Phloeosinini

Tribe-level identification requires examination of morphological characters distinguishing Phloeosinini from other scolytine tribes, including features of the antennae, pronotum, and elytral declivity. Members of the type genus Phloeosinus are characterized by deeply emarginate compound eyes, coarse reticulate frontal and prothoracic surfaces, and deeply V-shaped basal margin of the elytra.

Conifer forests and plantations; development occurs inside tissues of live plants, timber, wood products, and wood-packaging materials. Specific species occupy wetland plains, coastal areas, and montane regions up to 1,400 m elevation.

Global distribution with native ranges across multiple continents; many species have established outside native ranges through international trade in logs, wood packaging materials, bonsai, and ornamental plants.

Phloem and sapwood feeding; adults and larvae bore inside plant tissues and develop within conifer hosts. Feeding occurs in dead wood or living plant parts including branches and trunks.

• Araucariaceae - primary host family
• Cupressaceae - primary host familyincludes Metasequoia glyptostroboides
• Pinaceae - primary host family
• Podocarpaceae - primary host family
• Taxaceae - primary host family

Development occurs entirely within plant tissues; larval stage takes place protected inside wood, enabling survival during transport. Specific duration and developmental stages vary by species and environmental conditions.

Adults create small circular entrance holes (<0.5 mm diameter) in host branches. Larval development inside plant tissues facilitates passive dispersal across continents via global trade. Some species exhibit density-dependent tunneling behavior, with gallery length proportional to beetle density. Attack behavior varies between native and invaded environments, with potential to shift to phylogenetically related or completely different host species.

Economically important pests of native forests and agricultural crops globally; significant impacts on conifer ecosystems and plantations. Some species threaten survival of endangered relictual tree species.

Major phytosanitary concern due to cryptic biology and ease of international transport in wood products. Often evade detection at ports of entry. Cause substantial economic damage to forestry, timber production, and ornamental plant industries.

• HylastiniBoth are conifer-associated scolytine tribes; distinguished by morphological characters of antennae and pronotum
• HylurginiOverlapping conifer host range; separated by tribal-level morphological features and gallery patterns
• IpiniSimilar wood-boring ecology in conifers; distinguished by antennal club structure and pronotal shape
• PolygraphiniShared subfamily and general biology; differentiated by specific morphological characters and host associations

• bark beetle
• conifer pest
• invasive potential
• wood-boring
• phytosanitary risk
• Scolytinae
• forest pest

• BugGuide
• Wikipedia
• Phloeosinus metasequoiae sp. nov. (Coleoptera, Curculionidae, Scolytinae, Phloeosinini), a new insect pest of Metasequoia glyptostroboides in China
• The first host plant dataset of Curculionidae Scolytinae of the world: Hylastini LeConte, Hylurgini Gistel, Ipini Bedel, Phloeosinini Nusslin, Polygraphini Chapuis