Xyloterini

Genus Guides

2

Xyloterini is a tribe of ambrosia beetles within the Scolytinae (Curculionidae). Members are characterized by fungal and association with woody plants. The tribe includes such as Xyloterinus and Indocryphalus. Xyloterinus politus, the type of Xyloterinus, attacks black oak trees and maintains mutualistic relationships with ambrosia yeasts including Candida xyloterini, a yeast species named after this tribe.

Xyloterinus politus by (c) Robert Roach, some rights reserved (CC BY), uploaded by Robert Roach. Used under a CC-BY license.0 Trypodendron lineatum Männchen Weibchen 20fach von rechts by Fdcgoeul. Used under a CC BY 3.0 license.Xyloterus lineatus (Olivier, 1795) by URSchmidt. Used under a CC BY-SA 4.0 license.

Pronunciation

How to pronounce Xyloterini: //ksaɪləˈtɛrɪnaɪ//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Galleries within wood of trees; primarily associated with oak including black oak

Distribution

Documented from North America (Xyloterinus politus) and Southeast Asia including Vietnam (Indocryphalus )

Diet

Ambrosia fungus ; beetles and larvae feed on symbiotic fungi grown within wood galleries rather than wood tissue itself

Host Associations

  • black oak - treeattacked by Xyloterinus politus
  • oak - treeprimary for tribe members

Life Cycle

, larva, pupa, development occurs within wood galleries; larvae feed on ambrosia fungus cultivated by adults

Behavior

Excavates galleries in wood; cultivates ambrosia fungi on gallery walls for larval nutrition; exhibits fungal- mutualism

Ecological Role

Primary decomposer of dead or stressed wood; for ambrosia fungi and associated yeasts; contributes to nutrient cycling in forest

Human Relevance

Some attack living or stressed trees causing economic damage; Xyloterinus politus is a pest of black oak; associated yeasts have been isolated from aircraft fuel systems indicating potential for human-mediated

Similar Taxa

  • other Scolytinae tribesXyloterini is distinguished by ambrosia-feeding and gallery construction; other Scolytinae include bark beetles that feed directly on phloem rather than cultivated fungi
  • PlatypodinaeAlso ambrosia beetles but in separate ; distinguished by morphological characters and different fungal associations

Tags

Sources and further reading