Duskywing Skipper butterfly

A Duskywing Skipper -- a brownish-black, medium-size butterfly -- feeding on a Purple Coneflower (Echinacea sp.). This butterfly is either a Juvenal's Duskywing (Erynnis juvenalis) or a Horace's Duskywing (Erynnis horatius). According to Ken Larsen, a well-known local butterfly expert, timing is everything: "The Juvenal's is an early breed (until June or July) and the Horace's is a later breed (July or later). If the picture were taken in July, then it is anyone's guess." Since the photos were taken on June 20th, it seems more likely this is a Juvenal's Duskywing.