Curious to see if less contrast changes your mind. Still looks pretty speckled, though.

These photos from slides are quite tricky. Since some of my slides are underexposed and/or color-caste (I avoided flash photography of adults, much preferring ambient lighting for several reasons, which could and often did, go quite wrong), they require digital corrections in and of the scan, and try as I do, lots of room for control = lots of room for error.
I'm very much (once again) on a learning curve with Datana and much appreciate your assistance.
My sumac stock is presently frozen in the ground but come spring I will announce my new very special sale prices!
By the way, have you seen declines in Datana in TX as we seem to have up in the Midwest over the past decade or two?

I was asked by a scholar working on Notodontidae if I would be willing to rear Datana from any eggs I might encounter and since I was utterly lost understanding the adults I did just that. Turns out Datana eggs are pretty easy to find if you go looking for them and fairly easy to rear if one has the time so I ended up with a great number of adults. Some were sacrificed for science but the rest were let free right outside my door (often when trying to take their photo). I had also planted a number of trees and shrubs over the same time frame so predictably the Datana have thrived. 2015 - 2018 they completely defoliated most of the recently planted trees. This fall they left some leaves, but the trees themselves have grown and many a Yellow-billed Cuckoo was spotted.

I have noticed that the balance of power has shifted somewhat. It was quite hard to find Datana ministra in 2014, but now they are encountered equally often as Datana contracta. A direct result of the above I think.

Up here Datana seems fairly convincingly declined. No hard evidence, but only quite occasional at lights compared with years back. They never have showed up in numbers, though.
Back when I was a boy among the corn fields of south central MN I remember my grandma burning (!) masses of 'worms' from our three black walnut trees. I never knew of many (any?) walnut trees anywhere else nearby and yet Datana integerrima still found ours. And yet neither MPG nor BG maps nor SCAN maps yet show that species recorded in MN! What do/don't we know?