Performance of Tomicus yunnanensis and Tomicus minor (Col., Scolytinae) on Pinus yunnanensis and Pinus armandii in Yunnan, Southwestern China

Table 4

Developmental periods of Tomicus yunnanensis in logs of Pinus armandii and P. yunnanensis in laboratory condition. The developmental periods were estimated from the median date of entering (50% entrance holes existed) to the median date of emergence (50% of new generation emerging from brood logs).

Host species	Median date of attack	Median date of emerging	Developmental period, days
P. yunnanensis	Jan. 4	Apr. 3	89
P. armandii	Jan. 8	Apr. 12	93