Descriptions of four new species ofMinyomerusHorn, 1876 sec. Jansen & Franz, 2018 (Coleoptera: Curculionidae), with notes on their distribution and phylogeny

Abstract

This contribution adopts the taxonomic concept approach, including the use oftaxonomic concept labels(name sec. [according to] source) and region connection calculus-5 (RCC–5) articulations and alignments. Prior to this study, the broad-nosed weevil genusMinyomerusHorn, 1876 sec. Jansen & Franz, 2015 (Curculionidae [non-focal]: Entiminae [non-focal]: Tanymecini [non-focal]) contained 17 species distributed throughout the desert and plains regions of North America. In this review ofMinyomerussec. Jansen & Franz, 2018, we describe the following four species as new to science:Minyomerus ampullaceussec. Jansen & Franz, 2018 (henceforth: [JF2018]), new species,Minyomerus franko[JF2018], new species,Minyomerus sculptilis[JF2018], new species, andMinyomerus tylotos[JF2018], new species. The four new species are added to, and integrated with, the preceding revision, and an updated key and phylogeny ofMinyomerus[JF2018] are presented. A cladistic analysis using 52 morphological characters of 26 terminal taxa (5/21 outgroup/ingroup) yielded a single most-parsimonious cladogram (Length = 99 steps, consistency index = 60, retention index = 80). The analysis reaffirms the monophyly ofMinyomerus[JF2018] with eight unreversed synapomorphies. The species-group placements, possible biogeographic origins, and natural history of the new species are discussed in detail.