Mecynotarsus bidentatus Kejval & Cz 2013, sp. nov.
Creators: name: Kejval, Zbyněk
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Anthicidae
Mecynotarsus
Mecynotarsus bidentatus

description: Mecynotarsus bidentatus sp. nov.
(Figs 30–32)
Type locality. Australia, Western Australia, 13 km EN of Newman, 23°15′S 119°52′E.
Type material. HOLOTYPE: ♂, ‘(23.15S 119.52E) 13 km. E. by N. of Newman, WA. 12.xi.70, E. B. Britton [p] // ANIC specimen [p; green label]’ (ANIC).
Description (holotype, male). Body length 2.4 mm. Body reddish, elytra nearly unicolorous; legs and antennae reddish.
Antero-lateral margins of frons projecting into small, posteriorly pointed process (Fig. 30). Gular rugules of different sizes, anteriorly larger, ordered and fused as in Fig. 139. Clypeal granules indistinct. Setation of head vertex comparatively long medially and with some raised longer setae at base, distinctly shorter and coarser to scaly along eyes, especially ventro-laterally. Antennae rather short; antennomeres III–V about 1.6 times, X nearly as long as wide; setation mostly fine, hairy, distinctly coarser on basal antennomeres, especially antennomere I with distinct scales and several long bristly setae.
Pronotum globose to moderately transverse, 1.4 times as long as wide, its lateral margins rather strongly and nearly evenly convex in dorsal view; posterior collar very narrow and inconspicuous. Pronotal horn robust, moderately wide, subtriangular, its posterior angles distinct in dorsal view; horn margins armed with 4 and 5 lobules laterally, apical lobule asymmetrical (nearly fused with lateral lobule); horn crest distinct, moderately wide, with coarse rugules on margins; submarginal rugules distinct, rather unevenly spaced; 7 median rugules, mostly rather large and asymmetrical, smaller to minute posteriorly. Setation greyish to pale reddish, scaly and appressed; pronotal horn dorsally nearly asetose; scales on pronotal disc rather uniformly large, round shaped, contiguous, entirely covering surface (possibly some smaller scales present), rather opaque; antebasal paired setae absent medially and difficult to distinguish laterally, owing to presence of another tactile setae (about 7 on each side).
Elytra nearly 1.8 times as long as wide; omoplates and postbasal impression absent. Setation very similar to that on pronotal disc, scaly, pale reddish and brownish, forming very vague marking; scales distinctly smaller than those on pronotum, appressed, uniformly rounded, very dense, entirely covering surface as in Fig. 171; scattered tactile setae absent, but some stiff, more raised setae present on humeri (margins sloping towards base).
Male characters. Sternum VII moderately produced and rounded medially. Tergum VIII and aedeagus as in Figs 31, 32.
Differential diagnosis. Mecynotarsus bidentatus sp. nov. is undoubtedly very close to the preceding M. bidens sp. nov. It differs from the latter species by the indistinct clypeal granules, the somewhat asymmetrical metatarsomere II, which is rather strongly enlarged in the apical half, and by the different shapes of the frontal processes and the parameres.
Etymology. The species name is a Latin adjective bidentatus, -a, -um, composed from the words bis (twice) and dentatus (toothed); named in reference to the presence of the paired, tooth-like processes of the frontal margins.
Distribution. Australia: Western Australia.
description: Published as part of Kejval, Zbyněk, 2013, Taxonomic revision of the Australian Notoxinae (Coleoptera: Anthicidae), pp. 1-98 in Acta Entomologica Musei Nationalis Pragae (suppl.) (suppl.) 53 on pages 27-28, DOI: 10.5281/zenodo.4272709