This is the second Catocala that showed up at our porch light. The previous night C. unijuga came to the same light . At first I thought they were the same species, but after the photos were sent to Derek Sikes at UAM and then to several lepidopterists and finally the specimens sent to Larry Gall for id confirmation, I learned how to tell the difference. In C. semirelicta, the black median band in the hind wing doesn't make it all the way to the inner margin as it does in C. unijuga. Both of these species are found in BC which isn't that far away from Wrangell. The other similar Catocala's don't come this far west. These are the first 2 records of the genus in the state.