Variable Antepione is indeed variable, as you can see from these photos taken in April, July, and September.

Carroll Co., VA 4/25/08

Carroll Co., VA 4/25/08

Carroll Co., VA 4/25/08

Carroll Co., VA 7/5/07

Carroll Co., VA 7/6/07

Summer female.

Carroll Co., VA 7/15/12

Summer female.

Carroll Co., VA 7/15/12

Carroll Co., VA 7/24/10

Carroll Co., VA 9/3/06