Scydmaenus (Corbulifer) tamborinensis Franz

Jałoszyński, Paweł, 2018, ' Monster Scydmaenus' of Australia: revision of subgenus Corbulifer Franz (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 4472 (3), pp. 505-531 : 511-513

Scydmaenus (Corbulifer) tamborinensis Franz

( Figs 17–23 , 55 , 66–68 , 70 )

Scydmaenus (Corbulifer) tamborinensis Franz, 1975: 286 , figs 262–236.

Scydmaenus (Corbulifer) tamborinensis cunninghamensis Franz, 1975: 286 , fig 264, syn. n.

Scydmaenus (Corbulifer) tamborinensis maipotonensis Franz, 1975: 288 , fig 265, syn. n.

Type material. HOLOTYPE of S. tamborinensis tamborinensis : ( AUSTRALIA, QUEENSLAND): ♂, six labels: "Tamborine Mt. / Queensld., Austr. / lg.H.Franz 1970" [white, printed, with handwritten "Pa83" in blue ink on the reverse side], " Scydmaenus / ( Corbulifer ) / tamborinensis / det.H.Franz" [white, handwritten and printed], " ♂ " {white, printed], " Typus " [red, handwritten], " SAMA Database / No. 25-037059" [white, printed], " SAMA Digital Image / 4.9 2 013" [green, printed and handwritten] ( SAM). PARATYPE of S. tamborinensis tamborinensis : ♂, four labels: "Curious / tibiae" [brownish, handwritten], Mt. Tambourine / Q: A. M. Lea" [yellowish, printed], " Scydmaenus / ( Corbulifer ) / tamborinensis / m. / PARATYPUS " [yellow, handwritten and printed], " SAMA Database / No. 25-038180" [white, printed]. HOLOTYPE of S. tamborinensis cunninghamensis : ♂, five labels: "Deviding {sic!} Range / Highway to Warwick / Queensld., Austr." [white, printed, with handwritten "Pa82" in blue ink on the reverse side], " Scydmaenus / ( Corbulifer ) / tamborinensis / ssp. cunninghamen- / sis / m. / det.H.Franz" [white, handwritten and printed], " Typus " [red, handwritten], " SAMA Database / No. 25-037057" [white, printed], " SAMA Digital Image / 4.7. 2013 " [green, printed and handwritten] ( SAM). HOLOTYPE of S. tamborinensis maipotonensis : ♂, six labels: "Umg. Maipoton / Queensld., Austr. / lg.H.Franz 1970" [white, printed, with handwritten "Pa77" in blue ink on the reverse side], " Scydmaenus / ( Corbulifer ) / tamborinensis ssp. / maipotonensis m. / det.H.Franz" [white, handwritten and printed], " ♂ " {white, printed], " Typus " [red, handwritten], " SAMA Database / No. 25-037058" [white, printed], " SAMA Digital Image / 4.7. 2013 " [green, printed and handwritten] ( SAM).

