Moths of North Dakota

Noctuoidea Notodontidae: Heterocampinae

Lochmaeus bilineata (Packard 1864)

Common name: Double-lined prominent

Hodges #: 7999

Identification: Rfw 19.0 mm, transverse lines double, p.m. line with white filling especially strong in cells CuA2 and in the fold.  Reniform spot a black bar or obscure.  Eighth sternite of male with two large pits connected by a shallow depression, pits visible without removing scales.  Members of the genus Lochmaeus can be separated from Heterocampa by having the terminal line reduced to a terminal spot in each wing cell, between veins rather than accenting veins.  Members of the genera Heterocampa and Lochmaeus can be separated from Schizure by the constricted Rs cell on the hw.   

Similar species: 7920, 7928, 7930, 7983,7994, 7995, 79988005, 9382.

Distribution: southern Canada and United States east of the Rockies.

Hosts: Larval feed on Elms- Ulmus, and Basswood- Tilia.

Note: the line drawing of the male eighth sternite in Forbes (1948), p. 230, fig. 225, is inverted and from an oblique angle allowing for the erroneous interpretation of possessing a sternal groove similar to those of M. marthesia and H. obliqua.


MN.  Becker Co., Detroit Lakes. 
31- VII- 1961.  R. W. Poole



Forewing of L. bilineata showing white filling of double black post median line.

Larva, pic courtesy of Lacy Hyche, Auburn University, Forestry Images,




Eighth sternite of Lochmaeus bilineata with scales present and scales removed (left, right, respectively). Pits indicated by blue arrow.





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.