Leafcutter bees (Megachile gentilis) lived in the area around the La Brea Tar Pits for the last 40,000 to 50,000 years.
The anatomical examination conducted by the researchers indicates the bees have changed very little since the Late Pleistocene.
The examination of the nest and the materials the nest was composed of indicates that ancient leafcutter bees preferred a moderately moist climate and inhabited lower elevations during the Late Pleistocene. The leaves that composed the cells in which the bee pupae developed were traced to a region near the nest site that probably was near a lake or river.
This is one of the few exacting examinations of insects recovered from the La Brea Tar Pits and is indicative of the wealth of information stored in insect fossils. examiner.com / Link 2
Related video: Evolutionary Biology Research / F. Robin O'Keefe and Julie Meachen / Page Museum
Vídeo YouTube por Page Museum at the La Brea Tar Pits el 10/4/2014 añadido a Paleo Vídeos > Prehistoria Universal > L.R.2.6 nº 38.