Additional material (69 exx.): QUEENSLAND: 3 ♂♂, 7 ♀♀, Lamington N.P. ( O'Reilly's ), 22- 27.10.1978, Lawrence & Weir, berlesate 655, leaf & log litter ; 1 ♂, Lamington NP, 4km NW O'Reillys, Duck Creek Road , 820 m, 12.04.1993, D.S. Chandler, Berlesate ANIC 1502 , subtropical closed forest, Hoop Pine litter ; 5 ♂♂, 6 ♀♀, Joalah N.P., Tamborine Mt. , 27.56S, 153.12E, 18-21 Oxct. 1978, rainforest, Berlesate, litter, Lawrence & Weir ; 2 ♂♂, Mt. Glorious State Forest , 20- 27.2.1986, Y. Basset leg., ex Argyrodendron actinophyllum subtropical rainforest ; 1 ♂, Mt. Glorious , 800 m, rainforest, 28.06.1978, S. & H. Peck, bark & log litter ; 1 ♂, Mt. Glorious , 27.20S, 152.46E, 21.12.1990, J.F. Lawrence, Berlesate ANIC 1136 , leaf & log litter with fungi ; 2 ♂♂, 1 ♀, Mt Mee, Upper Neurum , 3.9.1979, G. Monteith, QM Berlesate 205, 27°05'S, 152°41'E, rainforest, sieved litter ; 3 ♂♂, 28°19'S, 152°51'E, Levers Plateau , 720 m, 2.12.1991 - 6.1.1992, D. J. Cook, rainforest, intercept trap; 1 ♂, 1 ♀, O'Reillys Guest House , 23.8.1981, G. B. Monteith, QM Berlesate 592, 28°14'S, 153°08'E, rainforest, 900 m, sieved leaf litter ; 1 ♂, 28°06'S, 152°24'E, Spicer's Peak summit, 30- 31.12.1993, 1200m / G. B. Monteith ; 3 ♂♂, 28°11'S, 153°11'E, Lower Coomera , 3.12.1994 - 9.1.1995, G. Monteith & H. Janetzki, pitfall trap, 350m; 2 ♂♂, 2 ♀♀, Binna Burra , 28°12'S, 153°12'E, 12.3.1997, Monteith & Russell, QM Berlesate 919, rainforest, 800 m, sieved leaf litter ; 2 ♂♂, 6 ♀♀, Boombana N.P., 27°24.1'S, 152°47.4', 2.5.2004, C. J. Burwell, Berlesate, rainforest, 440 m; 2 ♂♂, 1 ♀, Morans Falls , 28°19'S, 153°05'E, 15.3.1997, Monteith & Russell, QM Berlesate 924, rainforest, 900 m, stick brushing ; 5 ♂♂, 6 ♀♀, Kroombit Tops , 65 km SW of Gladstone, 22- 26.2.1982, G. Monteith & G. Thompson, QM Berlesate 385, rainforest, 1100 m, sieved litter ; 1 ♂, Mt. Chinghee, 12 km SE of Rathdowney , 28°19'S, 152°58'E, 17.12.1982, Monteith, Yeates & Thompson, QM Berlesate 496, rainforest, 720 m, sieved litter ; 6 ♂♂, Tullawallal, Binna Burra, 28°12'S, 153°12'E, 3.12.1994 - 9.1.1995, G. Monteith & H. Janetzki, intercept trap, 950 m; 1 ♂, Mt. Tenison Woods , 27°19'S, 152°44'E, 15.5.1997, rainforest, 750 m, G. B. Monteith, QM Berlesate 934, stick brushing ; 1 ♂, Bare Rock, 2 km N of Mt. Cordeaux , 28°02'S, 152°23'E, 1100 m, 31.12.1993 - 20.2.1994, G. MOnteith, intercept trap; 1 ♂, Mt. Glorious , Jan.-Mar. 1982, A. Hiller, flight intercept trap ; 1 ♂, Gold Creek Reservoir, 27°28.1'S, 152°52.3'E, 4.11. 2003, 160 m, C. Burwell , dry rainforest berlesate, sifted litter; NEW SOUTH WALES: 1 ♂, Acacia Plat., J. Armstrong ; 2 ♂♂, Mt. Glennie, 16 km E of Woodenbong , 28.23S, 152.46E, 25.11.1982, Monteith, Yeates & Cook, rainforest, 910 m, sieved litter ; 1 ♂, Mt. Glennie, 16 km E of Woodenbong , 25.11.1982 - 3.2.1983, rainforest, 910 m, flight intercept trap (specimens in ANIC, QM and cPJ).

Revised diagnosis. Male metatibia with large glandular broadening in distal half which is much broader than metafemur, mesal tibial margin sinuate, lateral (external) tibial margin concave in proximal half and strongly convex in distal half; aedeagus in dorsal view broadest near base, with distinctly delimited elongate apical portion, which is divided into two very short lateral projections strongly bent dorsad.

Redescription. Body of male ( Fig. 17 ) strongly convex, reddish brown, covered with setae slightly lighter than cuticle; BL 1.95–2.13 mm (mean 2.05 mm).

Head broadest at small eyes, HL 0.38–0.40 mm (mean 0.39 mm), HW 0.40–0.43 mm (mean 0.42 mm); tempora in lateral view as long as 2.5 length of eye, slightly convergent posterad and posteriorly bent mesad at a slightly obtuse angle. Punctures on frons and vertex very fine and shallow, inconspicuous; setae short, sparse and suberect. Antennae slender, AnL 1.03–1.10 mm (mean 1.07 mm), antennomeres I–VI each distinctly elongate, VII and VIII each slightly transverse, IX and X much larger than VIII, each slightly transverse, XI about as long as IX– X combined, nearly twice as long as broad.

