Beans oil gourd

Scientific name Teleogryllus mitratus (Burmeisteir) Orthoptera, Polygonaceae. Alias ​​black pheasant, brown moth 蟀. Synonyms Gryllus testaceus Walker. Distributed in Guangdong, Guangxi, Yunnan, and Taiwan.

The host beans, melons, cabbage, radish, carrots, spinach and other vegetables.

Characteristics of adult worms and nymphs, young larvae and tender larvae.

Morphological characteristics The adult body is about 20mm in length with dark brown on the back, shiny and light belly; the head and chest width are equal, and the yellow eyes are connected between the two compound eyes; there is a moon on both sides of the central longitudinal groove of the pronotum. . Teeth, here smooth and glabrous; forewing approximately equal length with the abdomen, hind wings developed, the tip protrudes rearward as the tail; the posterior temporomandibular section has 6 pairs of thorns; tail hair extra long, almost equal length with the leg section. The eggs are long, milky white, slightly yellowish, and have a smooth surface. Nymphs resemble adults, with no wings or only wing buds.

Living habits occur mostly in eastern China. One generation a year, wintering with eggs in the earth. In late spring, May was hatched as a nymph, with a total of 6 instars. In July-August, adults became active. From late September to early October, females lay eggs at the camping earthen acupoints, which are prolific in the sunny sections of rivers, ditches, ridges, cemeteries, and other weeds, and are about 2-4 cm deep. Each female produces 34-114 eggs. Adults live for more than 200 days, but die 1-8 days after spawning. The male insects sing to attract females to copulate and fight and kill each other. Chang Chi points live with females. Nymphs and adults usually stay in dark places, but they also fly toward the lights at night. Omnivorous, but particularly like crops with oily and aroma, such as soybeans, sesame seeds.

Control methods (1) poison bait trapping first 60 to 70 °C hot water to dissolve 90% trichlorfon crystals into 30 times (50g medicine to 1.5L of hot water), each L dissolved in the liquid mixture of 30 one 50kg of sauteed wheat bran or bean cake, cottonseed cake, must be fully watered when mixed (for a l-1.5 times the weight of the bait). You can use the hand to dip a little water and then apply it to the field. (2) Light trapping adults.

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