Throscidae (Coleoptera) relationships, with descriptions of new fossil genera and species Author Muona, Jyrki text Zootaxa 2019 2019-04-03 4576 3 521 543 journal article 10.11646/zootaxa.4576.3.6 7abdc62c-c350-49dd-8060-4ed64da07362 1175-5326 3715772 56BC8573-D4A1-4B18-9BF6-7AB5F7984BFD Trixagus parvulus new species Fig. 15 Type material . Holotype labeled: Trixagus parvulus n. sp. / HOLOTYPE / J.Muona des. 10-2015. Found from Jantarny.Another label with following data included: Baltischer Bernstein / Fundort : Balticum. Jantarny ( Russland )/ Alter : Tertiär , Eozän 28-54 Mio. Jahre/ Inklusen : Käfer , Dungmücke /www.fossilien.de. Embedded in rectangular piece Baltic Amber piece, 19 mm x 16 mm x 3 mm, sex unknown but most likely female. Age 50 My. Hirsute plant remains are present as well as a nematoceran dipteran ( Fig. 26 ). Dorsum poorly visible, specimen slightly dorsoventrally compressed, venter entirely visible. Length 2.0 mm . Diagnosis . The presence of flattened, grooved tibiae in combination with absence of tarsal grooves places this species in Trixagus . The distinctly but not deeply emarginated eyes ( Fig. 15 ) separate T. parvulus from all known species except the extant T. dermestoides . T. parvulus is smaller, more dorsally convex, has a wider pronotum and less emarginated eyes than T. dermestoides . The Eocene fossil species T. majusculus Kovalev, Kirejtshuk & Nel is quite similar in form, but it is larger and has deeply excised eyes (Kovalev et al ., 2012). FIGURE 26. Trixagus parvulus n. sp. , holotype. Description . Form fairly wide, pronotum convex, sides evenly rounded to hind angles ( Fig. 16 ). Elytra bulbous, with sharp, minutely punctate striae, interstices with much larger, flat, moderately dense punctation ( Fig. 17 ). Abdomen and metathorax with coarse, moderately dense punctation, hypomera with dense and coarse punctation. Antennae with stout, well-developed club, a9 and a10 transverse, a11 longer than wide ( Fig.16 ). Etymology . One of the smallest known Trixagus species and the smallest fossil one.