daddy-longlegs

noun (used with a singular or plural verb)

1. Also called harvestman. any of numerous spiderlike arachnids of the order Opiliones, having a compact rounded body and extremely long, slender legs.
2. British. a crane fly.

noun

1. British an informal name for a crane fly
2. Australian, US and Canadian an informal name for harvestman (def. 2)