Digestive Tract pH of Two Unusual Insects

Abstract
The wood-feeding roach, Cryptocercus punctulatus Scudd., was found by Cleveland (1934) to contain a rich fauna of microorganisms in the digestive tract. A source of his material was decaying logs of various tree species near Mountain Lake, Virginia. This insect occurs at altitudes where moderate temperatures exist through all seasons of the year in two widely separated areas in the United States: The Appalachian Mountains and certain localities in California, Oregon and Washington. Six or seven years are required for development to maturity.

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