
Appearance
The body is black with pale colored pile and legs that are predominantly rufous. Females have black wings. The size of the species varies considerably, with wingspans ranging from 5.5 to 9.5 mm and body lengths ranging from 8 to 11 mm. The maggots, which feed on roots, are 10 mm in length with warty skin and a pair of posterior spiracles.References:
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