Mecynotarsus auripilosus, Kejval & Cz, 2013

Kejval, Zbyněk & Cz, Domažlice, 2013, Taxonomic revision of the Australian Notoxinae (Coleoptera: Anthicidae), Acta Entomologica Musei Nationalis Pragae (suppl.) 53, pp. 1-98: 23-24

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Mecynotarsus auripilosus

sp. nov.

Mecynotarsus auripilosus   sp. nov.

( Figs 19–21 View Figs 15–22. 15–18 , 138 View Figs 133–140. 133 , 145 View Figs 141–149 , 170 View Figs 168–176 , 190 View Figs 186–193 )

Type locality. Australia, Australian Capital Territory, Uriarra Crossing.

Type material. HOLOTYPE: ♂, ‘ Uriarra Crossing ACT. 30 Dec. 1985 K. R. Pullen [h] // KIM PULLEN COLLECTION [p; orange label] // AUST. NAT. INS. COLL. [p; green label]’ ( ANIC)   . PARATYPES: 1 ♂ 4 ♀♀, same data as holotype ( ANIC)   ; 1 ♀, ‘ 37.41S 145.29E VIC Yarra Riv. 4.5 km SW Healesville, 80m 825, 6 Feb. 1987 A. Newton & M. Thayer [p] // rdy scler. Along river FMHD #87-259 UV light [p] // AUST. NAT. INS. COLL. [p; green label]’ ( ANIC) GoogleMaps   ; 1 ♂, ‘ Cann River VIC 20-25 May 1978 S. & J. Peck [p] // flood debris [p] // AUST. NAT. INS. COLL. [p; green label]’ ( ANIC)   ; 13 ♀♀, ‘ AUSTRALIA: ACT Kambah Pool , Murrumbidgee Riv. X–30–1989 J&RBell [p]’ ( DCDC, 4 spec. ZKDC)   .

Description (holotype, male). Body length 3.0 mm. Body largely brown, at places (pronotal horn, frons, gula) reddish; elytra with yellowish apical spot; legs yellowish, antennae reddish.

Antero-lateral margins of frons simple. Gular rugules small, anteriorly ordered in dense row ( Fig. 138 View Figs 133–140. 133 ). Clypeal granules minute. Setation of head vertex mostly short and fine, appressed, with numerous long suberect setae postero-medially, especially near base. Antennae rather long; antennomeres III–V nearly 2.2 times, X 1.4 times as long as wide; setation mostly rather short and fine, inconspicuous, somewhat coarser and longer on basal antennomere.

Pronotum 1.8 times as long as wide, its lateral margins somewhat unevenly shaped, slightly angled at widest point and straight in narrowing towards base in dorsal view; posterior collar quite distinct. Pronotal horn rather robust, moderately wide, its posterior angles obsolete in dorsal view ( Fig. 145 View Figs 141–149 ); horn margins armed with 5 subtruncate to rounded lobules on each side; horn crest distinct, clearly raised and narrow, with coarse, separate rugules on margins; submarginal rugules distinct and well-spaced; 13 median rugules of different sizes, minute to coarse, mostly rather densely spaced to contiguous. Setation whitish to silvery, comprising short and very fine (not scaly), appressed, surface entirely covering undersetae, and much longer, coarser subdecumbent setae; dorsal setation of pronotal horn largely inconspicuous, except numerous long, stiff raised setae present posteriorly along its crest; about 7 erect tactile setae present laterally on each side; antebasal paired setae present both laterally and medially.

Elytra nearly 1.8 times as long as wide; omoplates and postbasal impression absent. Setation silvery to goldish shiny and brownish, forming rather vague brownish markings and paler apical spot ( Fig. 190 View Figs 186–193 ), evenly developed / ordered, rather coarsely hairy, appressed and sparse (coarsely punctured surface visible, Fig. 170 View Figs 168–176 ); erect tactile setae absent.

Male characters (Paratype). Sternum VII clearly modified ( Fig. 19 View Figs 15–22. 15–18 ), its surface medially asetose and rather glossy. Tergum VIII and aedeagus as in Figs 20, 21 View Figs 15–22. 15–18 .

Variation. Body length (♂ ♀) 2.6–3.0 mm; horn margins with 4–6 lobules on each side; 4–13 median rugules.

Differential diagnosis. Mecynotarsus auripilosus   sp. nov. is conspicuous by its larger size, slender body form (pronotum narrower, its lateral margins unevenly shaped), and mainly by the mostly silvery to goldish shiny setation of elytra, which is rather long, coarsely hairy (setae pointed to finely bifurcate apically), appressed and quite uniform (not double). Moreover, it can be easily recognized by the male characters.

Etymology. Composed from the Latin words aureus (gold) and pilosus, - a, -um (setose); named in reference to the goldish setation of the elytra; adjective.

Distribution. Australia: Australian Capital Territory, Victoria.


Australian National Insect Collection