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Species Myelopsis subtetricella - Hodges#5718

1772a Myelopsis subtetricella - Acorn Moth 5718 - Myelopsis subtetricella Myelopsis subtetricella Pyralid - Myelopsis subtetricella Pyralid - Myelopsis subtetricella Myelopsis subtetricella Myelopsis subtetricella Myelopsis subtetricella Myelopsis subtetricella
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Pyraloidea (Pyralid and Crambid Snout Moths)
Family Pyralidae (Pyralid Moths)
Subfamily Phycitinae
Tribe Phycitini
No Taxon (Euzophera Series)
Genus Myelopsis
Species subtetricella (Myelopsis subtetricella - Hodges#5718)
Hodges Number
Other Common Names
Sometimes referred to as an Acorn Moth, which conflicts with the name more commonly used for Blastobasis glandulella
Synonyms and other taxonomic changes
Myelopsis subtetricella (Ragonot, 1889)
Myelois subtetricella Ragonot, 1889
Myelois obnupsella Hulst, 1890 (1)
Myelois zonulella Ragonot, 1889
* Phylogenetic sequence #800205.
Explanation of Names
'sub' is Latin for "under", "below" or "beneath". 'tetricella' is after Myelois tetricella (or Myelopsis tetricella or Episcythrastis tetricella), a European moth first described in 1775.
Latin: tetricella = tetri (stinking) + cella (cell, room)
Four Myelopsis species are found in America north of Mexico.
WS 19-22mm
TL 11-12mm
Original description:
"19 — 22 mm. Fore wings elongate, oval, very narrow at base, strongly rounded on costa, dark gray, much suffused with brownish, glossy, first line broad, oblique, straight, gray, indistinct, edged outwardly by a shadowy blackish line, second line hardly perceptible, oblique, straight, very narrow, hardly paler than ground color. A dark spot, hardly distinct on disk. Hind wings transparent whitish, smoked on margin. Very near to tetricella."
Eastern Colorado north to southern Alberta and east to Nova Scotia. (2)
From Canada through the US, as far south as Southern California and Florida. (dubious - no citation)
Moth Photographers Group – distribution & flight-period chart
Late April to late July.(2)
Have been reported feeding on acorns.
Neunzig (1990) gives the range for this species as no further west than southern Alberta, Nebraska and Colorado. He shows 2 adult images, both very lightly marked as in Tom Murray's MA specimens. The very heavily marked individuals on BG are from CA which doesn't fit the range of subtetricella; I suspect these CA species are not subtetricella. - comment by A.W. Thomas
As of 3/23/2020, some barcoded specimens at BOLD appear to refer to Laetilia zamacrella. See comments here. The rest may represent a species an unknown species as they are all from locations west of the Rockies. - Steve Nanz
See Also

Laetilia zamacrella is found in California. Specimens have apparently been misidentified as Myelopsis subtetricella.
Print References
Neunzig, 1990. Moths of America North of Mexico, Fascicle 15.3: 35; pl. 1.15-16.(2)
Ragonot, E. L. 1889. Pycitidae and Galleriidae of North America. Some new species and a general catalogue. Entomologica Americana. 5(6): 113.
Internet References
Moth Photographers Group - range map, photos of living and pinned adults.
BOLD - Barcode of Life Data Systems - collection map and photos of pinned adults.
Entomologica Americana 1889, p.113 Original description of the species.
Works Cited
1.The Phycitidae of North America
George D. Hulst. 1890. Transactions of the American Entomological Society, 17(2): 93-228.
2.The Moths of America North of Mexico, Fascicle 15.3: Pyraloidea: Pyralidae (Part), Phycitinae (Part)
H H Neunzig. 1990. The Wedge Entomological Research Foundation.