Stem borer (Diptera: Agromyzidae) in Cryptotaenia

Record Details

Record no.:	0179
Feeding guild:	Stem borer
Taxonomy:	Diptera: Agromyzidae: Melanagromyza eoflacensis
Stages observed:	trace, puparium, adult
Hosts in Cryptotaenia:	C. canadensis (honewort)

The puparium of this borer is formed in the lower stem and passes the winter there; adults emerge in spring. The small posterior spiracular plates of the puparium are moderately sclerotized to a brown color, and the horns on the plates are very short, bordering on indistinct without high magnification. Identified as M. eoflacensis in Eiseman et al. (2026), where some of the information on this page is also included.

Featured Images

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Image #: 179-01 Puparium in stem. (larger version) (Photo date: October 18, 2021)

Image #: 179-03 Posterior spiracles of puparium from previous image (0179-02).

Image #: 179-04 Puparium in stem. (Photo date: March 6, 2021)

Image #: 179-06 Posterior spiracles of puparium from previous image (0179-05).

Image #: 179-07 Puparium in stem. (Photo date: March 6, 2021)

Image #: 179-08 Posterior ends of several puparia recovered from dead stems of the host in winter. (Photo date: March 6, 2021)

Image #: 179-09 Reared adult. (larger version) (Photo date: March 27, 2022)

Image #: 179-10 Reared adult. (larger version)

Image #: 179-13 Reared adult, lateral view. (larger version)

Image #: 179-16 Reared adult. (Photo date: March 18, 2020)

Specimen Data for Images

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Coll. 10/18/21, photos same day (01-03); coll. 03/06/21, photos same day (04-08); coll. 03/08/22, adult em. 03/26/22, photos of adult on 03/27/22 (09-13); coll. 10/18/20, photographed 09/17/21 (14); coll. 12/08/19, adult em. 03/18/20, photo of adult same day (16).

References

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Eiseman, C.S., Lonsdale, O., Feldman, T.S., and J. van der Linden. 2026. Thirty-three new species of Agromyzidae (Diptera) from the United States and Canada, with new host and distribution records for 154 additional species. Zootaxa 5745(1): 1-265.[return to in-text citation]

Page created: November 30, 2023. Last update: March 10, 2026