Buprestidae of South Australia
( Jewel beetles )
by Peter J. Lang
Neocuris dichroa   Fairmaire, 1877
subfamily  Buprestinae » tribe  Curidini » subtribe  Neocurina
Neocuris dichroa   Adult images
Neocuris dichroa, PL3819B, female, on Eutaxia microphylla (PJL 3117), for photo, SE, 5.5 × 2.4 mm Neocuris dichroa, PL3819B, female, on Eutaxia microphylla (PJL 3117), for photo, SE, 5.5 × 2.4 mm Neocuris dichroa, PL3819A, female, on Eutaxia microphylla (PJL 3117), for photo, SE, 5.9 × 2.5 mm Neocuris dichroa, PL1349, female, from Eucalyptus phenax ssp. phenax, EP, 6.8 × 2.9 mm Neocuris dichroa, PL3819B, female, on Eutaxia microphylla (PJL 3117), for photo, SE, 5.5 × 2.4 mm
Actual
size¹:
5.7 mm
×
2.5 mm
Measurements (mm)
malefemale
L15.7
4.5 – 6.8
n = 546.1
5.5 – 6.8
n = 4
L25.7
4.5 – 6.75
n = 535.7
5.35 – 6.05
n = 3
W2.5
1.95 – 2.95
n = 542.6
2.4 – 2.9
n = 4
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
Neocuris dichroa  Distinctive features

Two-tone colouration: the elytra vary in colour from brownish-red to purple to purplish-black, often with some gold reflections, while the head, pronotum and ventral side are most often metallic green (with some blue iridescence marginally), but may also be gold or blue.

Notes

A common and widespread species, although I have only occasionally encountered adults in the field. However, I have obtained numerous records of this species from coloured lures and as breeding records from its larval host plants. The relatively few field collections have been made either on nectar-rich Myrtaceae flowers (as is typical for the genus) or on the foliage of several unrelated plant species. By far the highest record count comes from green lures (with blue ones a distant second). This suggests an attraction to foliage, but it is probably more about finding mates, since there is preponderance of males and very few females, recorded in this way.

The discovery of this species' larval host plant came as a surprise.

