Mole Crickets
Gryllotalpidae
📖 Description
Mole crickets are among the most unusual-looking and destructive turfgrass pests, combining the tunneling ability of moles with the feeding habits of crickets. Their powerful front legs allow them to tunnel through soil at remarkable speed, pushing up ridges of soil that disfigure lawns and damage plant roots. They feed on grass roots, stems, and organic matter in the soil, and can kill large patches of lawn if populations are high. The tawny mole cricket and southern mole cricket are the most damaging species in the southeastern United States, where they were accidentally introduced from South America. Their damage is most severe in sandy soils, where tunneling is easier, and in irrigated lawns where the soil stays moist. Control is challenging because they spend most of their time underground, protected from surface-applied treatments.
⚠️ Symptoms to watch for
- Raised ridges or tunnels of pushed-up soil on lawn surface,Spongy, loose patches of turf that feel soft underfoot,Dead or dying patches of grass with no apparent disease,Seedlings uprooted or severed at the soil line,Root damage on vegetable transplants and ornamental plants,Small mounds of soil pushed up from tunneling activity
🩹 Treatment
- Apply beneficial nematodes (Steinernema scapterisci) to infested areas (organic),Use mole cricket bait containing spinosad (organic),Apply insect-parasitic fungi (Beauveria bassiana) (organic),Flush from tunnels with a soapy water drench and hand-collect (organic),Apply imidacloprid or bifenthrin granules to lawn (chemical),Use fipronil bait applied in early evening (chemical)
🌿 Organic treatments
- Apply beneficial nematodes (Steinernema scapterisci) to infested areas,Use mole cricket bait containing spinosad,Apply insect-parasitic fungi (Beauveria bassiana),Flush from tunnels with a soapy water drench and hand-collect
🧪 Chemical treatments
- Apply imidacloprid or bifenthrin granules to lawn,Use fipronil bait applied in early evening
🛡️ Prevention
- Reduce thatch buildup in lawns which provides tunneling habitat,Avoid overwatering which softens soil and makes tunneling easier,Encourage natural predators like birds, armadillos, and raccoons,Apply beneficial nematodes preventively in spring,Monitor with soap flush test (2 tablespoons dish soap in 2 gallons water) to detect activity,Reduce outdoor lighting which attracts flying adults
🪴 Affected plants
- Lawns,Turfgrass,Vegetable Seedlings,Tomatoes,Peppers,Root Vegetables,Ornamental Plants
🦋 Natural predators
- Birds,Raccoons,Skunks,Parasitic Wasps
🌱 Host plants
- Various turf grasses,Vegetable seedlings
🔄 Lifecycle
- Adults mate and lay 25-60 eggs in underground chambers in spring.
- Eggs hatch in 3-4 weeks.
- Nymphs develop through 8-10 instar stages over 3-4 months.
- In southern areas, adults are active year-round.
- In northern areas, they overwinter as adults or large nymphs deep in the soil.
- One generation per year in most areas.
- Adults are strong fliers and attracted to lights, often flying during warm, humid evenings in spring.
- They can travel several miles to new feeding areas.
📅 Season
- Spring to Fall (most active during warm, moist conditions)
🔎 Appearance
- Large, brown, cylindrical insects with mole-like front legs modified for digging.
- Their forelegs are broad and paddle-shaped with finger-like projections, adapted for tunneling through soil.
- They have beady eyes and their wings are held flat over their body.
- When they fly, they are attracted to lights.
💥 Damage level
- Moderate
🔁 Reproduction rate
- Moderate
🗺️ Geographic regions
- North America
- South America
- Asia
- Australia
Have an Insect to Identify?
Upload or take a photo of an insect on your plant and our AI will identify it and recommend treatments.
📷 Diagnose from Image