Alypia octomaculata, the eight-spotted forester, is a moth of the family Noctuidae first described by Johan Christian Fabricius in 1775. It is native to Canada, but can be found today throughout Northern America, ranging between Nova Scotia to Florida and South Dakota to Texas. Their habitats being rather specific, they make home where wooded areas meet open fields.
|Eight Spotted Forester|
|Adult Alypia octomaculata|
Full grown larvae reach up to 25.4–38 millimetres (1–1+1⁄2 in). The moth is overall black with two spots on each wing (total of eight spots), it's forewing ranges between shades of white, cream, or yellow.  Their wingspan is around 30–37 millimetres (1.2–1.5 in). These moths are active during the day and night, often being mistaken as a butterfly.
The larvae feed on the underside of leaves and stems of grapevines, peppervines and Virginia creepers. A. octomaculata larvae are considered somewhat of a pest in commercial and decorative vineyards.
When threatened, their first line of defense is to vomit a foul orange tinted liquid. It escapes by falling off of its perch, still attached to it by the silk thread excreted from its mouth.
Larvae who are still around during the fall like to spin their soft-walled cocoon into partial decayed material such as wood, soil, and even trash. Some mature caterpillars even die when they aren't given an opportunity to bore themselves into something pulpy and suitable.
Like many other moths, A. octomaculata have the ability to remain in something called a diapause, a dormant state in which their development is delayed, up to as far as 4 years long on record. The conditions of when they decide to hatch is unknown.
A. octomaculata are univoltine more north, flying late spring from April to June to produce one generation. In warmer climates there may be two annual broods and even attempts at three. The matured adults feed on nectar from flowers of herbaceous plants. When their initial brood peaks, during March, the adults fly to flowers such as that of Sweetleaf.
A. octomaculata being parasitized
- Heppner, J.B (2003). "Arthropods of Florida and Neighboring Land Areas" (PDF). Lepidoptera of Florida. Florida Department of Agriculture and Consumer Services, Division of Plant Industry, 2007. 17.
- Lowry, Quincy S. (1917-02-01). "An Outbreak of The Eight-Spotted Forester, Alypia Octomaculata Fabr., In New Haven, Conn". Journal of Economic Entomology. 10 (1): 47–48. doi:10.1093/jee/10.1.47. ISSN 1938-291X.
- Borror, Donald J. & White, Richard E., Insects - A Peterson Field Guide, Houghton Mifflin Company, Boston, New York, 1970, plate #12
- Brou Jr., Vernon; Lafontaine, Donald (2009-05-12). "A new species of Lithophane Hbn. (Lepidoptera, Noctuidae, Xyleninae)". ZooKeys (9): 11–20. doi:10.3897/zookeys.9.158. ISSN 1313-2970.
- "Eight-spotted Forester Moth (Family Noctuidae)". Field Station. 2013-03-12.
- Lafontaine, Donald; Schmidt, Christian (2010-03-19). "Annotated check list of the Noctuoidea (Insecta, Lepidoptera) of North America north of Mexico". ZooKeys (40): 64. doi:10.3897/zookeys.40.414. ISSN 1313-2970.