Melanagromyza sp. 1

Material examined. IOWA: Winneshiek Co., Lake Meyer Park, 28.xi.2017, em. spring 2018, J. van der Linden, ex Cryptotaenia canadensis, # CSE4651, CNC1135658 (1♀) .

Host. Apiaceae: Cryptotaenia canadensis (L.) DC.

Larval biology. Internal stem borer.

Puparium. Formed within the stem.

Phenology and voltinism. Pupae overwinter, with adults emerging in spring.

Distribution. USA: IA.

Comments. The only previous record of an agromyzid from this host is a leaf mine of an unidentified Phytomyza species collected in Montreal, QC, listed by Spencer (1969), who did not describe the mine in any way. The only dipteran leafminer that has been reared from Cryptotaenia is Euleia fratria (Loew) (Tephritidae), and it does not seem impossible that its mine could have been mistaken for that of a Phytomyza .