Buprestidae of South Australia
( Jewel beetles )
by Peter J. Lang
Chrysobothris subsimilis   Thomson, 1879
subfamily  Buprestinae » tribe  Chrysobothrini » subtribe  Chrysobothrina
Chrysobothris subsimilis   Adult images
Chrysobothris subsimilis, SAMA 25-021683, female, NW, photo by Peter Lang for SA Museum, 18.1 × 6.7 mm Chrysobothris subsimilis, SAMA 25-021684, male, NW, photo by Peter Lang for SA Museum, 13.9 × 5.3 mm Chrysobothris subsimilis, SAMA 25-021683, female, detail of pronotum with transverse striae, NW, photo by Peter Lang for SA Museum, 18.1 × 6.7 mm Chrysobothris subsimilis, SAMA 25-021684, male, detail of pronotum with transverse striae, NW, photo by Peter Lang for SA Museum, 13.9 × 5.3 mm Chrysobothris subsimilis, SAMA 25-021683, female, showing carinate apical ventrite with tridentate apex, NW, photo by Peter Lang for SA Museum, 18.1 × 6.7 mm Chrysobothris subsimilis, SAMA 25-021684, male, showing non-carinate apical ventrite with quadridentate apex, NW, photo by Peter Lang for SA Museum, 13.9 × 5.3 mm Chrysobothris subsimilis, SAMA 25-021684, male, NW, photo by Peter Lang for SA Museum, 13.9 × 5.3 mm Chrysobothris subsimilis, SAMA 25-021683&4, female and male, NW, photo by Peter Lang for SA Museum
Actual
size¹:
16.0 mm
×
6.1 mm
Measurements (mm)
malefemale
L113.8
13.6 – 14
n = 317.4
16.6 – 18.05
n = 5
L213.5
13.3 – 13.6
n = 317.1
16.2 – 17.8
n = 5
W5.3
5.2 – 5.3
n = 36.6
6.3 – 7
n = 5
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
Chrysobothris subsimilis  Distinctive features

A distinctive, large, dark-coloured species, elongate in body shape, with elytra tapering somewhat acutely towards apex in their posterior 1/3. Medial pronotum in posterior 2/3 raised with prominent closely spaced transverse striae; elytra with discrete and strongly raised ribs, and anterior (basal) foveae pair that are deep and often powdery white within. Apical ventrite with wide incision, bordered by teeth that are bilobed in male (apex quadridentate in male, but tridentate in female which also has a median tooth extending from a median carina).

Notes

A common and widely distributed arid zone species.

Distribution
SA Regions¹:  NWLE
Australian States:  WANTSAVICNSWQLD
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 Chrysobothris subsimilis  (total of 5 beetles)
4
1
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Legend
live emerged adults, count > median value of 4 per quarter month
live emerged adults, count <= median value of 4
live non-emerged adults only, for that quarter month
12
number of active beetles for that quarter month
Chrysobothris subsimilis Breeding record images
Chrysobothris subsimilis, PL4785x, pupa, in Acacia stenobotrya dead branch, LE Chrysobothris subsimilis, PL4785, female, reared adult, from Acacia stenobotrya (PJL 3498) dead branch as pupa, but died during ecdysis, LE, 17.6 × 7.0 mm Chrysobothris subsimilis, PL4785, female, reared adult, from Acacia stenobotrya (PJL 3498) dead branch as pupa, died during ecdysis, LE, 17.6 × 7.0 mm Chrysobothris subsimilis, PL4785, female, reared adult, showing relatively small projection on fore femur, LE, 17.6 × 7.0 mm Chrysobothris subsimilis, PL4785, female, reared adult, showing relatively small projection on fore femur, LE, 17.6 × 7.0 mm Chrysobothris subsimilis, PL4785, female, reared adult, from Acacia stenobotrya (PJL 3498) dead branch, pronotum with horizontal striae, LE, 17.6 × 7.0 mm Chrysobothris subsimilis, PL4785, female, reared adult, from Acacia stenobotrya (PJL 3498) dead branch, apical abdominal ventrite with carina and tridentate apex, LE, 17.6 × 7.0 mm
Larval host plant
records sites SA regions¹ family adult ex pupapupa
21LEF11
Legendrecordscount 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 names in green are hyperlinked to a matching host species page with plant photos.
Plant family
Code records % host plant taxa
F Fabaceae 2 100% 1
Position in larval host
positionrecordssitesadult ex pupapupa
dead stem2111
Host plant notes

The single breeding record here, in River Cooba Acacia stenobotrya, is based on an incompletely developed adult reared from a pupa. Originally it was treated here as C. mastersii due to its bright colouration, but this is now attributed to its immaturity and it is identified as C. subsimilis. This is supported by: details of the apical abdominal sternite including its flat shape, median carina, and tridentate apex characteristic of females in this species; the very shiny sternum with sparse punctae including some that are small and indistinct; and the posterior half of the median pronotum bearing well-developed, closely spaced and coalescing horizontal striae/ridges.

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.