Taxonomic revision of the Australian Notoxinae (Coleoptera: Anthicidae) Kejval, Zbyněk Acta Entomologica Musei Nationalis Pragae 2013 suppl. 2013-11-15 53 1 98 Kejval & Cz, 2013 Kejval & Cz 2013 [473,713,1339,1363] Insecta Anthicidae Mecynotarsus Animalia Coleoptera 50 51 Arthropoda species iuvenis sp. nov.  ( Figs 64–66)    Typelocality. Australia, Western Australia, 12 kmS of Kalumburu Mission, 14°25′S 126°38′E.  Type material.  HOLOTYPE: 1 ♂, ‘ 14.25 S 126.38 E CALM Site 13/4  12 kmS of Kalumburu Mission W.A.  7-11 June 1988, T.A. Weir[p] // at light closed forest // AUST. NAT. INS. COLL. [p; green label]’ ( ANIC).  PARATYPES: 5 ♀♀, same data as holotype ( ANIC);  3 ♂♂‘ 16.02S 130.48ENT Jasper Gorge GPS 15 Oct. 2000T. Weir & D. Yeatesat light [p] // ANICSpecimen [p; green label]’ ( ANIC, 1 spec. ZKDC); 2 ♂♂ 1 ♀, ‘ 17.25S 124.56EWA Lennard River,  29 April 1992P. J. Gullan, at light [p] // AUST. NAT. INS. COLL. [p]’ ( ANIC); 1 ♂, ‘ 13.45S 131.34EGPS Butterfly Gorge Nature Pk Douglas RiverNT  19 Jul. 1994, at light T. Weir,A. Roach[p] // AUST. NAT.INS. COLL. [p; green label]’ ( ANIC); 6 ♂♂, ‘ AUSTRALIA, N. Territory Nitmiluk National Park, Edit Falls,  37 malt, 14°10′S 132°06′E,  3.12.2008, St.Jakl leg. [p]’ ( ZKDC, NMPC).   Description( holotype, male). Body length 2.0 mm. Body, legs, and antennae reddish brown. Antero-lateral margins of frons simple. Gular rugules minute and scattered. Clypeal granules minute to indistinct. Setation of head rather evenly short and appressed, dense and finer medially on vertex, coarser to scaly around eyes and ventro-laterally. Antennae moderately long; antennomeres III–V at most nearly twice as long as wide, X about as long as wide; setation fine in apical half, and distinctly coarser to scaly in basal half. Pronotum 1.6 times as long as wide, its lateral margins unevenly shaped, somewhat angled at widest point and then straight to slightly concave while narrowing towards base in dorsal view; posterior collar narrow but distinct, somewhat concealed by scaly setation. Pronotal horn moderately robust and wide, its posterior angles obsolete in dorsal view; horn margins armed with 4 lobules on each side; horn crest distinct, clearly raised, long and rather narrow, with coarse separate rugules on margins; submarginal rugules numerous, small and well-spaced; 5 small median rugules, mostly well-spaced, with some minute granules posteriorly. Setation whitish and reddish (dorsally), largely appressed and scaly, including dorsal surface of pronotal horn; scales on pronotal disc of two sizes / shapes, smaller and narrower or larger and wider, both widely rounded to truncate apically; antebasal paired setae short but distinct (somewhat thickened) laterally and absent medially, another tactile setae absent. Elytra 1.7 times as long as wide; omoplates and postbasal impression absent. Setation scaly, whitish and pale reddish to brownish, somewhat mixed anteriorly and forming darker marking, evenly developed / ordered; scales distinctly elongate, rounded to subtruncate apically, very densely spaced but distinct; erect tactile setae absent. Male characters. Sternum VII with small, sharply bordered median impression near base ( Fig. 64). Tergum VIII and aedeagus as in Figs 65, 66; parameres strongly curved in apical third in lateral view.  Variation.Body length (♂ ♀) 1.8–2.2 mm. Pronotal horn with 4–5 lobules on each side; 5–8 median rugules. Dark markings of elytra in some specimens less distinct to absent.   Differential diagnosis.  Mecynotarsus iuvenis sp. nov.is very close to  M. albellusand also to  M. ziczac, as suggested by the similar form of the parameres. It differs from both of these species by the presence of a small, sharply bordered median impression on male sternum VII, and the long, conspicuously raised setation of male tergum VIII; and from  M. albellusby the evenly narrowing parameres that lack a small denticle / angulation on the lateral margins shortly before the apex.   Etymology.The species name is a Latin adjective,  iuvenis(= young); named in reference to rather detailed differences distinguishing this species from  M. ziczacand  M. albellus.   Distribution. Australia: Northern Territory, Western Australia.   Remarks.Since females of  Mecynotarsus iuvenis sp. nov.cannot really be distinguished from those of  M. ziczac, only males of the former species are included in the typesseries for the localities that are shared between these two species (Jasper Gorge, Edit Falls; females are all tentatively identified as  M. ziczac). 3458064320 1988-06-07 1988-06-11 1988-06-07 ANIC T. A. Weir -14.25 CALM Site 13 / 4 773 126.38 50 51 1 1 holotype 2984775729 1988-06-07 1988-06-11 1988-06-07 ANIC T. A. Weir -14.25 Site 773 126.38 50 51 5 5 paratype 2984775648 2000-10-15 ANIC, ZKDC Weir & D. Yeates -16.02 769 130.48 50 51 GPS 15 4 3 paratype 2984775628 1992-04-29 ANIC Gullan -17.25 Lennard River 767 124.56 50 51 1 1 paratype 2984775764 1994-07-19 ANIC Weir & Roach 51 52 -13.45 Butterfly Gorge Nature Pk Douglas River 774 131.34 50 51 1 paratype 2984775403 2008-03-12 ZKDC, NMPC N. Territory Nitmiluk National Park & St. Australia 37 -14.166667 Edit Falls 1289 132.1 51 52 1 paratype