I grew up calling these arachnids “Daddy Long Legs”. This bad boy is about six inches from leg tip to leg tip and one of the largest I’ve seen (they grow them big in Texas). I plugged the photo into iNaturalist and their algorithms gave me the order of Phalangida. Wikipedia says the order is now called Opiliones and are also known as harvestmen (which seems much more sinister to me than daddy long legs, but maybe I watched too many old horror flicks as a teen). The Wikipedia article (https://en.m.wikipedia.org/wiki/Opiliones) is quite detailed and may seed some more nightmares, even though these guys are harmless to humans.