Scientific Name: Hemileuca sp.
Taxonomy Group: Arthropods
Last COSEWIC Assessment: November 2009
Last COSEWIC Designation: Endangered
SARA Status: Schedule 1, Endangered
Image of Bogbean Buckmoth
Buckmoths (Hemileuca) are a relatively well–studied and diverse genus of silk moths. Although the taxonomic rank of Bogbean Buckmoth in Canada is unclear, it is the only species of Hemileuca in Eastern Canada, it is a highly distinctive day–flying moth and is ecologically distinct from the buckmoth found in the prairies which has a different primary plant host and prefers drier habitats. Adult Bogbean Buckmoths are medium–sized moths with forewing lengths of 26–32 mm for males and 32–36 mm for females. They have a distinctive black and white colouration with an eyespot on each wing. (Updated 2017/06/02)
Distribution and Population
Bogbean Buckmoth populations are known only from Ontario and New York. All four Canadian sites are in eastern Ontario: two near Richmond south of Ottawa and two other sites approximately 50 km farther west near White Lake. Each pair of sites is considered to represent a different location with different potential threats. The actual area occupied by this species in Canada is less than 3 km². (Updated 2017/06/02)
In Canada, Bogbean Buckmoth is found in open, calcareous, graminoid and low shrub fens. Larvae are most abundant in patches of Twig Rush or Wire Sedge with shallow pools with Bogbean, its primary host. Adjacent Sphagnum hummocks with shrubs and stunted tamarack or cedar provide suitable pupation sites. (Updated 2017/06/02)
The Bogbean Buckmoth is a dayflying silk moth with one generation per year. Adult Bogbean Buckmoths emerge in late September and typically oviposit on Sweet Gale, Bog Birch, and other shrubs. Up to several hundred eggs are laid in a spiral ring on the stem. Eggs hatch in late May to early June and first instars communally feed primarily on Bog Cranberry for about 12 days before switching to Bogbean. Later instar larvae also eat Bog Birch, willows, and other shrubs, perhaps switching to the alternate hosts when the Bogbean is exhausted. In Ontario, adult Bogbean Buckmoths typically emerge in the third week of September. Females emerge from the pupa with fully developed eggs, attract males by emitting a pheromone, mate only once, and oviposit all eggs the same day. Adults do not feed. The Bogbean Buckmoths might be capable of flying up to several kilometres but are not strong fliers and seldom leave fen habitats. Isolation of populations is increased by the short–lived adult stage. (Updated 2017/06/02)
All Canadian Bogbean Buckmoth populations may be substantially threatened by a combination of habitat changes, water level fluctuations, land development, and possibly pest control programs. Habitat degradation due to invasive alien plant species is likely the most significant and imminent threat. In particular, European Common Reed and Narrow–leaved Cattail have invaded Canadian sites and may crowd out host plants and change the open aspect of the fens. Water level control at the White Lake location could substantially impact the habitat. (Updated 2017/06/02)
Federal ProtectionThe Bogbean Buckmoth is protected under the federal Species at Risk Act (SARA). More information about SARA, including how it protects individual species, is available in the Species at Risk Act: A Guide.
Provincial and Territorial Protection
Status of Recovery Planning
Recovery Strategies :
Name Recovery Strategy for the Bogbean Buckmoth (Hemileuca sp.) in Canada
Status Final posting on SAR registry
PLEASE NOTE: Not all COSEWIC reports are currently available on the SARA Public Registry. Most of the reports not yet available are status reports for species assessed by COSEWIC prior to May 2002. Other COSEWIC reports not yet available may include those species assessed as Extinct, Data Deficient or Not at Risk. In the meantime, they are available on request from the COSEWIC Secretariat.
9 record(s) found.
- COSEWIC Status Reports (1 record(s) found.)
- COSEWIC Assessments (1 record(s) found.)
- Response Statements (1 record(s) found.)
- Recovery Strategies (1 record(s) found.)
- Orders (2 record(s) found.)
- COSEWIC Annual Reports (1 record(s) found.)
- Consultation Documents (1 record(s) found.)
- Recovery Document Posting Plans (1 record(s) found.)
COSEWIC Status Reports
COSEWIC Annual Reports
COSEWIC Annual Report - 2010 (2010)Under Canada’s Species At Risk Act (SARA), the foremost function of COSEWIC is to “assess the status of each wildlife species considered by COSEWIC to be at risk and, as part of the assessment, identify existing and potential threats to the species”. During the past year, COSEWIC held two Wildlife Species Assessment Meetings and reviewed the status of 79 wildlife species (species, subspecies, populations). During the meeting of November 2009, COSEWIC assessed or reviewed the classification of the status of 28 wildlife species. COSEWIC assessed or reviewed the classification of an additional 51 wildlife species (species, subspecies and populations) during their April 2010 meeting. For species already found on Schedule 1 of SARA, the classification of 32 species was reviewed by COSEWIC and the status of the wildlife species was confirmed to be in the same category (extirpated - no longer found in the wild in Canada but occurring elsewhere, endangered, threatened or of special concern). The wildlife species assessment results for the 2009-2010 reporting period include the following: Extirpated: 6 Endangered: 39 Threatened: 16 Special Concern: 17 Data Deficient: 1 This report transmits to the Minister the status of 46 species newly classified as extirpated, endangered, threatened or of special concern, fulfilling COSEWIC’s obligations under SARA Section 24 and 25. A full detailed summary of the assessment for each species and the reason for the designation can be found in Appendix I of the attached report. Since its inception, COSEWIC has assessed 602 wildlife species in various risk categories, including 262 Endangered, 151 Threatened, 166 Special Concern and 23 Extirpated. In addition, 13 wildlife species have been assessed as Extinct. Also, to date, 46 wildlife species have been identified by COSEWIC as Data Deficient and 166 wildlife species were assessed as Not at Risk. This year has been a particularly productive year for COSEWIC’s Aboriginal Traditional Knowledge (ATK) Subcommittee. In April 2010 COSEWIC approved the Aboriginal Traditional Knowledge Process and Protocol Guidelines, providing clear and agreed principles for the gathering of Aboriginal Traditional Knowledge to carry out COSEWIC functions as required under Section 15(2) of SARA (See Appendix III of the attached report). We are grateful for the rich and enthusiastic contribution made by community elders and experts in helping the ATK Subcommittee prepare the ATK protocols.
Recovery Document Posting Plans
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