"Other species named after Zappa include a fossil snail named "Amaurotoma zappa" and the Cameroonese spider "Pachygnatha zappa", so named because a marking on the female's ventral surface resembles the Zappa mustache.A gene of the bacterium "Proteus mirabilis" that causes urinary tract infection is named "zapA" (others are named "zapB" through "zapE").