Insect Species Occurrence Data from Multiple Projects Worldwide with Focus on Bees and Wasps in North America

Latest version published by United States Geological Survey on Aug 8, 2023 United States Geological Survey
Publication date:
8 August 2023
CC0 1.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 535,505 records in English (26 MB) - Update frequency: unknown
Metadata as an EML file download in English (25 KB)
Metadata as an RTF file download in English (17 KB)


Species occurrence records for native and non-native bees, wasps and other insects collected using mainly pan, malaise, and vane trapping; and insect netting methods in Canada, Mexico, the non-contiguous United States, U.S. Territories (specifically U.S. Virgin Islands), U.S. Minor Outlying Islands and other global locations with the bulk of the specimens coming from the Eastern United States often from Federal lands such as USFWS, NPS, DOD, USFS. Some records also contain notes regarding plants or substrates from which insects were collected or that were present and/or in flower at the time the insects were collected. Unless otherwise noted, taxonomic determinations (identifications) were completed by Sam Droege (USGS Eastern Ecological Science Center- EESC, Native Bee Laboratory) and Clare Maffei (USFWS, Inventory and Monitoring Branch).

The EESC Native Bee Lab currently keeps only a small synoptic collection, rare and voucher specimens are deposited in the Smithsonian National Collection (NMNH) and widely distributed to other institutions for DNA, revisions, and augmentation of existing collections. Surplus specimens are also made available to students to learn their identifications. Corrections to any of our determinations are always welcomed. Common species that are not in demand for surplus are usually destroyed and the pins recycled. Recent revisions to Lasioglossum, Ceratina, and to a much lesser extent Triepeolus and Epeolus and other small groups have rendered determinations prior to those revisions out of date for species involved in name changes and users should account for that during analyses. Current data (included information on specimen codes without identifications) are always available without charge directly from Sam Droege.

Data Records

The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 0 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.


The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Droege S, Maffei C (2023). Insect Species Occurrence Data from Multiple Projects Worldwide with Focus on Bees and Wasps in North America. Version 1.10. United States Geological Survey. Occurrence dataset.


Researchers should respect the following rights statement:

The publisher and rights holder of this work is United States Geological Survey. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: f519367d-6b9d-411c-b319-99424741e7de.  United States Geological Survey publishes this resource, and is itself registered in GBIF as a data publisher endorsed by U.S. Geological Survey.


Metadata; bees; pollinators; insects; social bees; solitary bees; Specimen; Occurrence


Sam Droege
  • Metadata Provider
  • Originator
  • Point Of Contact
Wildlife Biologist
United States Geological Survey (USGS) Patuxent Wildlife Research Center (PWRC)
BARC - EAST, Building 308, Room 124, 10300 Baltimore Avenue
20705 Beltsville
+1 (301) 497-5840
Clare Maffei
  • Metadata Provider
  • Originator
  • Point Of Contact
U.S. Fish and Wildlife Service
Elizabeth Sellers

Geographic Coverage

Canada, Mexico, Non-contiguous United States, U.S. Territories (specifically U.S. Virgin Islands), U.S. Minor Outlying Islands, and other global locations.

Bounding Coordinates South West [-46.79, -163.481], North East [67.112, 121.415]

Taxonomic Coverage

Specimen-based occurrence records for native and non-native bees (Apidae), wasps, and other insects. Records for other non-target insect species commonly captured during bee collection are also recorded in this dataset including but not limited to butterflies and moths (Lepidoptera), ants (Formicidae), wasps (Apocrita), beetles (Coleoptera), spiders (Arachnida), grasshoppers (Acrididae), other true bugs (Hymenoptera), and flies (Diptera).

Family Apidae (bumble bees, euglossine, euglossines, honey bees, stingless bees), Andrenidae (andrenid bees, andrenids), Colletidate (colletid bees, plasterer bees, yellow-faced bees), Crabronidae (crabronid wasps, cicadakillers, sand wasps, mud daubers), Halictidae (halictid bees, sweat bees), Megachilidae (leafcutting bees), Melittidae (melittid bees, melittids), Sphecidae (mud daubers, sphecid wasps, digger wasps, sand wasps)

Temporal Coverage

Start Date / End Date 1990-06-04 / 2019-06-11

Project Data

No Description available

Title Bees of North America (United States, U.S. Territories and Minor Outlying Islands, Canada, and Mexico)
Funding Main funding is provided by United States Geological Survey (USGS), Eastern Ecological Science Center (EESC); with in-kind support from Smithsonian National Museum of Natural History; American Museum of Natural History (AMNH), Discover Life ( and other contributors.
Study Area Description Sampling for this dataset focuses on any location within the non-contiguous United States, U.S territories and Minor Outlying Islands, Canada, and Mexico, mainly in terrestrial locations. In some cases, protected areas such as national parks and wildlife refuges or specific vegetation types are targeted during collecting.

