mothguide.com Glena cribrataria
All four wings are solid light gray without any hint of purple as in
. Lines are present only as a series of dots where at vein crossings, but the dots are generally nice and dark.
Note the double row of spots on the abdomen. This is also found on
Sometimes, there is faint shading along lines, particularly on the HW. Occasionally the dots can be fairly faint, especially in weathered specimens.
Reilly pers obs
Adults fly april-august in the north, from march in the south (Rindge 1965).
Generalist: poplar, willow, spruce, birch, blueberry, cherry, maple, oak, serviceberry, and probably other plants (Rindge 1965, Wagner 2005).
Rindge FH. 1965. A revision of the nearctic species of the genus Glena (Lepidoptera, Geometridae). Bulletin of the American Museum of Natural History 129 (3): 267-306.
McGuffin WC. 1977. Guide to the Geometridae of Canada (Lepidoptera) II. Subfamily Ennominae. 2. Memoirs of the Entomological Society of Canada 101: 1-125.
Covell CV. 1984. A field guide to the moths of Eastern North America. Houghton Mifflin Company: Boston. 496 pp.
Wagner, DL. 2005. Caterpillars of Eastern North America: A guide to identification and natural history. Princeton University Press: Princeton, NJ. 512 pp.