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On the skimming hypothesis of the origin of insect flight

100%

Rasnitsyn A. P.

nr Suppl.

The skimming hypothesis of the origin of insect flight is considered in several possible scenarios. No scenario is found to be in agreement with available information about the insect fossil record and the environments of early insect evolution.

A new family of ceraphronoid wasps from Early Cretaceous Alava Amber, Spain

51%

Ortega-Blanco J. , Rasnitsyn A. P. , Delclos X.

2010

tom 55

nr 2

265-276

Radiophronidae, a new ceraphronoid fossil family including two new genera and species, is described here from the Early Cretaceous (Albian) amber from the Basque Cantabrian Basin (Spain). Radiophron ibericus gen. et sp. nov. and Microcostaphron parvus gen. et sp. nov. are described from eight and one specimens respectively. The new fossils show some similarities with the extinct family Stigmaphronidae but are distinguished from it and the extant ceraphronoids mainly by the presence of not fused radial and costal veins, among other characteristics. A first cladistic analysis retrieves Radiophronidae as the basal sister−group to all other ceraphronoids (Ceraphronidae, Megaspilidae, and Stigmaphronidae).

A new Early Cretaceous flea from China

45%

Zhang Y. , Shih C. , Rasnitsyn A. P. , Ren D. , Gao T.

nr 1