Family common name: web-spinning and leaf-rolling sawflies
Subfamilies: Cephalciinae, Pamphiliinae
The family Pamphiliidae are known for larval behaviors like eating gregariously in large webs or rolling up leaves. They have a fairly broad host range and are relatively species-rich in the North American Symphyta. Pamphiliidae are recognized by the large head and thin seta-like antennae (Smith and Middlekauff 1987). Many have bright colors or distinctive markings (Taeger et al. 2010).
Pamphiliidae sawflies oviposit on leaves or needles of the host plant. Larvae feed externally on foliage, but generally have either the habit of creating intricate nests of silk, frass, and leaf matter, or feeding inside a rolled-up leaf. Some economic pests are included in this family (Smith and Middlekauff 1987).
World: This family’s range extends through North America, Europe, Asia, and South America (Taeger et al. 2010, GBIF).
North America: Pamphiliidae occurs throughout the United States and Canada, south into Mexico (Smith and Middlekauff 1987).