Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar Author Darby, Michael text Zootaxa 2017 4242 2 233 254 journal article 36307 10.11646/zootaxa.4242.2.2 c4e5d710-edf2-4928-b53d-22c211fcad53 1175-5326 376374 0DD1868D-4EF5-4FB7-AEE9-372644800A79 Micridium inornatum sp. n. ( Figs. 18 , 47 , 80 ) Antennomeres 3–11 length 0.26 mm , 4–8 elongate, narrowed towards base. Width across eyes 0.22 mm . Mentum lateral margins almost parallel with slight medial insinuations, submentum with 3 setae. Pronotum without sculpture or depressions, sides evenly rounded, hind angles almost obscured, length 0.17 mm , width 0.28 mm , Fig. 18 . Scutellum without any distinctive features. Mesoventrum: keel between mesocoxae wide and flattened, Fig. 47 . Mesepiventra with distinct reticulation, Fig. 47 . Mesocoxae widely separated, Fig. 47 . Metaventrum: metepiventral sutures reaching midpoint only, posterior intercoxal process straight between lateral points. Wings of usual ptiliid type . Male: not known. Female: spermatheca Fig. 80 . Etymology . After the smooth appearance of the pronotum lacking linear depressions. Diagnosis . The wide separation of the mesocoxae will quickly separate this species from all others except johnsoni and elegans . Type data : Holotype : ♀ , Bolivia , Cochabamba , BOL / Nov 2013/03. ca 8km E of Villa Tunari , sifting rotten wood, Winkler app. extr., GPS 23 S. 16° 59' 12" E . 65° 20' 47", 298m , 22.xi.2013 . P. Baňař lgt. ( UASC ). Pinned on a small piece of clear acetate as a disarticulated slide using Euparal as the mountant . Paratype : ♀ , same data as holotype ( MMBC ); the specimen was found with the elytra missing.