| effects of the insect growth regulator, novaluron on immature alfalfa leafcutting bees, megachile rotundata. | alfalfa leafcutting bees, megachile rotundata f. (hymenoptera: megachilidae), are the most common pollinators of alfalfa in the pacific northwest. reports from users of m. rotundata in idaho, utah and colorado have indicated exceptionally poor bee return from fields treated with novaluron to control lygus spp. our goal was to evaluate novaluron toxicity to immature m. rotundata using two different possible mechanisms of exposure. one goal was to assess immature mortality via treating nectar-poll ... | 2011 | 21539417 |