Systematic review and phylogenetic analysis of the tribe Scotobiini (Coleoptera: Tenebrionidae)

VIOLETA A. SILVESTRO

Indiana

Simposio; International Tenebrionoidea Virtual Symposium VI; 2021

Scotobiini is a tribe with species adapted to live in arid and semi-arid environments of Western and Southern South America. The tribe is composed of 115 species/subspecies arranged in six genera, namely: Ammophorus Guérin-Méneville, Diastoleus Solier, Emmallodera Blanchard, Leptynoderes Solier, Pumiliofossorum Silvestro & Giraldo, and Scotobius Germar. This study presents the diagnosis, updated distribution and morphological phylogeny of the tribe Scotobiini and its six genera. The performed morphological phylogeny shows the monophyly of the tribe based on last tarsomere of foreleg with a longitudinal groove on the anterior margin and the presence of clusters on dome-shaped placoid sensoria on the apex of the last antennomere, which are also visible on the apical surface of antennomeres VIII?X. The phylogeny also shows the sister relation of Ammophorus with Pumiliofossorum and of Diastoleus with Leptynoderes, all monophyletic clades, and the polyphyletic origin of Scotobius.