Castiarina jacki Barker, new species (Figs 1 d, 2 g)

Type material: Holotype male, Acacia Plateau, NSW, 26.i.2000, D.Kitchin, SAMA I 21 703. Allotype female, same data as holotype, SAMA I 21 704. Paratype NSW: female, Legume, 20.i.02, D.Kitchin, T.Jack, DKTQ.

Size. Holotype: 12.4 x 4.6 mm. Females, 12.0 x 4.4–13.4 x 4.9 mm.

Description. Colour: Head green with yellow and coppery reflections. Antennomeres: 1–2 blue; 3–4 green; 5–11 coppery­bronze. Pronotum green with blue anterior margin, yellow reflections laterally. Scutellum green with medial dark blue spot. Elytra black with following markings on each elytron: basal yellow spots in middle, elongate yellow mark on margin, medial yellow spots, yellow pre­apical mark merging into a red mark on margin. Ventral surface green with yellow reflections. Legs blue. Setae silver.

Shape & sculpture: Head punctured, median sulcus, moderately elongate mouthparts. Antennomeres: 1–4 obconic; 5–11 triangular. Pronotum with close, shallow punctures, anterior margin straight with definite collar, basal margin bisinuate, laterally parallel­sided basally, then rounded and narrowed to apex. Scutellum scutiform, smooth, flat. Elytra punctate­striate, intervals rounded and smooth, laterally angled outwards from base, rounded at humeral callus, concave, rounded post­medially and narrowed to bispinose apex, marginal spine broad, acute, margin rounded and indented to minute sutural spine, apices diverging. Ventral surface with shallow punctures, sparse, short setae. Mesosternal process inflated. S7 truncate both sexes. Legs, male: legs 2 & 3, pulvilli replaced with medial spine on tarsomeres 1, 2 & 3, spine on 1 larger than 2, 3 larger than both.

Aedeagus: Parameres angled outwards from basal piece, rounded outwards then parallelsided pre­medially, rounded at apex, apical part flattened; penis pointed (Fig. 1 d).

Remarks. Member of the C. spectabilis (Kerremans) species group, which are all C. producta (Saunders) group mimics. This species is close to C. mayoiana Barker. They can be distinguished by comparing male genitalia which are different (Fig. 1 e), the apical spines are more acute in C. mayoiana and the punctures delimiting the striae on the elytra of C. mayoiana are much heavier than in this species.

Distribution. Known only from Acacia Plateau, New South Wales.

Etymology. Named for one of the collectors T. Jack, Brisbane.