The digestive tract of the cockroach, Blaberus craniifer Burmeister, contains amylase, alpha- and beta-glucosidases, beta-fructofuranosidase, alpha- and beta-galactosidases, but no cellulase. The most active site of hydrolytic action is the midgut, followed by the foregut, hindgut, salivary gland tissue, and Malpighian tubules.
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W.M. Banks (1963) studied this question.
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