evolutionary mechanism

tags: researchblogging.org, Brown paper wasp, Polistes fuscatus, hymenoptera, evolution, eusociality, social behavior Brown paper wasp , Polistes fuscatus. Fairport, New York, USA. 2003. Many thanks to Alex Wild for sharing his amazing images here. Thanks to Elizabeth Tibbetts for the species identification. [larger view] Eusociality, or "true social behavior", is the most extreme form of cooperative sociality known. Due to its seemingly altruistic nature, eusociality has provided many interesting challenges for evolutionary theory. Eusociality, as exemplified by ants, bees and wasps, is…