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Six-Spined Engraver Beetle

Ips sexdentatus (Boerner)
Six-Spined Engraver Beetle Six-Spined Engraver Beetle Six-Spined Engraver Beetle Six-Spined Engraver Beetle Six-Spined Engraver Beetle
Six-spined engraver beetle photos: Ken Walker, Museum
Hosts:

The six-spined engraver beetle is a pest of spruce, rarely found on other conifers as pine, fir, and larch. The pest prefers the thin barked parts of the stem, and is therefore most common on younger trees, or on the upper parts of older trees.

 

Commodities Affected:
Forestry and Natural Areas, Nursery, Ornamentals, and Turf

 

Threat:

The six-spined engraver beetle adults are strong fliers capable of covering several km in search of suitable host material. They are also subject to wind dispersal. This insect could be easily introduced into North America via unprocessed conifer logs, or wooden crating, pallets and dunnage containing bark strips. Assuming that this insect will behave in North America as it does in Eurasia, the six-spined engraver beetle will confine its attacks to weakened, dying or dead trees. This insect would become one of the complex of Ips engraver beetles present in North America and would add little to the economic impact already caused by indigenous species. Ips attacks introduce blue stain fungi, Ophiostoma spp., into host trees, which can result in loss of value.

Distribution:

The six-spined engraver beetle is not known to occur in Indiana.