Published January 9, 2026 | Version v1
Taxonomic treatment Open

Ophiomyia galiodes Lonsdale

  • 1. 276 Old Wendell Rd., Northfield, MA 01360, U. S. A. ceiseman @ gmail. com; https: // orcid. org / 0000 - 0001 - 5496 - 9114
  • 2. Agriculture and Agri-Food Canada, 960 Carling Avenue, Ottawa, ON, Canada K 1 A 0 C 6. Owen. Lonsdale @ agr. gc. ca; https: // orcid. org / 0000 - 0001 - 7034 - 3330
  • 3. 5306 Pelham Road, Durham, NC 27713, U. S. A. tracysfeldman @ yahoo. com; https: // orcid. org / 0000 - 0001 - 5939 - 6810
  • 4. 276 Old Wendell Rd., Northfield, MA 01360, U. S. A. ceiseman @ gmail. com; https: // orcid. org / 0000 - 0001 - 5496 - 9114 & 1815 Whitetail Rd., Decorah, IA 52101, U. S. A. johnbvdl @ gmail. com; https: // orcid. org / 0000 - 0003 - 2651 - 0634 * Corresponding author. ceiseman @ gmail. com & 276 Old Wendell Rd., Northfield, MA 01360, U. S. A. ceiseman @ gmail. com; https: // orcid. org / 0000 - 0001 - 5496 - 9114

Description

Ophiomyia galiodes Lonsdale

(Figs. 32, 136, 137)

Material examined. IOWA: Winneshiek Co., Decorah, Trout Run Trail, 9–13.vii.2021, em. 28.viii.2021, J. van der Linden, ex Galium, #JBV2225, CNC1990673 (1♂); Van Peenan Park, 21.viii.2021, em. by 30.viii.2021, J. van der Linden, ex Galium boreale, #JBV2223, CNC5172384 (1♀).

Photographed mines. CONNECTICUT: Litchfield Co., Norfolk, Aton Forest, 42.018114, −73.144608, 18.x.2023, C.S. Eiseman, mine on Galium asprellum (iNat 195125085); IOWA: Winneshiek Co., Decorah, Ice Cave Rd., 15.i.2021, J. van der Linden, mine with black puparium on Galium (BG 1931837); MASSACHUSETTS: Hampden Co., Monson, 42.061706, −72.275667, 5.x.2023, C.S. Eiseman, mine with black puparium on Galium mollugo (iNat 205101185); NEW YORK: Putnam Co., Kent, Huestis Town Park, 41.49236, −73.760266, 7.ix.2022, C.S. Eiseman, mine with black puparium on Galium mollugo (iNat 134116458); OHIO: Fairfield Co., Madison Twp., 39.600467, −82.661467, 23.xi.2023, C.S. Eiseman, mine with black puparium on Galium circaezans (iNat 191897579); VERMONT: Windham Co., 43.146319, −72.569864, 4.x.2025, C.S. Eiseman, larva mining Galium circaezans, formed black puparium by next day (iNat 323804641).

Hosts. Rubiaceae: [Galium asprellum Michx.], G. *boreale L., [G. circaezans Michx., G. mollugo L.] (Lonsdale 2021).

Larval biology. (Figs. 136, 137) The larva mines up and down the stem between two nodes, producing a grayish blotch that surrounds the stem, leaving the green core intact.

Puparium. (Fig. 32) Whitish; formed just beneath the stem epidermis, with the anterior spiracles protruding. The overwintering puparia we have seen were black, but they proved to be parasitized, so this may or may not be the normal color.

Phenology and voltinism. At least bivoltine, with pupae overwintering. The type series emerged from presumably overwintered puparia on 16 April in Maryland (Lonsdale 2021), and mines collected in Iowa from early July to late August yielded adults in late August. A larva presumed to represent this species was observed feeding on 4 October in Vermont, pupating by the next day.

Distribution. USA: [CT], *IA, [MA], MD, [NY, OH, VT] (Lonsdale 2021).

Comments. A male Brasema Cameron (Eupelmidae) (CSE7843, CNC) emerged on 14 or 15 September 2022 from one of the puparia collected in New York.

Notes

Published as part of Eiseman, Charles S., Lonsdale, Owen, Feldman, Tracy S. & Linden, John Van Der, 2026, Thirty-three new species of Agromyzidae (Diptera) from the United States and Canada, with new host and distribution records for 154 additional species, pp. 1-265 in Zootaxa 5745 (1) on pages 54-55, DOI: 10.11646/zootaxa.5745.1.1, http://zenodo.org/record/19166946

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Linked records

Additional details

Biodiversity

Collection code
BG , CNC
Material sample ID
BG 1931837 , CNC1990673 , CNC5172384
Event date
2021-01-15 , 2021-07-09 , 2021-08-21 , 2022-09-07 , 2023-10-05 , 2023-10-18 , 2023-11-23 , 2025-10-04
Verbatim event date
2021-01-15 , 2021-07-09/08-28 , 2021-08-21/30 , 2022-09-07 , 2023-10-05 , 2023-10-18 , 2023-11-23 , 2025-10-04
Scientific name authorship
Lonsdale
Kingdom
Animalia
Phylum
Arthropoda
Order
Diptera
Family
Agromyzidae
Genus
Ophiomyia
Species
galiodes
Taxon rank
species