The genus Zauzera sp., commonly known as the cutworm or six-spotted moth, belongs to the order Lepidoptera and the family Noctuidae. This pest is widely distributed across provinces such as Hebei, Henan, Shandong, and Shaanxi in China. It primarily affects walnut and jujube trees, but it can also damage apples, apricots, pears, pomegranates, and even hedges. The most severe damage occurs on jujube trees, where the larvae feed on the growing tips, preventing the canopy from expanding. As a result, the tree remains small and stunted throughout the year, significantly reducing fruit yield. Infestations are characterized by ring-shaped tunnels between the xylem and phloem at the base of the tree, with upward-facing feeding trails. On branches, you'll often find multiple excrement holes filled with long, oval-shaped frass. The upper parts of the affected branches turn yellow and become weak, making them prone to breaking in the wind. Larvae typically infest 1- to 2-year-old branches, causing the tips to wither and collapse easily under strong winds. Adults: Female moths measure 18–20 mm in body length with a wingspan of 35–37 mm, while males are slightly larger, measuring 18–22 mm with a wingspan of 34–36 mm. They have three pairs of dark blue spots on the thorax and black-and-blue markings along the abdomen. The wings are gray with scattered dark blue spots of varying sizes. Eggs: Initially pale apricot-yellow, they feature a reticulated pattern when first laid. Larvae: These have a brown head, black markings around the eyes and on the upper eyelids, and a reddish-purple body covered in brown hairs. The prothorax is wide, with one pair of cotyledon-shaped black spots on the front, and four rows of small black spines along the posterior edge. The larval body ends with a black anal plate. Mature larvae reach lengths of 32–40 mm. Pupae: Brownish auburn in color, measuring 25–28 mm in length. Two black round spots appear on each abdominal segment near the time of pupation. Life Cycle: The Zauzera sp. completes one generation per year. Mature larvae overwinter inside infested branches. In April to May of the following year, adults emerge and females lay more than a thousand eggs. Newly hatched larvae bore into the main vein or base of buds, creating fecal holes from top to bottom. A single larva can damage two or three shoots. The larvae continue feeding until mid-October, then enter dormancy within the branches. Control Methods:
1. During spring, from April to early June, when overwintering larvae become active, inspect jujube orchards for dead shoots or wilted branches—signs of infestation. Cut and remove the damaged branches using a pair of sorghum shears, then burn them thoroughly. This critical task must be completed before June to effectively control the population.
2. In September, when young larvae are most active, conduct another round of branch cutting and burning to destroy infested areas and reduce the number of pests.
3. For chemical control, apply 80% dichlorvos EC diluted at 1,000 times during adult egg-laying and hatching periods. This helps prevent further infestation and protect crops from damage. Lithium Methoxide CAS No.865-34-9 Lithium Methoxide Basic Information
Mol File: 865-34-9.mol
Lithium Methoxide Structure
Stability: Stable, but reacts violently with water. Highly flammable. Store under dry inert gas.
Lithium Methoxide Application
For organic synthesis reactions such as lipid exchange. Lithium Methoxide,Lithium Methoxide Solution,Lithium Methoxide Formula,Lithium Methoxide Density,Lithium Methoxide Reaction Shandong YingLang Chemical Co.,Ltd , https://www.sdylhgtrade.com
CAS: 865-34-9
MF: CH3LiO
MW: 37.97
EINECS: 212-737-7
Melting point 500°C
Boiling point 64.6 °C
density 0.85 g/mL at 20 °C
Fp 52 °F
storage temp. Flammables area
solubility Soluble in methanol.
form powder
color White
Sensitive Moisture Sensitive