Species Dioryctria disclusa - Webbing Coneworm Moth - Hodges#5847

5847

Rusty Pine Cone Moth (adult)

Webbing Coneworm (larva)

Dioryctria disclusa Heinrich, 1953

Wingspan 24-29 mm. (1)

The Heinrich (1956) revised description of Dioryctria disclusa is available in PDF or online in the print references. (1)

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Adult: forewing yellowish-orange inside AM line, darker orange beyond AM line; AM and PM lines white, jagged; median line incomplete, faint; terminal line a series of white spots; basal and median areas may have diffuse white patches; fringe white or pale yellow; hindwing pale gray with white fringe

Larva: brown with thin black band across each abdominal segment; head dark brown

New Brunswick to Florida, west to Texas, north to Manitoba

pine forests and seed orchards

Adults are most often reported from April to September. (2)

Larvae feed on developing cones of various species of pine

In northern states, they overwinter as first-instar larvae in hibernaculae spun beneath bark scales on branches of red pine. In spring, larvae feed on staminate flowers, later they tunnel in 2nd-year cones.(3)

In southwest, winter is spent as a partly-grown larvae in newly formed cones. Pupation occurs in damaged cones. (3)

One generation per year.(3)

a common pest of pine seed orchards

the only orange Dioryctria species in the east

in the west, D. auranticella is nearly identical.

Heinrich, C. 1953. Farrier & Tauber Iowa State College Journal of Science. 27: 495.

Heinrich, C. 1956. American Moths of the Subfamily Phycitinae. United States National Museum Bulletin 207: 152. (1)

Moth Photographers Group (2)

live adult image (Larry Barber, USDA Forest Service, forestryimages.org)

pinned adult image by John Glaser, plus foodplant and distribution (Larry Line, Maryland)

pinned adult image (James Adams, Dalton State College, Georgia)

live larva image on Loblolly Pine, and common name reference [Webbing Coneworm; larva] (Larry Barber, USDA Forest Service, forestryimages.org)

Barcode of Life Data Systems (BOLD) (4)