly convex from the body to the apex instead of "humped" along its inner half. There is a narrow, preapical hindwing line that extends from the costa to just below the cell where it fades to oblivion.
The forewing cell is marked by a black streak that usually thickens and darkens in its lower half (resembles letter b), the part that corresponds to the larger white dot on the dorsal surface.
Adeloneivaia jason male (verso), Costa Rica, 78mm, courtesy of Dan Janzen.
Adeloneivaia jason male (verso), Costa Rica, 62mm, courtesy of Dan Janzen.
Adeloneivaia jason male (verso), Costa Rica, 67mm, courtesy of Dan Janzen.
Adeloneivaia jason male (verso), Costa Rica, 78mm, courtesy of Dan Janzen.
Adeloneivaia jason male (verso), Costa Rica, 69mm, courtesy of Dan Janzen.
Adeloneivaia jason male (verso), Costa Rica, courtesy of Dan Janzen.
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