These Marsh Firetails Telebasis digiticollis are from the colony discovered by Terry Fuller a few days earlier near his home in central Cameron county, Texas - here on September 02, 2010. This taxon has previously been detected only as far north as Veracruz in Mexico, and is a new species for the U.S.
During two visits to a 40-yard section of the small water hyacinth-choked
slough I saw a minimum of 44 individuals (5 females, 39 males, including tenerals of both sexes).
Five adult males:
Two subadult males:
Two adult females; note in the zoom images the pair of horns (or digits) at the rear of the Prothorax (= pronotum) - arrowed: