For example, the spotted pine sawyer (M. clamator), black pine sawyer (M. galloprovincialis), and the Japanese pine sawyer beetle (M. alternatus). I was sitting there when this critter came in for a landing. In addition to damage by larval feeding, white spotted sawyer … These dots are exceptionally on the sawyer beetles. Males are shiny black except for a small, round, white spot at the base of the elytra. Orientation to pest . These beetles are found in forested areas across the continent. Whitespotted sawyer, Monochamus scutellatus (Say), is a native North American borer that attacks dying or recently dead conifers that have dried out somewhat but have not been heavily attacked by other wood-feeding insects. Whitespotted sawyer. Some species of this beetle also have the word ‘pine’ in the common name. Monochamus scutellatusCanoe Island, August 12, 2019 I received this photo yesterday of a very cool Cerambycid (Long-horned) beetle from Chase S. on Canoe Island, WA. One site where it may be seen particularly frequently is in forest areas where mountain pine beetle has caused recent tree mortality. White-spotted Sawyer - A member of the Cerambicydae Family of Long-horned Beetles. Monochamus scutellatus (Say) (Coleoptera: Cerambycidae). Sawyer beetle identification. Figure 9. In fact, their antennae can … white spotted sawyer are jack pine, white spruce, black spruce and balsam fir, while balsam fir ... sawyer beetles are part of the natural death and renewal process in the forest, as they attack recently dead and declining trees. Seen on a picnic table at Lightning Lakes in Manning Park, BC. If you see a glossy one, please report it to your extension agency as quickly as possible. Larvae are creamy-white grubs, 35–50 mm long when full grown, with a yellowish thorax and brown head. In fact, their larvae help break down the fibers of decaying trees which helps add nutrients back into the soil. Damage, symptoms and biology It is the larval stage of the whitespotted sawyer that causes the most damage, by feeding inside the trunks of weak or recently killed or felled conifers. The spotted pine sawyer is a very common insect that develops in pines that have recently been killed or are under severe stress. Asian longhorned beetle larva tunneling damage through heartwood. Found mainly in forested areas, especially where pine trees are prevalent. After more extensive research, I learned that the damage the larvae of these beetles cause is rather severe. The whitespotted sawyer is a bronzy black, while the Asian longhorned beetle is true black and shiny. Females may have mottled white spots on the elytra. This species is a type of Long-horned Beetle so extraordinarily long antennae (also called 'horns') reach out far beyond the head. A similarly spotted black and white beetle with a glossy shell may be an Asian or citrus longhorned beetle, exotic pests having very different life habits from our native spotted sawyer-- they attack healthy trees and do cause serious damage. This is a Whitespotted Sawyer beetle (Monochamus scutellatus). The first time I saw one on San Juan Island, I almost… This is a Long Horned Borer Beetle in the genus Monochamus, most like Monochamus scutellatus, the White Spotted Sawyer. As a starting point, if you suspect you might have these lil' suckers around your property, look for pine trees that have turned a brownish color. A White spotted pine sawyer is discriminated from an Asian Long horned beetle by the position of its shoulder blade beneath the neck, which possesses round whirs/dots, which is the indication of a harmless beetle. Adults cause injuries to the young twigs of healthy trees by feeding on the tender bark. 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