First fossil record of Discocephalinae (Insecta, Pentatomidae): a new genus from the middle Eocene of Rio Pichileufu, Patagonia, Argentina.

ABSTRACT: A new genus and species of Discocephalini, Acanthocephalonotum martinsnetoi gen. n. et sp. n. is described from Río Pichileufú, middle Eocene of Patagonia, Argentina at palaeolatitude ~ 46°S. The new species is the first fossil representative of the Discocephalinae. This taxon is extant in equatorial to subtropical America, and some species reach warm temperate latitudes (Buenos Aires province). The new genus is distinguished from the other genera of Discocephalini by the combination of these characters: interocular width greater than head length; head massive and quadrangular with the anterior margin almost straight; juga touching each other; labrum thick and curved; triangular ante-ocular process extending beyond the eye; broad spine-like antero-lateral process of the pronotum; pronotum

SUBMITTER: Petrulevicius JF 

PROVIDER: S-EPMC4109444 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature