Description of the insect

 

  • The adult (figure 1) of Byctiscus betulae measures between 4 and 7 mm in length. It has a stocky appearance and is variable in color (coppery green, coppery purple or blue). It has a broad elytron (hardened and horny fore wings), a short rostrum and straight antennae.
  • The eggs (figure 2)  are light white, opaque, then they tend to turn yellow. They have an ovoid shape and measure 0.5 mm.
  • The larvae white are legless and soft. They have a brown to black chitinous head and measure at the end of their development between 5 and 6 mm long.
Last change : 04/20/21
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Figure 1
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Figure 2
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Figure 3
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Figure 4
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