[Harmful symptoms]
Dry bark is often eaten outside the trunk.
[Prevention and control methods]
(1) Eucalyptus bark, pine, bagasse, etc. can be soaked in 100 times of 20% melamine and used as bait for booby traps. (2) In January to May, there are winged adults flying separately, using black light and other lights to trap and kill. (3) Find the main road leading to the nest, and naturally press the insecticidal amoticide into the nest along the ant path for lavendering.
[Morphological characteristics]
(1) Soldier ants. Wingless, 5 to 6 mm long, dark yellow head, yellowish thorax and abdomen. The head is ovoid, growing larger than wide, with a slightly narrow anterior end. Antennae 15 to 17 segments, dark brown upper jaw, sickle-shaped, with 1 distinct tooth in the middle of the medial side of the left upper jaw, and degeneration of the right upper jaw tooth into a mark. The feet are pale yellow. (2) Winged adults. The body length is 12 to 14 mm, and the wing length is 24 to 25 mm. The head, chest, and dorsal area of the abdomen are dark brown. The whole body is densely covered with fine hairs. The head is rounded, and the compound and single eyes are slightly oval. Compound eyes dark brown. One eye orange yellow. The dorsal plate of the anterior thorax is slightly narrower than the head, there is no obvious absence in the center of the leading edge, and the middle of the posterior edge is recessed forward. There is a pale " ten " hue in the center of the dorsal plate of the forethia , an oval pale dot in front of each side of the stripe , and a branched pale dot in the center of the posterior back of the stripe , with forewing scales larger than the hindwing scales. (3) Queen Ant and Ant King. It is formed by the winged adults being paired by flying separately, in which the female of the mate is the queen ant and the male is the ant king. The queen's abdomen gradually swells over time, reaching 70-80 mm in length and 13–15 mm in width. The queen's cephalothorax is similar to that of winged adults, but it is darker in color and has a stiffer body wall. The web and dorsal plates of the abdominal segments remain in their original color and size. The extended internodes and lateral membranes are milky white, with many dark reddish-brown dots on the lateral membranes. The king is similar in form to the winged adult, but darker in color, with a stiffer body wall and slightly constricted body shape. (4) Worker ants. Body length 5-6mm. The head is yellow, and the thorax and abdomen are grayish white. Posterior lateral edge of the head, circularly curved. It is located in the center of the head and has a small circular depression. The antennae are 17 sections, and section 2 is longer than section 3.
[Life Habits]
The "social" division of labor of black-winged earth termites is obvious. Its main nest is built in soil 0.8-3 m deep. The proportion of worker ants in the population is 90%. All the work in the nest such as nest building, road construction, termite breeding, food hunting, etc. are undertaken by worker ants. The number of soldier ants is second only to that of worker ants, and they are the defenders of the nest group, ensuring that the colony is not invaded by other invincibles. Whenever an enemy is encountered, the ant attacks with a powerful palate and can secrete a yellow-brown liquid to ward off foreign enemies. Winged adults appear in nests in March and on the ground near nests in April and June. Each nest has 1 or more colonies, with waiting rooms under the feathering holes. The waiting room is 3-8 m away from the main nest. On rainy days when the temperature is higher than 20 °C and the relative humidity is higher than 85%, the winged adults fly around 19:00, and after the divergence, the winged adults generally burrow into the ground in pairs to establish a new nest. Worker ants are very heterogeneous. Sugarcane has two peaks of exposure during germination and mid- to late growth. The eyes of the worker ants and soldier ants of the black-winged earth termite have degenerated, and they are photophobic when they are active, so when they eat food on the ground, they must use mud to build dirt roads and mud as a cover. However, winged adults are not afraid of light, and have strong phototropism when flying.