![]() ![]() The Northern species is known for having red segments on its body while the dark Southern species found in California are all black. The Northern and the Southern species arose. This dark-colored bee was once widespread even in the Northern parts of the country. However, its numbers are dropping around San Francisco where it remains one of the few bumble bees in the area. The Black-tailed Bumble Bee (Bombus melanopygus) is common in many areas of California. Black-tailed Bumble Bee Black-tailed Bumble Bee Some theories suggest the success of the Yellow-faced Bumble Bee pollination in tomato greenhouses comes down to timing.īees know where the tomato plants are fully ready to be pollinated by counting on an innate pollination clock humans can’t replicate. Scientists don’t know the explanation for their tomato pollination success. Tomatoes grow larger, riper, and with more seeds when pollinated by the Yellow-faced Bumble Bee as opposed to when pollinated by humans. It’s estimated their pollination effects are superior to the pollination of tomatoes that humans account for. Yellow-faced Bumble bees are the most important pollinators of greenhouse tomatoes in California. This species has been shown to select the habitat it lives in depending on the diversity of the flora it finds there. The Yellow-faced Bumble Bee (Bombus vosnesenskii) is also very common in California. Yellow-faced Bumble Bee Yellow-faced Bumble Bee Up to a third of all commercially-available Western Honey Bees are sent over to California during this process. It’s estimated this is the largest controlled pollination process in the country. This means many Western Honey Bee colonies have to be brought to California every year from other parts of the country. ![]() The problem is that almond pollination happens in February when the Western Honey bee hasn’t yet fully established its colonies. The species is known to pollinate almonds in California. It plays an important ecological and financial role here. The Western Honey Bee ( Apis mellifera) is the most common bee species in California.
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