Definition of spider fly
1
: a sheep ked, bat fly, or similar usually wingless parasitic dipterous insect
2
: an artificial fly tied to imitate a spider or a spiderlike insect
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“Spider fly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spider%20fly. Accessed 7 Jul. 2022.
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