(Penn State) A study documenting bees that are reported to occur in Pennsylvania has found the presence of 437 species, including 49 never before recorded in the state. Researchers said the resulting checklist of bees in the commonwealth also identifies species not native to North America and several native species that may be of conservation concern.
(Twitter, Laura Russo @lrusso08) Our paper on pollen nutrition and invasive thistles is out! Why is an invasive thistle so attractive to resident bees in Pennsylvania? We found that it might be because it has high pollen protein.