Tropidia Tropidia (Tropidia) calcarata Williston 1887 ? – Lily-loving Thickleg Tropidia (Tropidia) mamillata Loew 1861 * – Shiny Thickleg Tropidia (Tropidia) quadrata (Say 1824) – Common Thickleg Share this:TwitterFacebookLike this:Like Loading...