{"id":17229,"date":"2026-03-12T09:55:06","date_gmt":"2026-03-12T09:55:06","guid":{"rendered":"https:\/\/spiderzoon.com\/insects\/?p=17229"},"modified":"2026-03-12T09:55:08","modified_gmt":"2026-03-12T09:55:08","slug":"ten-lined-june-beetle","status":"publish","type":"post","link":"https:\/\/spiderzoon.com\/insects\/ten-lined-june-beetle\/","title":{"rendered":"Ten Lined June Beetle: Identification, Life Cycle, Habitat & Control"},"content":{"rendered":"\n

The ten lined June beetle<\/strong> (Polyphylla decemlineata<\/em>) is a large and distinctive insect commonly found in parts of North America. Known for its bold striped wings and loud buzzing flight, this beetle often attracts attention during early summer evenings. While the adult beetles are mostly harmless, their underground larvae can sometimes damage plant roots. Understanding the beetle\u2019s appearance, habitat, and life cycle can help gardeners and homeowners identify and manage this fascinating insect.<\/p>\n\n\n\n

What Is a Ten Lined June Beetle?<\/strong><\/h2>\n\n\n\n

The ten lined June beetle belongs to a group of beetles known as scarabs<\/strong>, which includes many species that play important roles in ecosystems.<\/p>\n\n\n\n

Scientific Classification<\/strong><\/h3>\n\n\n\n

The beetle\u2019s scientific classification helps place it within the broader insect family:<\/p>\n\n\n\n

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  • Kingdom:<\/strong> Animalia
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  • Phylum:<\/strong> Arthropoda
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  • Class:<\/strong> Insecta
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  • Order:<\/strong> Coleoptera
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  • Family:<\/strong> Scarabaeidae
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  • Genus:<\/strong> Polyphylla
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  • Species:<\/strong> Polyphylla decemlineata<\/em>
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    Like other scarab beetles, this species has a hard outer shell and strong legs designed for digging in soil<\/strong>.<\/p>\n\n\n\n

    Origin of the Name<\/strong><\/h3>\n\n\n\n

    The name \u201cten lined June beetle\u201d<\/strong> comes from two main features:<\/p>\n\n\n\n

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    1. Ten white stripes<\/strong> that run lengthwise along the beetle\u2019s wing covers (elytra).
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    2. Their appearance in June or early summer<\/strong>, when adult beetles emerge from the soil.
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      Because of their striped pattern, they are sometimes mistaken for other large beetles, but the distinctive lines and size<\/strong> make them relatively easy to identify.<\/p>\n\n\n\n

      Ten Lined June Beetle Identification<\/strong><\/h2>\n\n\n\n
      \"Ten<\/figure>\n\n\n\n

      Correct identification is important because many beetles look similar. The ten lined June beetle has several characteristics that make it stand out.<\/p>\n\n\n\n

      Physical Appearance<\/strong><\/h3>\n\n\n\n

      The beetle\u2019s body is typically dark brown or black<\/strong>, with bold white or cream-colored stripes<\/strong> across the wing covers. These stripes give the insect a unique and easily recognizable appearance.<\/p>\n\n\n\n

      Its body is thick and oval-shaped<\/strong>, and the hard outer wings protect the delicate flight wings underneath. The beetle\u2019s legs are strong and slightly spiny, allowing it to dig through soil during its early life stages.<\/p>\n\n\n\n

      Size and Shape<\/strong><\/h3>\n\n\n\n

      One of the easiest ways to identify the ten lined June beetle is its large size<\/strong>.<\/p>\n\n\n\n

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      • Length: about 1 to 1.5 inches (2.5\u20134 cm)<\/strong>
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      • Body shape: oval and heavy<\/strong>
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      • Appearance: robust and solid<\/strong>
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        Because of its size, it is often one of the largest beetles people encounter in gardens or outdoor areas<\/strong>.<\/p>\n\n\n\n

        Unique Features<\/strong><\/h3>\n\n\n\n

        Several unique features help distinguish this beetle from other insects:<\/p>\n\n\n\n

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        • Fan-shaped antennae<\/strong> that can open like small fans
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        • Loud buzzing sound<\/strong> during flight
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        • Nocturnal behavior<\/strong>, with activity mostly at night
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        • Ability to produce a hissing sound when disturbed<\/strong>
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          These characteristics make the ten lined June beetle both fascinating and easy to recognize.<\/p>\n\n\n\n

