Pristoderus saccharatus Pascoe 1870, comb. n.

(Figs 3f, 5f, 7f)

Byrsax saccharatus Pascoe, 1870: 95. In Tarphiomimus: Carter, 1939: 297.

Types. Holotype: Australia, Queensland, Pine Mountain, near Ipswich (in a Boletus) (BMNH).

Other specimens examined. New South Wales: Carrai Plateau, Via Kempsey, 3-5.i.1967, G. Monteith [Ga: 30.832S 152.251E] (3, UQIC).

Queensland: (1, UQIC); 17.379S 145.774E, Mt. Bartle Frere, Bobbin Bobbin Falls, 646m, Pyrethrum, 18 Nov 0 9, G.B. Monteith & F. Turco, trees & logs, 18635 (1, QMBA ethanol coll.); Bunya Mtns, 2-4.v.1964, G. Monteith [Ga: 26.850S 151.567E] (1, UQIC); Bunya Mts, 17-18.ix.1966, G. Monteith [Ga: 26.850S 151.567E] (4, UQIC; QM photo PS 1761); Bunya Mts S.E, 17-18.ix.1966, B. Cantrell [Ga: 26.850S 151.567E] (4, UQIC); Bunya Mts., 22.i.38, 2000', N. Geary [Ga: 26.850S 151.567E] (1, AM); Upper Canungra, 25.xii.1971, G.B. Monteith [Ga: 28.200S 153.133E] (1, UQIC); 27.926S 153.193E, Curtis Falls, Tamborine, 520m, Pyrethrum, 26 Aug 10, G.B. Monteith, rf, 34525 (1, QMBA ethanol coll.); 27°14’S 152°15’E, Mt Deongwar, 3 km S, RF, 27.xii.1998, Monteith, pyr. Trees, 450m, 7554 (1, QMBA); 27°27’S 152°54’E, Enoggera Res., site 8, 27.i–15.iii.2000, G. Monteith & J. Holt, R/F, pitfall, 100m, 9219 (2, QMBA); 28.198°S 153.317°E, Mt. Gannon, 500m, rainforest, 29 Nov 2010, 34741, bark spray, G.B. Monteith (1, QMBA ethanol coll.); Mt. Glorious,. xi.1971 [Ga: 27.333S 152.767E] (1, UQIC); 28.188S 153.121E, Lamington N.P., Lahey Mem., 746m, Pyrethrum, 2 Nov 0 9, G.B. Monteith, 18585 (1, QMBA ethanol coll.); 28.188°S 153.121°E, Lamington NP, IBSCA Qld, plot# IQ-700-B, 775m, 21–26.x.2006, rainforest, R. Menendez & G. Monteith, fungus pitfall, 30712 (1, QMBA); Lever's Plateau Via Rathdowney, 18.iv.1964, G. Monteith [Ga: 28.211S 152.863E] (1, UQIC); National Pk, xii.1921, H. Hacker [Ga: 28.256S 153.134E] (1, QMBA); Pine Mountain (2, AM); 27.930S 153.206E, Tamborine, Palm Grove, 500m, Pyrethrum, 26 Aug 10, G.B. Monteith, rf, 34522 (1, QMBA ethanol coll.); Tamborine Mtn, 2.x.11, H. Hacker [Ga: 27.973S 153.198E] (1, QMBA); Tamborine Mts, 24.xii.28, E. Sutton [Ga: 27.973S 153.198E] (3, QMBA); Tamborine Mts, E. Sutton [Ga: 27.973S 153.198E] (2, QMBA); 17.173S 145.647E, Tinaroo Lake, 10.5 km E Tinaroo Falls, 734m, Malaise, 17–24 Nov 0 9, G.B. Monteith & F. Turco, 18623 (1, QMBA ethanol coll.); same locality, Pyrethrum, 17 Nov 0 9, G.B. Monteith & F. Turco, trees & logs, 18621 (1, QMBA ethanol coll.).

Diagnosis. Among the species with pronotal median process distinctly protruding over the head, P. saccharatu s differs by pronotal lateral notch circular and almost closed.

In many of the examined collections, specimens identified as P. saccharatus belong to P. c h lo re us sp. n.

Re-description. Body length: 7.0 mm.

Body convex, about 1.5–2 times as long as wide (ratio max length/max width: 1.75–1.77); colour brown, darker on central and apical portion of elytra, lighter on pronotum; body vestiture consisting of short, dense, recumbent whitish setae, holding a coat of dirt which forms a uniform encrustation.

Head transverse; eyes protruding lacking interfacetal setae; long, fine setae just posterior to eyes; supraorbital carina raised, indented with a distinct upwardly directed, pointed tubercle at posterior end, above the eye; supraantennal carina distinctly raised, frontal edge indented; antennal insertion frontal, just below the edge of supraantennal carina; antennae 11-segmented with a distinct 3-segmented club; antennomere I slightly elongate, about as long as III; II subspherical; III distinctly longer than II; IV–VIII from subcylindrical to subspherical gradually decreasing in length; IX–XI transverse to form a rather loose club.

Pronotum distinctly transverse (pronotal length/width: 0.64), as wide as elytra; dorsal median process, anteriorly prominent and long, reaching anterior margin of head, slightly sloping in lateral view with pointed tubercles on dorsal edge; antero-lateral margins widely lobate (7–8 lobes), expanded posteriorly to form a lateral notch, widely circular; two admedian upwardly pointed tubercles in middle.

Elytra about 1.1 times as long as wide (elytral length/width: 1.10–1.13), with straight lateral margins and distinctly indented margins; strongly prominent tubercles along 3rd and 5th intervals; 3rd interval with tubercles variable in size and shape, joined to form a crest, weakly zigzag; proximal third of crest convergent, reduced to digitiform tubercles; apical tubercle distinctly raised, with edge smoothly indented, pointing backwards; 5th interval with basal tubercle larger than others on same interval, with pointed edge.

Distribution and habitat occurrence. NE and SE Queensland and NE New South Wales (Fig. 14 c); most of the records are from upland subtropical rainforest with a few from lowland subtropical rainforest in SE Qld and upland tropical rainforest in the Wet Tropics and a single record from upland temperate rainforest (Carrai Plateau in NSW).