April 2009 UPDATE
Pryeria was reported and confirmed from the city of Bowie in Prince George's County, MD in January.
An entomologist had collected adults in 2006 and had them in the freezer awaiting identification. This is a
new county record and a recent survey of the area revealed young larvae lightly sprinkled around town.
May 2008 UPDATE
Pryeria was found south of Annapolis in Anne Arundel County in 2008. Please view the map below which
has been updated to show the new detection, and expanded area of expected distribution.
May 19, 2005 UPDATE
The larvae are now finishing up their ravenous feeding frenzy and are looking for a sheltered place to pupate
(the flattened brown cocoon in the picture on the right, below) where they will remain until latter this fall. Our field
surveys and homeowner reports have verified that it is still contained in the Glen Burnie, Harundale, Severna Park
area of Anne Arundel County. Please contact us if you detect this pest outside of this area. The map below shows the 2004 survey activity.
October 20, 2004 UPDATE
May 30, 2003
New Moth Found in Maryland on Ornamentals
Pryeria moths are expected to emerge in November. MDA is attempting to delimit the
populations of this emerging pest. Marylanders are asked to
contact Dick Bean at MDA (410) 841-2743 if you see pupae now, or moths in late October/November.
Moth larvae brought in to the Plant Protection & Weed Management (PP&WM) Section
insect diagnostic laboratory by a concerned homeowner have been identified as
In April and May of both 2001 and 2002, a homeowner in the City of Fairfax,
Fairfax County, Virginia, noticed a large infestation of larvae on her ornamental Euonymus
(Celastraceae); the larvae were causing significant defoliation of the plants. In May 2002,
several larval specimens were sent to the Insect Identification Lab, Department of
Entomology, Virginia Tech University, Blacksburg, Virginia for identification. The
entomologist there (Eric Day) reared the larvae to adults, which emerged in November.
Additional adults were collected at the Fairfax site in December 2002 and submitted to the
Insect Identification Lab. Eric forwarded the adults to John Brown at the USDA Systematic Entomological
Laboratory (SEL) in March 2003. Based on the available literature, comparison with
specimens in the collection of the National Museum of Natural History, and consultation
with Dr. Marc Epstein, the specimens were identified as Pryeria sinica Moore
(Lepidoptera: Zygaenidae), which previously is unreported from the United States.
A detailed report of the discovery was sent out by Eric Day in early May. This report was
distributed to the PP&WM staff, including Gaye Williams of the section's Entomology
Laboratory. When Shawn Johnson of Glen Burnie walked in with a jar of caterpillars
May 28, 2003 that had been defoliating the euonymus in his yard, Gaye instantly came up
with the match. Final confirmation has been provided by SEL.
A quick site visit May 29, 2003 found the pest to be abundant on Euonymus planted
throughout the development. A delimiting survey will be performed to determine the
extent of the population.