The two photos below were taken in Allen Williams yard, in Pharr, Texas on the afternoon of 01-August-2004. Allen's yard was our first stop in the valley for this trip. Our party consisted of Joanne, me along with our friends Jim and Susan Hengeveld. We wanted to see the Black-Headed Nightingale-Thrush that has been in Allen's yard for just over 9 weeks before beginning a fun week of Birding and Butterflying in the Rio Grande Valley.
While waiting for the Nightingale-Thrush to make it's scheduled arrival at 8:00 p.m. (He was on time!), Susan saw the hairstreak shown below land in a small bush as Allen was giving us a tour of his magnificent backyard. I apologize for the poor quality of the photos, but it landed about 7.5 feet off the ground!
After reviewing our available references (Bordelon and Knudson, & Brock and Kaufman), we initially thought it may be a Red-lined Scrub-Hairstreak (Strymon bebrycia).
After discussions on the TX-Butterfly list, we now believe that it is in fact a worn Yojoa Scrub-Hairstreak (Strymon yojoa)
What do you think this is?
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