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Photo#1621184
Stem borer, Angelica - Melanagromyza

Stem borer, Angelica - Melanagromyza
Steve's Place, Fillmore County, Minnesota, USA
August 18, 2018
18 August 2018 The current year's tall, hollow flowering stalks of Angelica atropurpurea have already gone to seed, and the plant is busy sprouting fresh green fall growth from the ground at the base of the stalks. There are tunnels through the pithy inner lining of the hollow stalks, with agromyzid fly puparia associated

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Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza Stem borer, Angelica - Melanagromyza

Most likely Melanagromyza angelicae Frost
Please see species account (p. 24, p. 243) and illustration (p. 346) in (1)

From p. 24:
"M. angelicae (Frost)...Host/Early Stages. Angelica atropurp├║rea, probably other Angelica spp. Larva feeding and pupating in stem; puparium whitish, posterior spiracles widely separated, each with ellipse of some 16-20 bulbs around strong central horn (fig. 55)."

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