Pronotum rounded, broadest slightly behind anterior third; PL 0.55–0.60 mm (mean 0.57 mm), PW 0.48–0.55 mm (mean 0.52 mm). Antebasal pits indistinct. Punctures on pronotal disc very fine and shallow, inconspicuous; setae short, sparse and suberect.

Elytra oval, broadest in front of middle; EL 1.00– 1.13 mm (mean 1.10 mm), EW 0.80–0.88 mm (mean 0.85 mm), EI 1.26–1.41; apices separately rounded. Punctures relatively large and dense but very shallow; setae longer and denser than those on pronotum, suberect to erect.

Metatibia ( Fig. 55 ) in dorsal view with slender proximal half, which is strongly concave dorsally in its submedian region; distal half strongly and abruptly broadened, convex dorsally, with sharp dorsal edge and a short dorsal 'pocket' near middle of external margin bearing a group of dense setae.

Aedeagus ( Figs 18–23 ) moderately slender; AeL 0.41 mm; in dorsal view median lobe broadest near basal third, shallowly and broadly constricted near middle, and rapidly narrowed in subapical region, so that the apical portion is well-demarcated, elongate subtrapezoidal, with apical projections conspicuously short, curved dorsoproximad.

Female. Similar to male but with unmodified metatibiae and distinctly smaller eyes; temple about 5 × as long as eye. BL 2.00– 2.15 mm (mean 2.07 mm); HL 0.38–0.40 mm (mean 0.38 mm), HW 0.40–0.43 mm (mean 0.41 mm), AnL 1.00– 1.05 mm (mean 1.01 mm); PL 0.55–0.60 mm (mean 0.58 mm), PW 0.50–0.55 mm (mean 0.53 mm); EL 1.08–1.15 mm (mean 1.11 mm), EW 0.85–0.90 mm (mean 0.88 mm), EI 1.22–1.32.

Distribution. Queensland and New South Wales; central-eastern coast of Australia ( Fig. 70 ).

Remarks. Franz (1975) differentiated S. tamborinensis tamborinensis , ssp. cunninghamensis and ssp. maipotonensis on the basis of differences in the proportions of antennomeres and aedeagal structures. Examination of the type specimens of each subspecies did not reveal any differences in the antennae. The differences in the aedeagus observed by Franz were due to rotations of the sclerotized endophallic structures, which partly stick out of the ostium and in repose their distal component (the copulatory piece) is visible in lateral view ( Fig. 19 ) as a rodlike projection. The copulatory piece can flip dorsad or proximad ( Figs 21, 23 ); differences in its position can also be seen in the dorsal view ( Figs 18, 20, 22 ).

Males of Scydmaenus tamborinensis can be easily identified on the basis of strongly and abruptly broadened metatibiae ( Fig. 55 ) and the aedeagal apex, which is divided into a pair of small lobes strongly bent dorsad, the bent portions are very short compared to all remaining species of Corbulifer .

Figures

FIGURE 70. Distribution of Corbulifer species.

FIGURES 17–23. Scydmaenus (Corbulifer) tamborinensis Franz. Holotype of S. tamborinensis tamborinensis, habitus of male (17), aedeagus in dorsal (18) and lateral (19) views. Aedeagi of holotype of S. tamborinensis cunninghamensis (20–21) and S. tamborinensis maipotonensis (22–23) in dorsal (20, 22) and lateral (21, 23) views.

FIGURES 55–65. Male metatibia in dorsal view. Scydmaenus tamborinensis Franz (55), S. monstrosetibialis sp. n. (56), S. bellenderanus sp. n. (57), S. pseudorobustus Franz (58), S. kiwarrakianus sp. n. (59), S. gushi sp. n. (60), S. gibraltar sp. n. (61), S. eungellanus sp. n., specimen from Mount William (62) and from Peases Lookout (63), S. fishermontanus sp. n. (64), S. super sp. n. (65).

FIGURES 66–69. Original labels of primary type specimens of previously described Corbulifer species. Scydmaenus tamborinensis tamborinensis Franz (66); Scydmaenus tamborinensis cunninghamensis Franz (67); Scydmaenus tamborinensis maipotonensis Franz (68); Scydmaenus pseudorobustus Franz (69).