First fossil of Discocephalinae (Insecta: Heteroptera): a new genus from the Eocene of Patagonia, Argentina

PETRULEVICIUS, J. F. Y POPOV, Y.

ZOOKEYS

PENSOFT PUBLISHERS

Lugar: SOFIA; Año: 2014 vol. 422 p. 23 - 33

1313-2989

A new genus and species of Discocephalini, Acanthocephalonotum martinsnetoi gen. n. et sp. n. is described from Río Pichileufú, middle Eocene of Patagonia, Argentina. 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. 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 explanate and bean shaped; scutellum triangular with a circular tongue reaching the anterior side of abdominal segment 7; and wings well developed with membrane just surpassing end of abdomen.