Review of the Australian Cyllodini (Coleoptera: Nitidulidae: Nitidulinae), with descriptions of new taxa, and notes on the genus Macleayania (Nitidulini) Author Lawrence, John F. Author Kirejtshuk, Alexander G. text Zootaxa 2019 2019-01-14 4544 3 301 334 journal article 27668 10.11646/zootaxa.4544.3.1 db9559f4-2f76-4e07-8ae5-03f0f8e5ad3a 1175-5326 2618373 051BB1F9-4EA6-421E-BA90-933A50547076 Key to the species of Gymnocychramus 1. Colour primarily dark reddish-brown or black ( Fig. 6 ); prothorax wider than combined elytra; sides of pronotum broadly rounded and sides of elytra straight and slightly converging almost to apex; macropunctures on elytra placed more sparsely within longitudinal rows, the distances between them usually greater than a puncture diameter; prosternum strongly tumid; mesal lobe at apex of mentum subacute; ventral surfaces with a number of large, elongate-oval pits lining postmesocoxal lines and anterior edges of metacoxal cavities and occurring on all abdominal ventrites; dorsal lobe of penis ( Figs 62–63 ) about as long as ventral lobe, deeply incised, with small tooth at base of incision; total length 4.70–6.20 mm (mean 5.54).................................................................................................... G. politus Lea - Colour primarily reddish-orange, with elytra black ( Figs 12, 23 ); prothorax as wide as or slightly narrower than combined elytra; sides of prothorax and elytra evenly, continuously curved; macropunctures on elytra placed more densely within longitudinal rows, the distances between them often less than a puncture diameter; prosternum weakly convex; mesal lobe at apex of mentum broadly rounded; ventral abdominal pits, if present, very small; dorsal lobe of penis ( Figs 60–61 ) much shorter than ventral lobe, apically acute, not incised and without tooth; total length 3.00–5.00 mm (mean 3.98)...... G. bicolor sp. nov.