Abstract
A new species of Blattisocius Keegan 1944 is described from specimens collected from a grain store in Giza, Egypt. Blattisocius flagellatus n. sp. has 33 pairs of long and flagellate setae on the dorsal shield, the ventrianal shield possesses three pairs of pre-anal setae, and the fixed digit of the chelicera is shorter than movable digit. A key is provided for the eight species of Blattisocius known from Egypt.
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