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The scientific name *Teleogryllus emma* (Ohmachi & Matsuura) belongs to the order Orthoptera and family Gryllidae. It was previously known as *Gryllus mitratus* Burmeister. This species is widely distributed across the country.
**Host Plants**
This cricket is a polyphagous pest that can damage a wide range of crops, including soybeans, mung beans, sesame, peanuts, sweet potatoes, potatoes, corn, sorghum, millet, cotton, wheat, sugarcane, tea, mulberry, and rapeseed. In large numbers, they can also cause damage to clothing and stored food products.
**Damage Symptoms**
The primary damage is caused by feeding on leaves, creating irregular holes or notches. They may also feed on flowers and root systems, which can weaken or even kill young plants.
**Morphological Features**
Male crickets measure 22–24 mm in length, while females are slightly larger, ranging from 23–25 mm. The body color is dark brown with a black head. The compound eyes are surrounded by an orange-yellow ring, forming an "eight" shape when viewed from behind. The pronotum is dark brown, with faint dark brown markings resembling horns. The side panels of the thorax are dark, with an orange-yellow lower front corner. The middle part of the mesothoracic web has a small central notch.
The male forewings are dark brown and shiny, ending in a rectangular mirror-like structure. The leading edge is slightly curved, and the mirror contains cross veins that divide it into two sections. The end net area has several longitudinal and transverse veins, forming small chambers. There are four oblique veins, with the first two being short. The sub-vein has six branches. The hind wings are long and extend beyond the abdomen. The hind legs have 5–6 pairs of long spines, with the base segment longer than the middle and end segments. The female's ovipositor is longer than the femoral section of the hind leg.
**Habitat and Behavior**
This species completes one generation per year. Eggs overwinter in the soil and hatch into nymphs in April or May of the following year. After six molts, adults emerge between May and August. Adults mate and lay eggs from September to October. Females lay 34–114 eggs in the soil, typically 2 cm deep, in weedy areas, fields, or graveyards. Both adults and nymphs are nocturnal, foraging and mating at night. Adults are attracted to light.
**Control Methods**
(1) **Toxic Bait Traps**: During the seedling stage, mix 50% phoxim EC (50–40 ml per 667 m²) with 30–40 kg of fried maimaifu, soybean cake, or cottonseed cake, then apply the mixture to the field. Alternatively, mix 50% phoxim EC (50–60 ml) with 75 kg of fine soil and use it as a bait. This method achieves over 90% effectiveness. Apply the bait starting from the edges of the field and work inward.
(2) **Light Trapping**: Use light traps to capture adult crickets, especially during their active hours at night.