Distribution and Host Range of Eight Species of Trogoderma in California1

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Abstract
Maps are used to indicate the known distribution of eight species of TTogoderma (T. glalnum (Herbst), T. granarium Everts, T. grassmaniBeal,T. incltt8Um LeConte, T. ornatum (Say), T. parabile Beal, T. simplex Jayne, and T. sternale Jayne) in California based on infestations recorded in the California Khapra Beetle Survey. The authors carefully note, however, that most infestations of T. granariumhave been eradicated and the known infestations, at the time of acceptance of their manuscript, would probably be fumigated by the time the paper was published. Of 132 host materials listed from survey reports, Trogoderma glabrum was found in association with 6, T. granarium with 37, T. gT08smani with 13, T. inclusum with 33, T. ornatum with 20, T. parabile with 77, T. simplex with 60, and T. sternale with 79. Results from preliminary food tests in the laboratory with T. granarium and T. parabile are given, and the known food habits of T. granarium, the species whieh has received the most attention, is presented as a summary of several published reports. The need for detailed investigations on Trogoderma is apparent from the distribution and broad host associations recorded for the eight species in California and by the general lack of information on Trogoderma as storage pests in the United States.

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