Egg: Light brown, cylindrical, about 0.6 mm long and 0.4 mm broad.
Larva: 0.8 mm when freshly born and 5.8 to 7.0 mm when grown. When young, the larva is white with a reddish hue, maturing to a creamy white. The color of the head capsule is yellowish brown.
Pupa: white with black eyes, 4.1 to 5.7 mm long.
Females are 5.9 to 6.3 mm in length and 1.9 to 2 mm broad, whereas males are 5.1 to 5.6 mm long and 1.6 to 1.8 mm wide and are metallic light green.
Territory:
It is found in North America. T is also generally distributed throughout the northeastern United States and southern Quebec.
Damages caused by Arborvitae Weevil:
The earliest sign of damage, minor burning of the shoot tips, appears between May and July. When the shoot tips are examined more closely, it is possible to make out irregularly shaped portions eaten out of the shoot tips by feeding adults. The cambium of bigger roots is the larvae’s primary source of nutrition after first feeding on finer roots. The chewed-up bark on the roots is an indication of the damage.
Life history and habits:
The arborvitae weevil spends the winter as a mature larva in the soil near the host plant’s roots. Pupation takes place in April, and adults emerge in May. Adults can be seen on the leaves from May to July, feeding on the tips of the new flush. Females deposit eggs in tiny clusters, eight eggs on average, in the soil near host trees after mating. In roughly 15 days, the eggs hatch. Larvae burrow into the soil and feed on host roots for seven instars before developing in late fall.