The personnel involved in the project:

Samuel (Sam) Droege
  • Principal Investigator

Sampling Methods

Collection methods include short-term (24 hours) and long-term (weeks, months, or continuous) operation of 12 oz or 3.25 oz pan, 64 oz vane, malaise, hand/insect net, or other traps arranged in transects or arrays of varying lengths. Some sampling methods target specific habitats, vegetation complexes, or plant or insect species. While other sampling methods aim to establish baseline data for bee species presence in protected areas such as national parks and wildlife refuges.

Study Extent This dataset is an aggregation of numerous projects and collection efforts conducted across the United States, U.S. territories and Minor Outlying Islands, Canada, Mexico, and other global locations by employees and field personnel of the USGS, and other federal and state agencies; protected area managers, biologists, private researchers, citizen scientists and volunteers.
Quality Control Bee species occurrence records are reviewed by project managers for accuracy and completeness. Unless otherwise noted, taxonomic determinations were completed by Sam Droege and other professional bee taxonomists where necessary (e.g. Dr. John Ascher, American Museum of Natural History; Dr. Jason Gibbs, Cornell University). If taxonomic determinations are completed by a Collector or someone other than Sam Droege, they are reviewed by Sam Droege or other professional bee taxonomists. These data are also subject to review by USGS SAS for accuracy and completeness following Darwin Core including but not limited to scientific name (syntax, spelling), and temporal and geographic information.

Method step description:

  1. Many of the methods used to collect these data are outlined or described in detail in The Very Handy Manual available online at

Collection Data

Collection Name USGS_DRO
Collection Identifier NA
Parent Collection Identifier NA
Specimen preservation methods Pinned

Bibliographic Citations

  1. Sellers, E. and D. McCarthy. 2015. Distribution and floral hosts of Anthophorula micheneri (Timberlake, 1947) and Hylaeus sparsus (Cresson, 1869), (Insecta: Hymenoptera: Apoidea: Anthophila), with new state records in Giles and Loudoun counties, Virginia, eastern USA. Check List 11(3):1665. doi:10.15560/11.3.1665
  2. Larson, D. L., Droege, S., Rabie, P. A., Larson, J. L., Devalez, J., Haar, M., McDermott-Kubeczko, M. 2014. Using a network modularity analysis to inform management of a rare endemic plant in the northern Great Plains, USA. Journal of Applied Ecology, 51: 1024–1032. doi: 10.1111/1365-2664.12273
  3. Russell, K. N., H. Ikerd, and S. Droege. 2005. The potential conservation value of unmowed powerline strips for native bees. Biological Conservation 124(1):133-148. doi:10.1016/j.biocon.2005.01.022
  4. Ascher, J. S., P. Ganibino, and S. Droege. 2006. Adventive Hylaeus (Spatulariella Popov) in the New World (Hymenoptera : Apoidea : Colletidae). Proceedings of the Entomological Society of Washington 108(1):237-239.
  5. Rykken, J., A. Rodman, S. Droege, and R. Grundel. 2014. Pollinators in peril? A multipark approach to evaluating bee communities in habitats vulnerable to effects from climate change. Park Science 31(1):84-90.;
  6. Colla, S. R., J. S. Ascher, M. Arduser, J. Cane, M. Deyrup, S. Droege, J. Gibbs, T. Griswold, H. G. Hall, C. Henne, J. Neff, R. P. Jean, M. G. Rightmyer, C. Sheffield, M. Veit, and A. Wolf. 2012. Documenting persistence of most eastern North American bee species (Hymenoptera: Apoidea: Anthophila) to 1990-2009. Journal of the Kansas Entomological Society 85(1):14-22. doi:10.2317/JKES110726.1
  7. Droege, S., M. G. Rightmyer, C. S. Sheffield, and S. G. Brady. 2010. New synonymies in the bee genus Nomada from North America (Hymenoptera: Apidae). Zootaxa No. 2661:1-32.
  8. Droege, S., V. J. Tepedino, G. Lebuhn, W. A. Link, R. L. Minckley, Q. Chen, and C. Conrad. 2010. Spatial patterns of bee captures in North American bowl trapping surveys. Insect Conservation and Diversity 3(1):15-23. doi:10.1111/j.1752-4598.2009.00074.x
  9. Droege, S., C. A. Davis, W. E. Steiner, Jr., and Mawdsley, J. 2009. The lost micro-deserts of the Patuxent River using landscape history, insect and plant specimens, and field work to detect and define a unique community. Proceedings of the Entomological Society of Washington 111(1):132-144. doi:10.4289/0013-8797-111.1.132

Additional Metadata

Purpose These specimen-based bee species occurrence records for insects trapped and collected in the non-contiguous United States, U.S. Territories and Minor Outlying Islands, Canada, and Mexico, represent baseline bee species occurrences. Absence of bee species from this dataset does not indicate absence of the species from the collecting location. Number of times a species is recorded in this dataset does not represent actual species abundance or common-ness but does offer an indication of fluctuations in population size.
Alternative Identifiers Bees of Maryland Project on