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"Spider Fly is a genus of dipterous insects, chiefly allied to the forest fly. The insects are parasitical on birds, never on quadrupeds. One species frequently infests the common fowl, the black-cock, and other birds. It is greenish-yellow, with smoke-colored wings."—(Charles Leonard-Stuart, 1911)

Spider Fly

"Spider Fly is a genus of dipterous insects, chiefly allied to the forest fly. The insects are parasitical…