Two species of Bootanomyia dorsalis wasps introduced to North America from Europe A, B variation in the extent of wing infumation from a single collection of B. dorsalis sp. 2 from Neuroterus ...

Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

At least two different populations of a parasitic wasp native to Europe have been found on opposite coasts of North America. But no one knows how they got there. Reading time 3 minutes There are all ...