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Dendroctonus terebrans (Olivier) adults may be accurately sexed by means of the seventh abdominal tergite. Stridulation sound and stridulation movement are useful especially in field observations but not completely accurate because some male beetles do not stridulate and some females do.Laboratory rearing is accomplished by the introduction of parent beetles to fresh pine bolts. Development takes ca. 78 days at 23 °C ± 2 °C or ca. 1302 degree days of effective temperature.

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A model of the seasonal development of Dioryctria amatella (Hulst.) is presented. The proposed biological model considers the various habitats where D. amatella is reported to occur. Cronartium fusiforme Hedge, and Hunt cankers and second-year cones of various pine species are indicated to be the main routes necessary to the development of Dioryctria amatella.