Mostly yellowish-brown in colour; A. ludens, is typical in appearance to other members of the genus Anastrepha, but notable for the female's long ovipositor and sheath relative to its body size -the ovipositor is 3.35-4.7 mm long; wing band colour pale yellow, width of S-band narrow apically, not extending to medial vein, and colour of thoracic setae uniformly pale.
Source:
http://creatures.ifas.ufl.edu/fruit/tropical/mexicanfruitfly.htm
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