Paleosorius Ortega-Blanco, Chatzimanolis, and Engel

Blanco, Jaime Ortega-, Chatzimanolis, Stylianos, Singh, Hukam & Engel, Michael S., 2013, The Oldest Fossil Of The Subfamily Osoriinae (Coleoptera: Staphylinidae), From Eocene Cambay Amber (India), The Coleopterists Bulletin 67 (3), pp. 304-308 : 305

Paleosorius Ortega-Blanco, Chatzimanolis, and Engel , new genus

Type Species. Paleosorius cambayensis Ortega- Blanco, Chatzimanolis, and Engel, new species.

Diagnosis. Body elongate, thin, ca. 6.5–7.0 times longer than wide, body parallel-sided, virtually without constrictions. Head laterally straight, glabrous; head and pronotum contour continuous, separated by shallow furrow and not by neck-like constriction; ocelli absent; compound eyes placed laterally between mid-length and back of anterior third of head; mandibles short, not falciform (molar lobes and palpi not visible); antenna composed of 11 antennomeres, not clubbed; antennal insertion laterally concealed, anterior to compound eyes; antennomere I subequal to or slightly shorter than antennomeres 2 and 3 combined, remaining antennomeres elongate, longer than wide. Pronotum longer than wide. Elytra sub-rectangular, more than twice as long as wide, smooth, without visible sculpture (not punctured or striated). Legs with few setae, spines absent; procoxae anteriorly convex, posteriorly flattened (possibly taphonomical); femora flattened, quite arched, with multiple longitudinal striae; protibia without ctenidium; tarsi 5-segmented. Abdomen with 6 clearly visible segments, not carinate, parallelsided, without evident suture; abdominal segments without ‘paratergites’, unmargined; tergites (III– VIII) dorsally exposed, with segment II barely exposed (perhaps due to preservation); segment VIII reduced and rounded.

Etymology. The new genus-group name is a combination of the prefix paleo- and the genus name Osorius Guérin-Méneville, 1829 . The name is masculine.