| 1. sheep tick [ Synonyms: melophagus ovinus, sheep-tick, sheep ked] | |
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Wingless fly that is an external parasite on sheep and cattle
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| 2. sheep tick [ Synonyms: ixodes ricinus, sheep-tick] | |
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Parasitic on sheep and cattle as well as humans; can transmit looping ill in sheep (acute viral disease of the nervous system); a vector for Lyme disease spirochete
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