Catalpa%20Sphinx (Ceratomia%20catalpae) - This%20caterpillar%20is%20one%20of%20the%20%E2%80%9Chornworm%E2%80%9D%20species%2C%20having%20a%20prominent%20black%20spine%20on%20the%20back%20end%20of%20the%20body.%20The%20caterpillar%20has%20a%20shiny%20black%20head%20and%20grow%20up%20to%203%20inches%20long.%20Although%20body%20coloration%20and%20markings%20change%20as%20caterpillars%20grow%2C%20lengthwise%20yellow%20or%20green%20and%20black%20stripes%20become%20more%20apparent%20in%20larger%20caterpillars.%20This%20night-flying%20adult%20hawk%20moth%20has%20long%2C%20narrow%20gray%20or%20brown%20wings%2C%20which%20have%20a%20wingspan%20of%20about%203%20inches%2C%20and%20robust%2C%20spindle-shaped%20bodies.