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

Petrulevičius JF, Popov YA - Zookeys (2014)

Bottom Line: 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 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.

View Article: PubMed Central - HTML - PubMed

Affiliation: División Paleozoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, La Plata (1900), and CONICET, 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 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.

No MeSH data available.


Habitus of Acanthocephalonotum martinsnetoi gen. n. et sp. n. Holotype specimen MAPBAR 4137 A Photograph B line drawing. Scale bars represent 1 mm.
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Figure 1: Habitus of Acanthocephalonotum martinsnetoi gen. n. et sp. n. Holotype specimen MAPBAR 4137 A Photograph B line drawing. Scale bars represent 1 mm.

Mentions: Figs 1, 2


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

Petrulevičius JF, Popov YA - Zookeys (2014)

Habitus of Acanthocephalonotum martinsnetoi gen. n. et sp. n. Holotype specimen MAPBAR 4137 A Photograph B line drawing. Scale bars represent 1 mm.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4109444&req=5

Figure 1: Habitus of Acanthocephalonotum martinsnetoi gen. n. et sp. n. Holotype specimen MAPBAR 4137 A Photograph B line drawing. Scale bars represent 1 mm.
Mentions: Figs 1, 2

Bottom Line: 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 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.

View Article: PubMed Central - HTML - PubMed

Affiliation: División Paleozoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Paseo del Bosque s/n, La Plata (1900), and CONICET, 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 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.

No MeSH data available.