New Pest Response Guidelines - aphis - US Department of Agriculture

Pest Information
Adult
Adult lifespan is approximately one week. Reports of adult lifespan vary
depending on the region. In Hunan, the average moth life span is 7.5 days in
the overwintering generation, 7 days in the first generation, and 8 days in the
second generation. In Guangxi, the average life span is 8 days in the
overwintering generation and 7 days in other generations (CABI, 2011b).
Egg
Under average temperatures of 28°C, the egg stage is about 8 days; decreases
in temperature to average 25°C will increase the egg stage to between 9 and 11
days. At 30°C, egg development is a shorter duration of about 6 days (CABI,
2011b; Hou, 1987; Peng, 1959).
Larva
Larval development time can be greatly extended by diapause but also varies
with the number of generations and region. At 28°C, the larvae stage lasts
about 32 days, which shortens as the average daily temperature increase to
about 26 days at 30°C (Peng, 1959). The diapause period is controlled by day
length, but the photoperiod response is also compensated by temperature. The
diapause period can last approximately 20 days in Guangdong, 90 days in
Hunan, and 120 days in Henan province The reported larvae lifespan is greater
than 45 days and less than 65 days, although this range is highly dependent on
the region and generation number (CABI, 2011b).
Pupa
In northern parts of its range through China, the pupal stage lasts 21 days in the
overwintering generation, 16 days in the first generation, and 13 days in the
second generation. In southern China, the pupal stage lasts 16 days in the
overwintering generation and from 12 to 17 days depending on which
generation is developing (CABI, 2011b).
Dendrolimus sibiricus
In their native range in Russia, optimal development of the moth is found in
areas with growing-degree days above 5ºC (GGD5) between 950 and 1350 and
annual moisture index values (AMI) between 1.3 and 3.0 and, outbreaks are
more prevalent in areas with GGD5 between 1110 and 1250 and, AMI between
2.0 and 2.5 (Baranchikov et al., 2009). In Europe, areas that map with these
values are found above latitude 54-56ºN (Baranchikov et al., 2009).
Adult
Newly emerged SSM females will lay eggs for 7-10 days. Average lifespan of
mated females is 9 days and that of unmated females is 13 days (Liu and Shih,
1957).
2-26 Dendrolimus Pine Moths 12/2012-01