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A Guide to Identifying Nebraska Bumble Bee Species

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A Guide to Identifying Nebraska Bumble Bee Species University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Historical Materials from University of Nebraska-Lincoln Extension Extension 2000 EC 00-1564-S Bumble Boosters: A Guide To Identifying Nebraska Bumble Bee Species Doug Golick University of Nebraska-Lincoln, [email protected] Marion D. Ellis University of Nebraska - Lincoln, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/extensionhist Part of the Agricultural Education Commons Golick, Doug and Ellis, Marion D., "EC 00-1564-S Bumble Boosters: A Guide To Identifying Nebraska Bumble Bee Species" (2000). Historical Materials from University of Nebraska-Lincoln Extension. 4931. https://digitalcommons.unl.edu/extensionhist/4931 This Article is brought to you for free and open access by the Extension at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Historical Materials from University of Nebraska-Lincoln Extension by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. University of Nebraska Cooperative Extension EC 00-1564-S A Guide To Identifying Nebraska Bumble Bee Species BUMBLE BOOSTERS By Doug Golick, Graduate Research Assistant Marion Ellis, Extension Entomologist University of Nebraska Department of Entomology All illustrations by Doug Golick This guide is part of a cooperative project of the: University of Nebraska Department of Entomology; Lincoln Public Schools Science Focus Program; and the Folsom Children's Zoo. It is partially funded by a grant from the Nebraska Lottery's Educational Innovation Fund. © Copyright by the University of Nebraska, 2000 3 BUMBLE BOOSTERS on the Web: http://bumbleboosters. unl. edu For more information on bumble bee biology, distribution , identification and links to related sites, visit the Bumble Boosters Web site. Links are also included to schools cooperating to conduct research on Nebraska bumble bees. Anyone interested in natural history can make original discoveries about bumble bees. The Bumble Boosters Web site provides ideas and guidance for investigating bumble bees and plants they visit. Table of Contents ===============- Why Bumble Bees Are Important .. ........... ....... ......... .... ... ............. ..... ... ... 6 Capturing Bumble Bees .. ............ ... ... ....... .... ... ........... ..... .. ...... ....... .. ...... .. 7 Making a Reference Collection ..... ..... .... .. .... ............ .. ................ ... ... ... ..... 8 The Bee Family Tree ..... ... .. .. .... ... ..... ...... ..... .................... ....... ...... .......... 10 The Bumble Bee Family Tree .. .... ... .... ..... ...... .. ........ ... ... .... ...... ... ..... ..... .. 11 Bumble Bee Mimics .............. ........ .. ..... .... ..... ..... ....... .. .. ...... ..... .. ..... ..... .. 12 How to Use the Identification Guide ...... ....... .. ....... ... ............ ........... ....... 14 Bee Identification Guide ...................... ..... ........ .... ....... .... ..... ..... ....... ...... 17 Checklist of Nebraska Species ....... ... ..... ..... ................ ...... ...... ..... ..... ... 17 External Morphology of Bumble Bees .. .. .......................... .. ....... ... .. ... ... .. 52 Glossary .................... ........ .. .. ..... ..... ..... ...... ... .. ............... ..... .... ... .... ... ..... 57 Additional Resources ..... ...... ..... ... ..... ........ .... ... .. ........ .. ...... .. .... ........ ... ... 60 About Bumble Boosters ........ ....... ....... ..... ...... ... .. .... .. .... ..... ..... .... ........ 61 Data Sheet for Collection Specimens ....... ......... ........ .. ..... ....... ....... ....... 62 5 Why Bumble Bees are Important For most people, pollen means wildlife, increase soil fertil ity, and allergies and bees mean stings. beautify our landscapes. However, you should thank a bee, In an era when human activities butterfly, bat, bird, or other pollinator have reduced nesting habitat and for one out of every three bites of food forage plants, we need to consider the you eat. Pollination is the transfer of impact we have on plant/pollinator pollen from one flower to another. It is relationships. Pollinators are a critical a critical step in fruit and seed produc­ link in the ecosystems of both wild and tion . Some plants produce generous agricultural lands and play an impor­ quantities of pollen and rely on the tant role in the interconnectedness of wind to transfer pollen. Many plant life in general. Bumble bees are a species, however, produce smaller great place to begin. They are beautiful amounts of pollen and have elaborate native insects whose distribution and mechanisms to attract pollinators. abundance can be nurtured by There