Tracy Zarrillo

Department of Entomology

The Connecticut Agricultural Experiment Station
123 Huntington Street
New Haven, CT 06511
Voice: (203) 974-8473 Fax: (203) 974-8502


Tracy has expertise in native bee taxonomy, native bee monitoring and survey techniques, and pollinator conservation.  She can do species-level identifications for the apoid fauna in the northeastern U.S., specializing in the genera Bombus, Andrena, Ceratina, and Lasioglossum.



B.S., Biology, Southern Connecticut State University, 1992

M.S., Biology, Southern Connecticut State University, 2016


Training received in wild bee identification and pollinator conservation:

  • Native Bee Identification, Ecology, Research and Monitoring Course:  July 5-10, 2010, FWS National Conservation Training Center, West Virginia.

  • Pollinator Conservation Planning Short Course:  July 6, 2011, University Of Rhode Island, Kingston, Xerces Society.

  • Dialictus Identification Course:  March 23-25, 2012, University of Massachusetts, Amherst.
Teaching Workshops:
  • Pollinator Conservation Planning Short Course, Xerces Society:  April 12, 2012, Tolland County Agricultural Center, Vernon, Connecticut.
  • Northeastern Bee Identification Workshop, March 22-24, 2013, University of Massachusetts, Amherst, Massachusetts.

  • Bumble Bee Identification Workshop, March 21, 2014, The Connecticut Entomological Society, University of Connecticut, Connecticut.



Tracy provides assistance in the field and laboratory for research projects dealing with bee pollination, pesticides, and native bee diversity in Connecticut.  She initiated and coordinates the Connecticut Native Bee Monitoring Program.  She also assists in natural history surveys and the detection of exotic and invasive insects throughout Connecticut.


Station Career:

Agricultural Research Assistant II, 1992-1994

Agricultural Research Assistant III, 1994-1998

Agricultural Research Technician I, 1998-2014

Agricultural Research Technician II, 2014-present



Zarrillo, T. A. and K. A. Stoner. 2019. The bee fauna of an Atlantic coastal plain tidal marsh community in Southern New England, USA. J. Melittology 86: 1-34.

Zarrillo. T., J. S. Ascher, J. Gibbs, and K. Stoner.  2016.  New and Noteworthy Records of Bees (Hymenoptera: Apoidea: Anthophila) for Connecticut.  Journal of the Kansas Entomological Society  89(2):  138-157.

Zarrillo, T. 2016.  A Survey of the bees (Hymenoptera: Apoidea) of Grass Island Preserve, Connecticut.  M. S. Thesis. Southern Connecticut State University; New Haven, Connecticut; 127 pp. 

Zarrillo, T. 2014. Connecticut Bumble Bee Guide.

Droege, S. 2015. (T. Zarrillo, Editor) The Very Handy Manual: How to Catch and Identify Bees and Manage a Collection. USGS Native Bee and Inventory Monitoring Lab.