Moths of North Carolina
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View PDFGeometridae Members: Eumacaria Members: 91 NC Records

Eumacaria madopata (Guenée, [1858]) - Brown-bordered Geometer

Eumacaria madopataEumacaria madopataEumacaria madopata
Taxonomy
Superfamily:
Geometroidea		 Family:
Geometridae		Subfamily:
Ennominae		Tribe:
Macariini		P3 Number:
91a0691		 MONA Number:
6272.00		 MONA Synonym:
Eumacaria latiferrugata
Comments: The sole species in this genus and entirely confined to North America (Ferguson, 2008).
Identification
Field Guide Descriptions: Covell (1984; as Eumacaria lateferrugata); Beadle and Leckie (2012)Online Resources: MPG, BugGuide, iNaturalist, Google, BAMONA, GBIF, BOLDTechnical Description, Adults: Forbes (1948); Ferguson (2008)Technical Description, Immature Stages: Forbes (1938); Wagner et al. (2001); Ferguson (2008)                                                                                 
Adult Markings: A medium-small Geometrid that is similar to Trigrammia and Macaria species in possessing subfalcate forewings and angled hindwings. The ground color is typically pale gray, crossed by fine brown antemedial, medial, and postmedial lines. The antemedian is bent or strongly angled where it crosses the radial vein and the medial line may also be bent close to the costa (Ferguson, 2008). The postmedian is usually strong, even, slightly sinuous and edged on the outward side by a fine pale line (Forbes, 1948). In some individuals, the area between the postmedian and the outer margin is much darker than the median and basal areas, and crossed by fine pale lines along the veins. In others, the outer portion of the wing is more concolorous, with only a slightly greater amount of dark dusting than in the basal portion. Although the paler form is supposedly more typical of Southeastern populations (Forbes, 1948; Ferguson, 2008), both forms occur in North Carolina, with the darker form possibly being more prevalent. Pale form individuals can be confused with Trigrammia quadrinotaria, which has a more even antemedian line and possesses dark dots in the subterminal areas of all four wings. Both dark and pale forms may be confused with Digrammia species, which again have an evenly curved antemedian and also possess more rounded wings.
Adult Structural Features: The antennae is bipectinate in males and subpectinate in females (Forbes, 1948), unlike the case in Digrammia and Trigrammia and most species of Macaria, where the antennae of both sexes is simple. Males possess foveae but have relatively slender, unmodified hind tibiae (Ferguson, 2008).
Structural photos
Adult ID Requirements: Identifiable from good quality photos of unworn specimens.
Immatures and Development: Larvae are fairly stout inchworms with a dark reddish-brown to gray-brown body (Wagner et al., 2001; Ferguson, 2008). Whitish longitudinal stripes are present but may be obscured by the dark markings; some larvae may be largely black (Forbes, 1938). See Wagner et al. and Ferguson for illustrations and additional details.
Larvae ID Requirements: Identifiable from good quality photos, especially where associated with known host plants.
Distribution in North Carolina
Distribution: Recorded primarily in the southern half of the Coastal Plain, including the Fall-line Sandhills. A few records also exist for the Piedmont, including as far west as Mecklenburg County
County Map: Clicking on a county returns the records for the species in that county.
Eumacaria madopataAlamance 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%20Hanover 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.