3 documents found, page 1 of 1
Evidence for the evolution of eusociality in stem ants and a systematic revisio...
Boudinot, Brendon E; Richter, Adrian; Katzke, Julian; Chaul, Júlio C M; Keller, Roberto A; Economo, Evan P; Beutel, Rolf Georg; Yamamoto, ShûheiIt is generally assumed that Cretaceous stem ants were obligately eusocial, because of the presence of wingless adult females, yet the available evidence is ambiguous. Here, we report the syninclusion of a pupa and adult of a stem ant species from Mid-Cretaceous amber. As brood are immobile, the pupa was likely to have been transported by an adult. Therefore, the fossil substantiates the hypothesis that wingles...
New species of Paraodontomma from mid-Cretaceous Burmese amber with muscle tiss...
Li, Yan-Da; Yamamoto, Shûhei; Huang, Di-Ying; Cai, Chen-YangThe third member of the extinct ommatid genus Paraodontomma is reported from mid-Cretaceous Burmese amber. Our observation confirms the transverse ridges on elytra as a diagnostic character for the genus. Paraodontomma leptocristatum sp. nov. differs from previously reported congeners mainly in head subquadrate and without prominent protuberances, pronotal disc without prominent ridges, elytral ridges indistinc...
A miniaturized ommatid beetle in mid-Cretaceous Burmese amber (Coleoptera: Arch...
Li, Yan-Da; Yamamoto, Shûhei; Huang, Di-Ying; Cai, Chen-YangRecent findings of ommatids from mid-Cretaceous Burmese amber have greatly increased our knowledge on the Mesozoic diversity of Ommatidae. Here, we report the first distinctly miniaturized ommatid species, Miniomma chenkuni gen. et sp. nov., entombed in mid-Cretaceous amber from northern Myanmar. This new fossil species is characterized by its small body size (less than 2 mm long) and subglobular metacoxae. Our...