Ant-Like Flower Beetle Mecynotarsus grandior Kejval Z. (2013)

Description (holotype, male). Body length 2.8 mm. Head and pronotum largely reddish brown, pronotal disc distinctly darkened, elytra dark brown, with very vague markings; legs and antennae reddish brown.

Antero-lateral margins of frons simple. Gular rugules of different sizes, anteriorly larger, ordered and fused as in Fig. 139. Clypeal granules minute. Setation of head mostly rather coarsely hairy and appressed, especially around eyes and ventro-laterally, distinctly finer only posteriorly on vertex, and with some raised setae near base. Antennae rather long; antennomeres III–V twice, X nearly 1.7 times as long as wide; setation mostly fi ne, distinctly coarser to scaly on basal 3–4 antennomeres.

Pronotum moderately globose, 1.7 times as long as wide, its lateral margins somewhat unevenly, moderately convex in dorsal view; posterior collar narrow. Pronotal horn robust, moderately wide, its posterior angles slightly indicated in dorsal view (Fig. 151); horn margins armed with 3 rather widely spaced lobules on each side, apical lobule simple, widely rounded; horn crest very conspicuous, situated rather posteriorly and forming semioval rim (interrupted anteriorly); submarginal rugules numerous, mostly coarse, distinctly spaced; single large, median longitudinal rugule and several minute granules scattered posteriorly.
Setation whitish to greyish or pale brownish, scaly, distinctly fi ner, sparser and inconspicuous on pronotal horn dorsally; scales on pronotal disc of two sizes, shorter and appressed or longer and subdecumbent, both elongate, truncate apically and distinctly spaced (surface visible); antebasal paired setae absent medially, difficult to recognize laterally owing to presence of numerous additional tactile setae.

Elytra 1.7 times as long as wide; omoplates and postbasal impression absent. Setation whitish to greyish and brownish, mixed medially and also forming vague markings (Fig. 195), scaly, appressed and evenly ordered; scales linear, rounded to subtruncate apically, dense but distinctly spaced (surface visible); erect tactile setae present, rather short and sparsely scattered, more numerous near base. Male characters. Elytra subapically with a pair of long, moderately oblique, narrow, asetose strips (Fig. 135). Sternum VII moderately produced and rounded apically. Tergum VIII and aedeagus as in Figs 53, 54.

• native

• Northern Territory
• Queensland
• Western Australia