redheaded pine sawfly range

redheaded pine sawfly range

Redheaded pine sawfly. They have three pairs of legs at the front and six to seven pairs of prolegs at the rear. Some individuals may not emerge as adults until the following year,[4] or have an extended diapause. The young larvae feed on the sides of the pine needle, leaving an uneaten central section which withers and dies, remaining on the tree giving a distinctive straw-like effect. [3], The larvae feed on many members of the pine family. [3] The larvae resemble the caterpillars of lepidopterans; young larvae are whitish with brown heads while older larvae are yellowish-green with up to eight longitudinal rows of black spots, and brown heads. [3], "Fourth Report on the Noxious and Other Insects of the State of New-York", https://en.wikipedia.org/w/index.php?title=Neodiprion_lecontei&oldid=825863213, Creative Commons Attribution-ShareAlike License, This page was last edited on 15 February 2018, at 21:30. Red-headed pine sawfly damage is observed primarily in pine plantations and on trees less than 3 m tall in natural forests. Introduced pine sawfly: eastern white pine Hymenoptera: Diprionidae. It may occasionally attack white pine and other conifers. These appear pale and give the needle a banded appearance. Stressed trees are most often attacked. Neodiprion lecontei is a species of sawfly in the family Diprionidae native to eastern North America, commonly known as the red-headed pine sawfly or leconte's sawfly. Sawflies are not true flies. This species is an important defoliator of young southern yellow pines (less than 15-20 feet tall). The eggs hatch after about four weeks. The larvae are gregarious, and can strip whole branches and trees of needles. It forms part of the N. lecontei species group, which consists of a clade of about twenty closely related species which have been intensively studied. The redheaded pine sawfly, Neodiprion lecontei (Fitch), is one of numerous sawfly species (including 35 species in the genus Neodiprion) native to the United States and Canada (Arnett 2000) inhabiting mainly pine stands. Several species are native to Texas, but the one that causes the most concern is the redheaded pine sawfly, Neodiprion lecontei (Fitch). [4] When their development is finished, they drop to the ground and spin cocoons in the needle litter or underground. Its range extends from southeastern Canada westwards to the Great Plains and southwards to Texas and Florida. If the tree is completely defoliated, the larvae move as a group onto a neighboring tree, or may start chewing at the soft bark of twigs. [3], The adult female sawfly cuts slits in pine needles with her ovipositor and deposits one egg in each slit. The ovipositor of all adult female sawflies is saw-like, and is likely where the common name for this group (suborder) originated (PADCNR 2010). In the northern part of the range there is a single generation each year, but further south there may be two or three, sometimes overlapping, generations. European and redheaded pine sawflies: Scotch, red, Mugo, Jack, and Austrian pines 2. 1. The genome has been sequenced and consists of 330 MB arranged on seven chromosomes. [4], N. lecontei is native to eastern North America. They are 20-30 mm (3/4 - 1") long when fully grown. The larvae feed on the foliage of many species of native and imported pines. Neodiprion leconteiis an important defoliator of commercially grown pine, as the preferred feeding conditions for sawfly larvae are enhanced in monocu… This sawfly prefers to feed on jack, red, shortleaf, loblolly, slash, longleaf, pitch, Swiss mountain, and mugo pines. Also attacked are shortleaf, loblolly, slash, pitch, Swiss mountain, Japanese black, mugho pines, white pine, larch, deodar cedar, and Norway spruce. Life cycle: Spend the winter as pupae in the soil. In the northern part of its range, it favours hard or yellow pines such as Pinus banksiana and Pinus resinosa. Here they overwinter as prepupae, pupating in the spring and biting their way out of one end of the cocoon to emerge as adults.

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