Moths of North Carolina
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View PDFOecophoridae Members: Eido Members: 44 NC Records

Eido trimaculella (Fitch, 1856) - Three-spotted Concealer Moth

Eido trimaculellaEido trimaculellaEido trimaculellaEido trimaculella
Taxonomy
Superfamily:
Gelechioidea		 Family:
Oecophoridae		Subfamily:
Oecophorinae		Tribe:
Oecophorini		P3 Number:
59a0062		 MONA Number:
1068.00
Identification
Field Guide Descriptions: Beadle and Leckie (2012)Online Resources: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLDTechnical Description, Adults: Hodges (1974)                                                                                 
Adult Markings: The following is primarily based on the descriptions by Busck (1909) and Forbes (1923). The antenna is annulated with black and white, with each joint having a large white scale on the upper side. The third joint of the labial palp is blackish with two longitudinal white lines that terminate just before the base. The second joint is white-tipped and has a pointed ventral tuft of scales. The forewing is noticeably triangular, with a subfalcate apex and arched costa. The ground color is luteus but masked by a heavily dusting of fuscous coloration that produces an overall dusky brown color. White scales are sprinkling across the forewing and are most concentrated on the apical third where they sometimes form a whitish subterminal band. Three small pale costal spots are usually evident; one in the middle, one at the apical third that is the largest, and one just before the apex. The fringe is dark with a double series of pale bars, and the hindwing is dark. The patterning on this species is somewhat variable. The subfalcate apex and arched costa create a distinctive shape which, along with the maculation, is diagnostic.
Wingspan: 13-16 mm (Busck, 1909)
Forewing Length: 5-8 mm (Hodges, 1974)
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: The larvae are fungus-feeders and are known to feed on bracket fungi (Hodges, 1974; Lawrence and Powell, 1969). They live in webbing beneath the fruiting body. Populations are univoltine and the larvae may overwinter in the fruiting body, although this has not been verified.
Larvae ID Requirements: Identifiable only through rearing to adulthood.
Distribution in North Carolina
Distribution: Eido trimaculella is widely distributed in eastern North America, with a few scattered records in the West in British Columbia, Alberta, and Saskatchewan. In the East, it occurs in southern Canada (Manitoba to Nova Scotia) and throughout most of the eastern US from the New England states south to Florida and westward to Louisiana, Arkansas, Illinois, and Minnesota. As of 2020, all of our records are from either the Piedmont or lower elevations in the mountains.
County Map: Clicking on a county returns the records for the species in that county.
Eido trimaculellaAlamance Alexander Alleghany Anson Ashe Avery Beaufort Bertie Bladen Brunswick Buncombe Burke Cabarrus Caldwell Camden Carteret Caswell Catawba Chatham Cherokee Chowan Clay Cleveland Columbus Craven Cumberland Currituck Dare Davidson Davie Duplin Durham Edgecombe Forsyth Franklin Gaston Gates Graham Granville Greene Guilford Halifax Harnett Haywood Henderson Hertford Hoke Hyde Iredell Jackson Johnston Jones Lee Lenoir Lincoln Macon Madison Martin McDowell Mecklenburg Mitchell Montgomery Moore Nash New Hanover Northampton Onslow Orange Pamlico Pasquotank Pender Perquimans Person Pitt Polk Randolph Richmond Robeson Rockingham Rowan Rutherford Sampson Scotland Stanly Stokes Surry Swain Transylvania Tyrrell Union Vance Wake Warren Washington Watauga Wayne Wilkes Wilson Yadkin Yancey
Flight Dates:
High Mountains (HM) ≥ 4,000 ft.
Low Mountains (LM) < 4,000 ft.
Piedmont (Pd)
Coastal Plain (CP)

Click on graph to enlarge 		Image showing flight dates by month for High Mountains greater than 4,000 feet, Low Mountains, Piedmont, and Coastal Plain: adults.