1. PaDIL Species Factsheet Scientific Name: Prostephanus arizonicus Fisher, 1950 (Coleoptera: Bostrichidae: Dinoderinae) Common Name powderpost beetle Live link: http://www.padil.gov.au/pests-and-diseases/Pest/Main/142481 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: Museum Victoria - [email protected] Author: McCaffrey, Sarah Citation: McCaffrey, Sarah (2012) powderpost beetle(Prostephanus arizonicus)Updated on 8/20/2021 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/142481 2.3. Facets Commodity Overview: Forestry, Horticulture Commodity Type: Timber Distribution: USA and Canada Group: Beetles Status: Exotic species - absent from Australia 2.4. Diagnostic Notes The subfamily Dinoderinae is characterised by: - Hind coxae contiguous or closely approximated - Pronotum hood-like; head deeply inserted into the pronotum underneath, head not entirely visible from above - Pronotum with posterolateral carina but carina not present along entire lateral margin - Pronotum anterior margin rounded or conical shaped or truncate - Pronotum with medium tooth most prominent - Head with plane or labrum angled downwards from a raised clypeus - Tarsal segment 1 as long as or longer than segment 2; Segment 3 as long as or longer than segment 2 The genus _Prostephanus_ is characterised by: - Body length: 3.5-5.5mm - Pronotum strongly narrowing in front, teeth along anterior margin arranged to form converging straight lines - Pronotum conical shaped in front, teeth slightly projected at middle of anterior margin - Labial palp second segment broad, swollen and obliquely truncate at the apex, third segment much longer than the second. The genus _Prostephanus_ has 5 known species: North America: _P. apax, P. arizonicus, P. punctatus & P. truncatus_ South America: _P. sulcicollis_ _P. arizonicus_ differs from all other members of this genus by its larger size and having large, recurved tubercles on each side of the apical declivity. Source: Graham Goodyer 2008 (unpublished) Identification of Bostrichid beetles to Genus and Species. 3. Diagnostic Images Arizona, Cochise Co., 5 mi W Portal, 5400ft, Arizona, Cochise Co., 5 mi W Portal, 5400ft, 7 August 1969, R. L. Wenzel, at light 7 August 1969, R. L. Wenzel, at light Antenna Image: Clare McLellan Museums Dorsal Image: Sarah McCaffrey Museums Victoria Victoria Arizona, Cochise Co., 5 mi W Portal, 5400ft, Arizona, Cochise Co., 5 mi W Portal, 5400ft, 7 August 1969, R. L. Wenzel, at light 7 August 1969, R. L. Wenzel, at light Elytra Image: Sarah McCaffrey Museums Head Front Image: Sarah McCaffrey Victoria Museums Victoria Arizona, Cochise Co., 5 mi W Portal, 5400ft, Arizona, Cochise Co., 5 mi W Portal, 5400ft, 7 August 1969, R. L. Wenzel, at light 7 August 1969, R. L. Wenzel, at light Head Side Image: Sarah McCaffrey Lateral Image: Sarah McCaffrey Museums Museums Victoria Victoria Arizona, Cochise Co., 5 mi W Portal, 5400ft, Arizona, Cochise Co., 5 mi W Portal, 5400ft, 7 August 1969, R. L. Wenzel, at light 7 August 1969, R. L. Wenzel, at light Posterior Image: Sarah McCaffrey Museums Pronotum Image: Sarah McCaffrey Victoria Museums Victoria Arizona, Cochise Co., 5 mi W Portal, 5400ft, Arizona, Cochise Co., 5 mi W Portal, 5400ft, 7 August 1969, R. L. Wenzel, at light 7 August 1969, R. L. Wenzel, at light Thorax Side Image: Sarah McCaffrey Ventral Image: Sarah McCaffrey Museums Museums Victoria Victoria Results Generated: Sunday, September 26, 2021 .