World genera of Mastigitae: review of morphological structures and new ecological data (Coleoptera: Staphylinidae: Scydmaeninae) Author Paweł Jałoszyński text Zootaxa 2018 2018-07-30 4453 1 1 119 journal article 29175 10.11646/zootaxa.4453.1.1 348e1a52-72a5-4809-b533-a158fc7a298a 1175-5326 1454920 866690A9-0462-4892-AE29-9AAC623F87B3 † Rovnoleptochromus Jałoszyński & Perkovsky Rovnoleptochromus Jałoszyński & Perkovsky, 2016: 10 . Type species: Rovnoleptochromus ableptonoides Jałoszyński & Perkovsky, 2016 (orig. des.). Diagnosis. Rovnoleptochromus differs from all remaining Leptochromini in one unique apomorphy: maxillary palpomere II lacking cuticular projection but bearing one long bristle; and a combination of characters that, in a different set, occur in other genera: postgenae bearing long bristles but lacking cuticular postgenal processes; maxillary palpomere III broadening from base to apex and with strongly oblique apex; maxillary palpomere IV indistinctly subtriangular, broadest at base; mesocoxal cavities with carinate posterior margins; and metaventrite with a median longitudinal carina. Composition and distribution. Rovnoleptochromus ( Fig. 112 ) comprises one extinct species known from the Upper Eocene Baltic ( Rovno ) amber.