Distribution
SA Regions¹:  EPNLMUKISE
Australian States:  WASAVIC
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 Neocuris dichroa  (total of 9 beetles)
2
1
1 2 2
1
Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Legend
live emerged adults, count > median value of 2 per quarter month
live emerged adults, count <= median value of 2
live non-emerged adults only, for that quarter month
12
number of active beetles for that quarter month
Adult host plants
beetles sites SA regions¹ family position on host plant
11MUF
11MUE
11EPM
11EPM
11KIM
11KIM
11EPA
Legendbeetlescount of beetles collected from, or sighted on, host plant taxon
sitescount of major sites (unique 10 km grid cells +/- some distinct approximate localities)
Plant names in green are hyperlinked to a matching host species page with plant photos.
Plant family
Code beetles % host plant taxa
M Myrtaceae 4 57% 4
A Asteraceae 1 14% 1
E Euphorbiaceae 1 14% 1
F Fabaceae 1 14% 1
Position on adult host
positionbeetlessites
on flowering plant43
on foliage or non-flowering plant33
Lure affinity
colour beetles sites SA regions¹
bright green2763EP, SE
blue1007EP, MU, SE
yellow32SE
white21SE
orange11SE
Neocuris dichroa Breeding record images
Neocuris dichroa, PL3926, larva, in Eutaxia diffusa x E. microphylla (PJL 3192) stem, MU, 12.0 × 2.4 mm Neocuris dichroa, PL3926, larva, in Eutaxia diffusa x E. microphylla, MU, 12.0 × 2.4 mm Neocuris dichroa, PL3821A, larva, from Eutaxia microphylla (PJL 3119) stem base, dorsal & ventral, SE, 13.6 × 2.4 mm Neocuris dichroa, PL3821A, larva, from Eutaxia microphylla (PJL 3119) stem base, dorsal & ventral, SE, 13.6 × 2.4 mm Neocuris dichroa, PL4797, prepupa, from Eutaxia diffusa (PJL 3502) stem base, MU, 8.8 × 2.9 mm Neocuris dichroa, PL4796Ax, male, pupa, from Eutaxia diffusa (PJL 3502) stem base, MU, 8.1 × 3.3 mm Neocuris dichroa, PL4796B, pupa, from Eutaxia diffusa (PJL 3502) stem base, MU, 6.9 × 2.8 mm Neocuris dichroa, PL3819A, female, non-emerged adult, in Eutaxia microphylla (PJL 3117), SE, photo by A.M.P. Stolarski, 5.9 × 2.5 mm Neocuris dichroa, PL4129, male, non-emerged adult, in Eutaxia microphylla (PL3297) stem, SE, photo by A.M.P. Stolarski, 6.1 × 2.6 mm Neocuris dichroa, PL3818, female, dead non-emerged adult, from Eutaxia microphylla (PJL 3117) stem base, SE Neocuris dichroa, PL3817, dead non-emerged adult, in Eutaxia microphylla (PJL 3117) stem base, SE, photo by A.M.P. Stolarski Neocuris dichroa, PL3817, dead non-emerged adult, in Eutaxia microphylla (PJL 3117) stem base, SE Neocuris dichroa, PL3817, dead non-emerged adult, in Eutaxia microphylla (PJL 3117) stem base, SE Neocuris dichroa, PL3928E, dead non-emerged adult, in Eutaxia diffusa x E. microphylla (PJL 3192) stem base, MU Neocuris dichroa, PL3928E, dead non-emerged adult, in Eutaxia diffusa x E. microphylla (PJL 3192) stem base, MU Neocuris dichroa, PL4077A, dead non-emerged adult, in Eutaxia diffusa x E. microphylla (PJL 3192) stem, MU Neocuris dichroa, PL4077A, dead non-emerged adult, in Eutaxia diffusa x E. microphylla (PJL 3192) stem, MU Neocuris dichroa, PL4738A, dead non-emerged adult, in Eutaxia diffusa X E. microphylla (PJL 3192) stem, MU Neocuris dichroa, PL4737A, dead non-emerged adult, from Eutaxia diffusa (PL3159) stem, MU Neocuris dichroa, PL4737A, dead non-emerged adult, from Eutaxia diffusa (PL3159) stem, MU Neocuris dichroa, PL4543A, dead non-emerged adult, in Eutaxia diffusa (PJL 3400) stem base, MU, photo by A.M.P. Stolarski Neocuris dichroa, PL4543B, dead non-emerged adult, from Eutaxia diffusa, MU Neocuris dichroa, PL3821A, larval host plant, Eutaxia microphylla (PJL 3119), SE, photo by A.M.P. Stolarski, 13.6 × 2.4 mm Neocuris dichroa, PL3821A, larval host plant, Eutaxia microphylla (PJL 3119), SE, photo by A.M.P. Stolarski, 13.6 × 2.4 mm Neocuris dichroa, PL3926, larval host plant, Eutaxia diffusa X E. microphylla (PJL 3192), MU, 12.0 × 2.4 mm Neocuris dichroa, PL3926, larval host plant, Eutaxia diffusa X E. microphylla (PJL 3192), MU, 12.0 × 2.4 mm
Larval host plants
records sites SA regions¹ family adult liveadult deadadult ex pupapupalarva
3511EP, MU, SEF41417
Eutaxia diffusa X E. microphylla241MUF159
83MUF4121
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 43 100% 2
Position in larval host
positionrecordssitesadult liveadult deadadult ex pupapupalarva
root crown1256123
stem base2993818
stem2541195
unknown111
Host plant notes

Breeding records of this species were first discovered by A.M.P. Stolarski in the bases of Small-leaf Eutaxia Eutaxia microphylla plants. They have proved to be very common in this species over a wide area of SA. They have now also been found in the only other Eutaxia species in SA, Long-leaf Eutaxia E. diffusa, as well as in a population of putative hybrids between the two species near Callington.

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.