Entomology Collection TitleImage Bugs Pinned
Species Page - Mesothea incertata
species list search results ->Mesothea incertata ->species page

E-mail this Page   
Print this Page   
Link to this Page   

scientific name    Mesothea incertata    

common name     Plain Emerald, Day Emerald

habitat
Dry open mixedwood and pine forest, peat bogs and grasslands.

seasonality
In Alberta adults fly in May and June, peaking mid May through early June.

identification
A small dusky green geometrid with a faint (sometimes absent) transverse PM line. Flight-worn individuals can fade to a dusky tan, quite unlike the dusky olive of freshly emerged moths. The small size, uniform green abdomen and absence of a PM line will separate this species from other emeralds (Nemoria, Synchlora and Cheteoscelis). Ferguson (1985) recognized two subspecies, both of which occur in Alberta. The nominate subspecies is slightly smaller with more distinct transverse lines, and occurs across the boreal region to the foothills. Subspecies viridipennata (Hulst) occurs from the Rocky Mountains west.

life history
The caterpillar is green with a brown dorsal stripe. The body is slender and without noticeable bumps or protrusions, and the head and first thoracic segment each bear a pair of pointed horns (Wagner et al. 2001). The pupa overwinters. The adults are strictly diurnal. In the boreal forest, adults fly in open peat bogs, but this species is also found in dry montane and eroding river valley habitats associated with patches of bearberry (Arctostaphylos uva-ursi).

conservation
No concerns.

diet info
Known larval hosts include a variety of shrubs in the Betulaceae, Salicaceae, Ericaceae and Rosaceae (Wagner et al. 2001). Associated with Labrador Tea (Ledum groenlandicum) and bearberry (Arctostaphylos uva-ursi) in Alberta.

range
A northern species, found from Alaska and NWT south to New England, south in the mountains to CA, NV and CO (Ferguson 1985). In Alberta it occurs throughout the boreal and foothills regions, and locally in the aspen parkland south to the Rumsey area.

quick link
http://entomology.museums.ualberta.ca/searching_species_details.php?s=3789



Comments (0)Add New Comment

Comments are published according to our submission guidelines. The EH Strickland Entomological Museum does not necessarily endorse the views expressed.

Add New Comment (all fields are required)
Validation:

CLICK TO ENLARGE

Related Species Info
Authorship
Display Hierarchy
References (3)
Specimen Info
There are 64 specimens of this species in the online database
Map Distribution
Adult Seasonal Distributioncreate a collection histogram with specimens
Specimen List (64)
Related Links
Moth Photographers Group

 

Logo Department of Museums and Collections ServicesLogo University of Alberta