Monograph on the Cillaeinae (Coleoptera: Nitidulidae) from the Australian Region with comments on the taxonomy of the subfamily Author Kirejtshuk, Alexander G. Author Kovalev, Alexey V. 0000-0003-3328-8867 agk@zin.ru text Zootaxa 2022 2022-02-23 5103 1 1 133 journal article 112023 10.11646/zootaxa.5103.1.1 1bf32ba1-8e0d-4435-ba04-6d7dbd0d7238 1175-5326 6245709 9E1A72E7-3862-44F7-B69F-ECE64B239FF9 29. Brittonoma mandibulare ( Kirejtshuk, 2011 ) , comb. nov. Figs 23 , AH Brittonema mandibulare Kirejtshuk, 2011: 58 ; Australia , Queensland . Specimens examined . Australia , QLD : Type series examined by Kirejtshuk (2011) ; 2 exx ( NHML , ZIN )—“ Mt. Lewis Road , via Julatten, N QLD, 6.XII.1975 , Walford Higgins”, “ BMNH ( E ), 2005—4, E. Gowing-Scopes Collection. ” Diagnosis . This species differs from its another Australian congener in the larger and much wider body ( 11.5– 15.5 mm ), head with truncate anterior edge, gentle outline of temples behind eyes, transverse depression between antennal insertions, more projecting and not subquadrangular male labrum, strong sexual dimorphism in the structure of mandibles, much shorter abdominal segments uncovered by elytra, truncate apex of pygidium in both sexes, subacute apex of the male anal sclerite, wider mentum, wider tarsi, strongly dentate tarsal claws, finer punctation on the dorsum (except for elytra) and double rows of punctures in weak striae between longitudinal elevated interstrial spaces on elytra, and also in the structure of the male genitalia.