Scientific name Alissonotμm impressicolle Arrow is a Coleoptera, Rhinocerosidae. Alias ​​abruptly of cane tortoiseshell, black beetle, Taiwan called black round cane turtle, hidden black gold tortoiseshell and so on. Distribution of Fujian, Taiwan, Guangdong, Guangxi, Guizhou and so on.
Host sugar cane, corn, sorghum, drought-affected rice or upland rice.
The culprit eats the base of sugar cane and causes dead heart. The 1-3 instar larvae feed on the cane roots and form holes in the underground, where the wind easily falls.
Morphological characteristics Adult body length 15-18mm, chest width 7.1-9.0mm, when the initial feathering is light yellow, later turned black, shiny. Ventral surface, dark brown foot. There was a slight stipple on the pronotum, and the engraved dots on the elytra formed eight vertical lines. Egg length 2.3mm, long oval to round, milky to grayish white. The third instar larvae have a body length of 19-23 mm, a light yellow head and feet, a pale yellowish white belly, and a blue posterior portion. Naked mane is 18-26mm long, light yellowish brown.
Living habits Guangdong, Taiwan, 1 generation. Adults temporarily stay in the dorm after being feted in March-April, and are generally unearthed from April to May. They stay around the cane head during the day and perform activities at night. Adults like to mate in the soil and produce eggs in the soil in the rhizosphere of the cane head from late August to November. The larval duration is 144-178 days. Adults have strong tropism towards black light and ultraviolet light. The sooner or later, the amount of this insect is related to the rainfall time and rainfall.
Prevention methods (1) Promote the rotation with peanuts, sweet potatoes, jute, mulberry, etc. to reduce the dry heart rate. (2) Deep plowing of 26-33cm during larvae can expose larvae and larvae to the surface or kill them directly. (3) In the vicinity of the cane head, open loose soil 3-7cm to capture adult larvae. (4) In late April and early June, black light traps the adult. (5) In May when the adult insects bloomed, the water was allowed to flow over the surface for 10 minutes to drive adult or drown larvae. (6) Apply 3% Kebuwei granules 3-4kg or 3% methyl isoparisis granules 4-5kg per 667m2 when sowing to cover the soil after the cane ditch. (7) For every 667m2, use 90% crystal trichlorfon 0.5kg or 50% phoxim 0.5 to 0.75kg, and water 1000 to 1500kg to shower sugarcane seedlings.
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