          Ten Lined June Beetle Habitat<\/strong><\/h2>\n\n\n\n
          \"Ten<\/figure>\n\n\n\n

          The ten lined June beetle prefers environments where the soil is suitable for its larvae to develop.<\/p>\n\n\n\n

          Geographic Distribution<\/strong><\/h3>\n\n\n\n

          This beetle is primarily found in western North America<\/strong>, including regions such as:<\/p>\n\n\n\n

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          • The western United States
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          • Parts of Canada
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          • Areas with dry or sandy soils
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            It is especially common in California, Washington, Oregon, and neighboring regions<\/strong>.<\/p>\n\n\n\n

            Preferred Environment<\/strong><\/h3>\n\n\n\n

            Ten lined June beetles thrive in areas where the soil allows their larvae to grow underground. Common habitats include:<\/p>\n\n\n\n

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            • Sandy or loose soil areas<\/strong>
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            • Grasslands and agricultural fields<\/strong>
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            • Forest edges<\/strong>
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            • Home gardens and lawns<\/strong>
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              Because the larvae live in soil for long periods, locations with healthy plant roots<\/strong> often attract these beetles.<\/p>\n\n\n\n

              Ten Lined June Beetle Life Cycle<\/strong><\/h2>\n\n\n\n
              \"Ten<\/figure>\n\n\n\n

              Like many beetles, the ten lined June beetle undergoes complete metamorphosis<\/strong>, meaning it passes through four distinct stages: egg, larva, pupa, and adult.<\/p>\n\n\n\n

              Egg Stage<\/strong><\/h3>\n\n\n\n

              The life cycle begins when female beetles lay eggs in the soil<\/strong> during early summer. These eggs are usually placed several inches below the surface to protect them from predators and environmental conditions.<\/p>\n\n\n\n

              After a short incubation period, the eggs hatch into larvae.<\/p>\n\n\n\n

              Larval Stage (Grubs)<\/strong><\/h3>\n\n\n\n

              The larval stage is the longest part of the beetle\u2019s life cycle<\/strong>. The larvae, commonly called white grubs<\/strong>, live underground and feed mainly on plant roots<\/strong>.<\/p>\n\n\n\n

              These grubs have:<\/p>\n\n\n\n

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              • Soft white bodies
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              • Curved shapes
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              • Brown heads
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              • Strong jaws for feeding
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                The larval stage can last two to three years<\/strong>, during which the grubs gradually grow larger while feeding beneath the soil.<\/p>\n\n\n\n

                Pupal Stage<\/strong><\/h3>\n\n\n\n

                After spending several years developing as grubs underground, the larvae eventually enter the pupal stage<\/strong>. During this stage, the insect stops feeding and begins transforming into an adult beetle.<\/p>\n\n\n\n

                The pupa forms within a protective chamber in the soil<\/strong>, where the larva undergoes major internal changes. Its body gradually reshapes as wings, legs, and the hard outer shell develop.<\/p>\n\n\n\n

                This stage typically lasts a few weeks<\/strong>, depending on environmental conditions such as soil temperature and moisture. When the transformation is complete, the adult beetle prepares to emerge from the soil.<\/p>\n\n\n\n

                Adult Stage<\/strong><\/h3>\n\n\n\n

                Adult ten lined June beetles usually emerge in late spring or early summer<\/strong>, often around June. This is the time when people most commonly notice them flying around outdoor lights or gardens.<\/p>\n\n\n\n

                Adult beetles are primarily nocturnal<\/strong>, meaning they are most active during the night. During the day, they usually hide in vegetation, soil, or debris to avoid predators.<\/p>\n\n\n\n

                Although they can fly, their flight is often slow and clumsy<\/strong>, producing a loud buzzing sound that can easily be heard. The adult stage is relatively short compared to the larval stage, usually lasting only a few weeks to a couple of months<\/strong>.<\/p>\n\n\n\n

                Diet of the Ten Lined June Beetle<\/strong><\/h2>\n\n\n\n
                \"Diet<\/figure>\n\n\n\n

                The feeding habits of the ten lined June beetle vary depending on the stage of its life cycle.<\/p>\n\n\n\n

                Adult Feeding Habits<\/strong><\/h3>\n\n\n\n

                Adult beetles typically feed on the leaves of trees and shrubs<\/strong>. Some common plants they may feed on include:<\/p>\n\n\n\n