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Beetles

The birch sapwood borer
Scolytus ratzeburgi Janson (Coleoptera: Curculionidae: Scolytinae: Scolytini)

Status
Exotic (absent from Australia)

Dorsal view female Zoomify

Caption: Budapest Horvath

Source: Simon Hinkley & Ken Walker Museum Victoria

Shiny black beetle 4.5-6.5mm long. Legs and antennae are brown, 7 segmented antenna has a 3 segmented oval, flat antennal club.

Male has long, densely haired, flat frons, has a short longitudinal keel above the mandibles and a fine circular declivity between the eyes. Sterna 3 has a large “button-like” central tubercle; Sterna 4 has a small ridge is formed from the concrescence of two closely adjacent tubercles.

Female has a slightly arched head and rarely has a longitudinal keel above the mandibles; pronotum is finely punctured; elytra flat with roughly punctured grooves and finely punctured interstices; rear portion of elytra has a smooth edge.

Source:

Vladimir Novak, F. Hrozinka & B. Stary (1976). Atlas of insects harmful to forest trees Volume 1. Elesvier Scientific Publishing Company

PaDIL Links:
almond bark beetle (Scolytus amygdali)
White beech bark beetle (Scolytus carpini)
elm bark beetle (Scolytus ensifer)
European oak bark beetle (Scolytus intricatus)
Kirsch bark beetle (Scolytus kirschii)
middle elm tree split bark beetle (Scolytus laevis)
Larger shothole borer (Scolytus mali)
European elm bark beetle (Scolytus multistriatus)
Elm bark beetle (Scolytus pygmaeus)
Shothole Borer (Scolytus rugulosus)
Banded elm bark beetle (Scolytus schevyrewi)
Large elm beetle (Scolytus scolytus)
bark beetle (Scolytus sulcifrons)

Specimen contact point: Museum Victoria

Citation: Walker, K. (2007) The birch sapwood borer (Scolytus ratzeburgi) Pest and Diseases Image Library. Updated on 7/10/2007 12:26:59 PM. Available online: http://www.padil.gov.au

Created Date: 5/18/2006 3:38:41 PM

Last Updated: 7/10/2007 12:26:59 PM

Diagnostic Images
Abdomen	Elytra	Head Front	Head Side
Pronotum	Thorax Side
Overview Images
Dorsal	Lateral	Posterior	Ventral
Other Images
Abdomen female view	Dorsal view male	Head front male	Lateral view female
Posterior view male	Sternal characters