Cephennomicrus Reitter

Jałoszyński, Paweł, 2008, Taxonomic notes on the Cephenniini (Coleoptera, Scydmaenidae): Status of Coatesia Lea, Cephennomicrus Reitter, and Neseuthia Scott, Zootaxa 1696, pp. 25-36 : 29-30

Genus Cephennomicrus Reitter

Cephennomicrus Reitter, 1907: 297 , type species: Cephennomicrus perpunctillum Reitter, 1907 (monotypy).

Neseuthia Scott, 1922: 201 ; syn. n., type species: Neseuthia typica Scott, 1922 (orig. des.).

Diagnosis. Cephennomicrus differs clearly from all known and diagnosable genera of the tribe in the shape of mandibles, set of ante-basal pits on the pronotum, and the intercoxal process of the mesoventrite. Mandibles are not divided, like in other Cephenniini, into a broad basal part with the sharp cutting edge and a slender, sickle-like apical part specialized in piercing, but they are short and stout, in dorsal view with a subquadrate basal part and not separated, short subtriangular and relatively blunt apex. The mesoventral process separating mesocoxae is short and very broad, in lateral view without vertical foramen (it is much more slender in most other genera, or if nearly as broad, like that in Cephennodes , then in lateral view it bears an oval foramen below the mesocoxal cavity, between meso- and metaventrite.) The pronotum bears four ante-basal pits located along the internal posterior phragma, but in some species one pair of pits may be shallower up to nearly entire reduction, pits may be connected by a transverse groove, or an additional median pit can be seen. Further, the following combination of characters is not known in other genera (although each separately can be found in various taxa): the maxillary palpomere IV very short, subconical, with broadly blunt apex; the prosternal process moderately long, clearly separating procoxae; the median part of the posterior margin of the metaventrite projected posteriorly and forming broad but short process separating metacoxae; the lateral margins of the pronotum are marked as sharp edges visible on the entire length; the base of each elytron bears a pair of small foveae (sometimes well visible only in disarticulated elytra studied in transparent mounts); the humeral denticle weakly marked; the abdomen with six visible sternites; males often have secondary sexual characters, usually located on the frons and vertex.