甘肃省白龙江林区苗圃主要金龟子害虫种类及多样性

Main Pest Species and Diversities of Scarab in the Nurseries of Bailongjiang Forest Area of Gansu Province

白龙江林区苗圃主要金龟子害虫种类21种,隶属于2科,12属。鳃金龟科占80.95%,丽金龟科占19.05%。地处白龙江上游的安子沟林场以小云斑鳃金龟、粗绿彩丽金龟、大栗鳃金龟、灰胸突鳃金龟为优势种;地处白龙江中游的沙滩林场以小云斑鳃金龟、粗绿彩丽金龟、大云斑鳃金龟、蓝边矛丽金龟、大栗鳃金龟、灰胸突鳃金龟为优势种。优势度指数均以7～8月最高。

There were 21 main pest species of scarab, belonging to 2 families, 12 genera in the nurseries of Bailongjiang forest area. Melolonthidae accounted for 80.95% and Rutelidae accounted for 19.05%. The dominant species were Polyphylla gracilicornis, Mimela holosericea, Melolontha frater and Hoplosternus incanus in Anzigou forest farm, which was located in the upper reaches of Bailongjiang; and the dominant species were Polyphylla gracicornis, Mtmela holosericea, Polyphlla lativdlis, Callistethus plagiicoUis, Melolontha hipocastanea mongolica and Hoplosternus incanus in Shatan forest farm, which was located in the middle reaches of Bailongjiang. The domi- nance indexes were both highest in July-August.