Buprestidae of South Australia
( Jewel beetles )
by Peter J. Lang
Melobasis purpurascens   (Fabricius, 1801)
subfamily  Buprestinae » tribe  Melobasini » subtribe  Melobasina
Melobasis  species group: purpurascens
Melobasis purpurascens   Adult images
Melobasis purpurascens, BH-PL4757, female, from Acacia myrtifolia stem billets, SE, 8.7 × 3.2 mm
Actual
size¹:
8.7 mm
×
3.2 mm
Measurements (mm)
female
L18.7
n = 1
L28.4
n = 1
W3.1
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
Melobasis purpurascens  Distinctive features

Similar to M. splendida but differs noticeably in its more elongate shape, and the elytra often have a greater extent of maroon/purple coloration and narrower green/blue vittae.

Notes

Melobasis purpurascens appears to be an uncommon species in South Australia and restricted to areas of higher rainfall, although there is a 1936 collection labelled with the general locality of Yorke Peninsula. As with M. splendida, it can be difficult to separate from Melobasis innocua without male genitalia, and there is a possibility that specimens from the lower SE region, at least, may be that species.

Distribution
SA Regions¹:  YPSLSE
Australian States:  SATASVICNSWQLD
Southern South Australia distribution
LegendP.J.Lang collection vouchered records
other private collection or museum specimens, or sightings
Satellite map
Terrain map
Enlarge map
Adult activity records for Melobasis purpurascens  (total of 7 beetles)
1 2
1 1
1
1
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Legend
live emerged adults, count > median value of 1 per quarter month
live emerged adults, count <= median value of 1
live non-emerged adults only, for that quarter month
12
number of active beetles for that quarter month
Larval host plant
individuals sites SA regions¹ family adult ex billet
Acacia myrtifolia21SEF2
Legendindividualscount of breeding adults, pupae and larvae
sitescount of major sites (unique 10 km grid cells +/- some distinct approximate localities)
adultlive = extracted alive;   dead = extracted dead as intact or fragmentary remains;   ex billet = reared and emerged from stored sections of host;   ex pupa = reared from sampled pupa
pupaextracted pupa;   pupa ex larva = reared pupa from larva
larvaextracted larva (any stage including prepupa)
gall (only)hatched or unhatched gall identified by form and position rather than contents
Plant family
Code individuals % host plant taxa
F Fabaceae 2 100% 1
Position in larval host
positionindividualssitesadult ex billet
stem212
Host plant notes

A review of host plant records for M. purpurascens by Hawkeswood 2006b lists a variety of larval hosts, including the following species which also occur SA: *Acacia dealbata, *A. longifolia ssp. longifolia, A. l. ssp. sophorae, A. melanoxylon, and *Citrus spp. (cultivated). The new SA breeding record presented here was obtained from Bryan Haywood who reared two adults in billets of Myrtle Wattle Acacia myrtifolia south of Mount Gambier.

None of the other SA records include host plant details, but interstate adults have been caught on: Banksia marginata, Acacia longifolia ssp. longifolia, A. melanoxylon, Leptospermum spp. and Ozothamnus ferrugineus (Hawkeswood 2006b; Bellamy et al. 2013). All the larval and adult host records need to be considered with caution due to the difficulties with identification in this species group.

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.