are 95 crops grown in the providing suitable nesting habitat and United States that require insect forage plants. pollinators. In addition, many bee­ pollinated plants provide food for Capturing Bumble Bees Bumble bees of one species or handled carelessly. Males do not have another are active in Nebraska from a stinger. April to October, but they are most For observation, captured bumble abundant in summer. They can be bees should be chilled in a small easily collected from flowers, areas cooler with an ice block for 30 minutes. near their nests, or as they fly along at When chilled to the point that they are ground level in search of a suitable unable to fly, specimens can be nesting site. Bumble bees can be transferred to a magnifying box or captured in an insect net and then placed on a flat surface for observation transferred to small glass jars. They with a hand lens. They should not be also can be captured on flowers by taken far from the point of capture and placing a glass jar over them and should be released when you are quickly covering it with a lid. A captive finished observing them. Capture and bumble bee will always try to escape release is recommended in the early rather than use its stinger; however, spring when overwintered queens are females can and will sting if touched or establishing their nests. 7 Making a Reference Collection When making a reference collection, All specimens should be labeled with capture bumble bees in a kill jar the date, place of capture and the charged with ethyl acetate or in a net, collector's name. The data label and transfer them to a kill jar. Speci­ should be placed on the pin beneath mens should remain in kill jars for 30 the specimen. minutes. Jars must be protected from After two or three days, specimens sunlight to prevent condensation will dry and become brittle. They because excess moisture may cause should be handled carefully to avoid body hair to become wet or matted. breaking appendages. This can make the specimen difficult to Reference collections will remain in identify. Reference collections should good condition indefinitely if protected be made in late spring and summer from insects that damage stored when queens have established their products. This can be achieved by nests. Pin specimens by inserting an placing a few moth crystals in storage insect pin through the top of the thorax. boxes. Lateral view of pinned bumble bee Top view of pinned bumble bee specimen. specimen. 9 The Bee Family Tree There are approximately 20,000 clearly see the branched hair as species of bees worldwide. About shown in the illustration . 3,500 species occur in North America. All bees belong to the super family Most are solitary and nest in soil or Apoidea. They are classified into nine hollow plant stems. families based largely on tongue length Bees feed on pollen and nectar and and how they transport pollen. have branched body hairs for pollen collection. Most other insects lack body hairs or have a few unbranched hairs. Careful examination for the presence of branched hairs is usually sufficient to identify an insect as a bee. A dissecting microscope is needed to Branched hair of bee. The Bumble Bee Family Tree There are approximately 265 depends on the true bumble bees in species of bumble bees worldwide. whose nest they are reared. They are most abundant in temperate Bumble bees belong to the family zones of Europe, North America and Apidae. Bumble bees and honey bees Asia. They occur within the Arctic are the only members of this family Circle; however, they are virtually found in North America. The family is absent from the tropics. characterized by females having a There are two distinct types of pollen basket (corbicula) on their hind bumble bees. The truly industrious legs for transporting pollen. Members genus (Bombus) and the of the genus Psithyrus are an excep­ nonindustrious genus (Psithyrus) tion to the rule and do not have pollen which lacks a worker caste and baskets on their hind legs. 11 Bumble Bee Mimics When one animal resembles another The insects likely to be confused living in the same locality, it is called a with bumble bees are: 1) bees in the mimic. Mimicry is common in the insect genus Anthophora; 2) bee hawkmoths; world . Many bumble bees in a region and 3) several species of hairy flies. share a similar appearance. Their sting Female Anthophora, or digger bees, protects them from predators, who carry pollen along the entire length of learn to avoid them based on their color their hind legs rather than in a distinct patterns. This type of mimicry is called pellet in a pollen basket. Bee hawk­ "Mullerian" mimicry. Mullerian mimicry moths will have long siphoning is why careful observation is required to mouthparts coiled under their head. identify bumble bee species.
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