Spotted wing drosophila

Drosophila suzukii

Drosophila suzukii adults are small (3–4 mm) yellowish-brown flies with red eyes. The adults have a pale brown or yellowish-brown thorax with black bands on the abdomen. The antennae are short and stubby with branched arista. Males have a distinguishing dark spot along the front edge of each wing. Spotless males are also possible, but are rarely observed in the field and should be verified by a taxonomist for positive identification. In addition, males have two rows of combs on each fore tarsus which are absent in females.
Eggs: The eggs are translucent, milky-white, and glossy. The eggs develop and hatch within the fruit in which they are laid.
Larvae: The larvae are milky-white and cylindrical with black mouthparts. The body is tapered anteriorly with elevated posterior spiracles. First instar larvae are approximately 0.07 mm in length. Internal organs of larvae are visible after it has consumed some fruit. Larval development occurs inside the fruit and develops through three instars before pupation. Mature larvae may grow up to 6 mm in length.

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