vs. still water, streams, ponds, marshes etc. The Needham's skimmer (Libellula needhami) lay their eggs in flight, while the ebony jewelwing (Calopteryx maculata) submerges for up to two hours while depositing eggs. The nymphs are aquatic. Both the larva and adults are fierce predators, feeding primarily on insects. They are frequently sexually dimorphic and males and females may have different colors and patterns. Some species like the roseate skimmer (Orthemis ferruginea) and common green darner (Anax junius) can be seen in their adult form year round. Others are limited to a few weeks or mouths each year like the calico pennant (Celithemis elisa) flying April - August and Needham's skimmer (Libellula needhami) flying May - September. The Texas emerald (Somatochlora margarita) and the rare and sarracenia spiketail (Cordulegaster sarracenia) are endemic to southeast Texas and adjacent areas of Louisiana. History In pre-Columbian times, people of the Caddoan Mississippian culture occupied areas just to the north of the Big Thicket region. The Atakapa-Ishak (including the subgroups Akiosa, Akokisas, Bidai, Deadoses, and Patiri) occupied the Big Thicket area, living nomadically along the Gulf of Mexico in Southeast Texas and southwest Louisiana. They left evidence of hunting camps and such, although the Big Thicket area itself does not appear to have been the site of any significant permanent settlements comparable to the Caddo mound builders to the north. The Atakapa-Ishak speaking people were largely decimated by European diseases in the late eighteenth century, with only a few descendants surviving today. About the same time as the collapse of the Atakapa-Ishak people, the Alabama-Coushatta, originally two closely associated tribes living in adjacent areas of Alabama, began a westward migration about 1763 due to the encroachment of Europeans. The Alabama-Coushatta settled into the northern sections of the Big Thicket area by 1780, prior to the acquisition of their reservation in 1854. The Spaniards ruled the region 1521–1810, defining the Big Thicket's boundaries with the north as El Camino Real de los Tejas (Old San Antonio Road), a trail from central Texas to Nacogdoches; in the south as the Atascosito Road running from southwest Louisiana to Southeast Texas; to the west by the Brazos River; and to the east by the Sabine River. The Spanish established a settlement called Atascosito on the Atascosito Road at the Trinity River in 1756, renamed Villa de la Santissima Trinidad de la Libertad (Village of the Most Holy Trinity of