Buprestidae of South Australia
( Jewel beetles )
by Peter J. Lang
Astraeus mastersii   Macleay, 1872
subfamily  Polycestinae » tribe  Astraeini » subtribe  Astraeina
Actual
size¹:
8.6 mm
×
3.2 mm
Measurements (mm)
male
L18.6
n = 1
L28.3
n = 1
W3.2
n = 1
Legend  L1length from clypeus/frons to elytral apex (mean, range, sample size)
L2length from anterior of edge of eyes to elytral apex
Wmaximum width with elytra fully closed
Astraeus mastersii  Distinctive features

Moderately small; elytra dark blue, with major lacunae yellow and in four rows, acutely tapered in posterior third.

Notes

Known in SA from a specimen labelled as collected by W. White on 16 December 1869 from the Reed Beds (now Fulham, on the west side of Adelaide).

The habitat in this area has been greatly modified by changes to the water regime and suburban development. A number of plant and animal species previously recorded from the Reed Beds area are now considered to have become regionally extinct, and this may be another example. However, there is always the possibility of mixed labels or mis-labelling. Given that it is such an old collection, is a single specimen with no other supporting evidence, and represents such a major disjunction from the rest of the species distribution in eastern Australia, it is here flagged as questionable to indicate at least some degree of uncertainty.

A second SA occurrence is based on the trapping of a single individual on Calperum Station in MU region, reported in Pullen 1997 by Coleoptera expert J.F. Lawrence who was also credited with making the identifications.

Distribution
SA Regions¹:  SL?MU
Australian States:  SAQLDNSWVIC
Southern South Australian occurrences
LegendP.J.Lang collection vouchered records
other private collection or museum specimens, or sightings
Satellite map
Terrain map
Enlarge map
Adult activity records for Astraeus mastersii  (total actual records: 1 beetles)
1
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Legend
9
number of active beetles, actually recorded in that quarter-month
actual count > 1 (median)
actual count <= 1 (median)
Host plant notes

Casuarina appears to be a host genus for this species. The MU record of Lawrence 1997 was trapped in a drainage depression dominated by Black Oak (Casuarina pauper), and Barker 1975 cited 19 specimens collected on the closely related Casuarina cristata at Endungalba in Queensland (corrected from C. equisetifolia in Barker 2006c). There is also evidence for a different larval host: Hawkeswood 1986a reported a live adult extracted from a fallen log of Grey Gum Eucalyptus propinqua in south-eastern Queensland.

¹ LegendregionsSA State Herbarium regions (map)
EA: Eastern, EP: Eyre Peninsula, FR: Flinders Ranges, GT: Gairdner-Torrens, KI: Kangaroo Island, LE: Lake Eyre, MU: Murray, NL: Northern Lofty, NU: Nullarbor, NW: North-Western, SE: South-Eastern, SL: Southern Lofty, YP: Yorke Peninsula
sizeThe ellipse is the correct size when printed, indicative on a desktop screen, and likely to be wrong on a mobile device.