Moths of North Dakota

Noctuoidea Notodontidae: Nystaleinae

Symmerista leucitys Franclemont 1946

Common name: Orange-humped mapleworm

Hodges #: 7953

Identification: Rfw 18.7 mm, with a pale streak from discal cell to apex; streak with white tooth, just distad of reniform, wider than high; s.t. line appears as a series of 'swept back' crescents in each cell.. Scape of antennae with long scale tuft, palpi prorect, longer than height of eye.  Male with emargination of eighth sternite deeper than wide.  

Similar species: 7951, 7952, 7983, 8005.

Distribution: southern Canada and northern half of United States east of the Great Plains.

Hosts: Larval feed on Maples- Acer.

Note: Prior to 1946, S. canicosta, S. leucitys and S. albifrons were thought to be a single species then known as Symmerista alibfrons.  See the Key to Notodontidae of the Dakotas for separation of these three species.  The true S. albifrons does not occur in the Dakotas.


MN.  Clay Co., Moorhead Science
Center. UV/ Hg lt. 19-VI- 1996.
G. Fauske, C. Lochen, L. DeCock.


Larva, pic courtesy of James B. Hanson, USDA Forest Service, Forestry Images,





Forewings of S. canicosta (left) and S. leucitys (right): comparison of markings.






Last updated: 04/14/09

Good web citizens cite their sources. 

This resource is to be cited as: Fauske, G. M.  [date of cited page]. cited page
 in Moths of North Dakota: an online identification guide. 
< >

Dr. Gerald M. Fauske
collection manager, NDSIRC
research specialist, NDSU
216 Hultz Hall
Fargo, ND 58105

Published by the Department of Entomology 

Prospective students may schedule a visit by calling 1-800-488-NDSU.