Tim Fitzharris / Bald Cypress (Taxodium distichum) swamp, Sam Houston Jones State Park, Louisiana

Gavin Hellier / Timelapse of traffic on a highway, with Houston skyline in the background, Texas, USA, June 2016. Hellier

John Abbott / Banded Hairstreak (Satyrium calanus) Coldspring, Big Creek Scenic Area, Sam Houston National Forest, San Jacinto County, Texas, USA.

John Abbott / Whitemouth Dayflower (Commelina erecta) Coldspring, Big Creek Scenic Area, Sam Houston National Forest, San Jacinto County, Texas, USA.

Doug Wechsler / Dogbane Beetle (Chrysochus auratus) on Black-eyed Susan (Rudbeckia hirta) Houston Meadow, Wissahickon Park, Philadelphia, Pennsylvania, USA, June.

Will Watson / Houston at night with the Texas Medical Center in the background, Texas, USA. March 2012.

John Abbott / Bee Like Robberfly (Laphria saffrana) feeding on a Burrowing Bug (Cydnidae), Big Creek Scenic Area, Sam Houston National Forest, Texas, USA

John Abbott / Gray petaltail dragonfly (Tachopteryx thoreyi) female resting on bark, Sam Houston National Forest, Texas, USA, June

John Abbott / Orange sulphur butterfly (Colias eurytheme) on flower, Sam Houston National Forest, Texas, USA, April

John Abbott / Oklahoma Clubtail dragonfly (Gomphus oklahomensis) male at rest, Sam Houston National Forest, Texas, USA, April

John Abbott / Feather-legged fly (Trichopoda lanipes) female resting on flower, Sam Houston National Forest, Texas, USA, June

David Welling / Male Arrowhead spiketail (Cordulegaster obliqua) hovering in flight, Sam Houston National Forest, San Jacinto County, Texas, USA