1. PaDIL Species Factsheet

Scientific Name: Trogoxylon impressum (Comolli 1837) (Coleoptera: Bostrichidae: Lyctinae: Trogoxylini)

Common Name Powderpost beetle Live link: http://www.padil.gov.au/pests-and-diseases/Pest/Main/135863

Image Library Australian Biosecurity Live link: http://www.padil.gov.au/pests-and-diseases/

Partners for Australian Biosecurity image library

Department of Agriculture, Water and the Environment https://www.awe.gov.au/ Department of Primary Industries and Regional Development, Western Australia https://dpird.wa.gov.au/ Plant Health Australia https://www.planthealthaustralia.com.au/ Museums Victoria https://museumsvictoria.com.au/ 2. Species Information

2.1. Details Specimen Contact: Zoological Museum Amsterdam, University of Amsterdam - Author: Walker, K. Citation: Walker, K. (2006) Powderpost beetle(Trogoxylon impressum)Updated on 8/24/2021 Available online: PaDIL - http://www.padil.gov.au Image Use: Free for use under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY- NC 4.0)

2.2. URL Live link: http://www.padil.gov.au/pests-and-diseases/Pest/Main/135863

2.3. Facets Status: Exotic Species Occurrence in Australia Group: Beetles Commodity Overview: Horticulture, Forestry Commodity Type: Timber, Fresh Stems Distribution: Europe and Northern Asia, Mediterranean Basin, Africa, Australasian - Oceanian, South and South-East Asia, USA and Canada, Central and South America, Cosmopolitan

2.4. Other Names Lyctus castaneus Perroud, 1837 Lyctus impressus Dejean, 1833 Lyctus impressus captialis Schaufuss, 1882 Lyctus laevis Galeazzi, 1854 Lyctus laevis Comolli, 1837 lycus laevipennis Falder, 1837

2.5. Diagnostic Notes The tribe Trogoxylini is characterised by:

- Hind coxae distinctly separated - Punctures and hairs on each elytron indistinct and irregularly distributed - Metathoracic femora widened, nearly elliptical and stringly compressed

The genus _Trogoxylon_ is characterised by:

- Body length: 1.7-4.2mm - Pronotum lateral margins sometimes flexed but not grooved - Mandible basal half of outer margin thickened but not dilated - Prosternal intercoxal process apex narrower than the adjacent coxal cavity - Inner dorsal margin of eyes without a group of erect hair

There are 15 known valid species in this genus.

Diagnostic characteristics of this species include:

- Body length: 2.75-4.5mm - Three elevations, two in front and one over the eye on each side of the head

Source: Graham Goodyer 2008 (unpublished) Identification of Bostrichid beetles to Genus and Species.

Adults rusty red-brown to black, densely covered with short yellowish hairs not arranged in rows; antennal 10th segment not wider than long; lateral margins of prothorax converge behind (towards wing covers); length about 1/8" (2.5-4.3 mm); elytra are about twice as long as wide, and have a fine, golden pubescence.

This genus is readily identified from other lyctids by anterior angles of pronotum being very prominent and acute, the postclypeus being rounded and depressed and the abrupt expansion of the antennal club. The pronotum is about as wide as the elytra and there is a shallow Y-shaped depression in the disc. The anterior margin of the pronotum is strongly convex and posterior angles are prominent and acute.

2.6. Web Links Fauna Europaea - Taxonomy and Distribution: http://www.faunaeur.org/full_results.php?id=123341 3. Diagnostic Images

Gallia: France, Piegen (Drome) May 1979, Gallia: France, Piegen (Drome) May 1979, M/J. Gijswijt M/J. Gijswijt Antenna close up: Simon Hinkley & Ken Dorsal view: Simon Hinkley & Ken Walker Walker Museums Victoria Museums Victoria

Gallia: France, Piegen (Drome) May 1979, Gallia: France, Piegen (Drome) May 1979, M.J. Gijswijt M.J. Gijswijt Elytra: Simon Hinkley & Ken Walker Head front: Simon Hinkley & Ken Walker Museums Victoria Museums Victoria

Gallia: France, Piegen (Drome) May 1979, Gallia: France, Piegen (Drome) May 1979, M.J. Gijswijt M.J. Gijswijt Head side: Simon Hinkley & Ken Walker Lateral view: Simon Hinkley & Ken Walker Museums Victoria Museums Victoria Gallia: France, Piegen (Drome) May 1979, Gallia: France, Piegen (Drome) May 1979, M.J. Gijswijt M.J. Gijswijt Posterior view: Simon Hinkley & Ken Walker Pronotum: Simon Hinkley & Ken Walker Museums Victoria Museums Victoria 4. Other Images

Russia: Elizabetpol - Cauceau. Originally Russia: Elizabetpol - Cauceau. Originally identified as Lyctus suturalis but considered identified as Lyctus suturalis but considered to be Trogoxylon impressus. to be Trogoxylon impressus. Antenna: Simon Hinkley and Ken Walker Dorsal view: Simon Hinkley and Ken Walker Museums Victoria Museums Victoria

Russia: Elizabetpol - Cauceau. Originally Russia: Elizabetpol - Cauceau. Originally identified as Lyctus suturalis but considered identified as Lyctus suturalis but considered to be Trogoxylon impressus. to be Trogoxylon impressus. Elytra: Simon Hinkley and Ken Walker Head front: Simon Hinkley and Ken Walker Museums Victoria Museums Victoria

Russia: Elizabetpol - Cauceau. Originally Russia: Elizabetpol - Cauceau. Originally identified as Lyctus suturalis but considered identified as Lyctus suturalis but considered to be Trogoxylon impressus. to be Trogoxylon impressus. Head side: Simon Hinkley and Ken Walker Lateral view: Simon Hinkley and Ken Walker Museums Victoria Museums Victoria Russia: Elizabetpol - Cauceau. Originally Russia: Elizabetpol - Cauceau. Originally identified as Lyctus suturalis but considered identified as Lyctus suturalis but considered to be Trogoxylon impressus. to be Trogoxylon impressus. Posterior view: Simon Hinkley and Ken Pronotum: Simon Hinkley and Ken Walker Walker Museums Victoria Museums Victoria

Results Generated: Monday, September 27, 2021