Order: Hymenoptera LINNAEUS, 1758 (bees, ants and wasps, Hautflügler)
Suborder: Symphyta GERSTÄCKER, 1867 (sawflies, Pflanzenwespen)
Superfamily: Megalodontoidea
Family: Pamphiliidae CAMERON, 1890 (web-spinning sawflies, Gespinstblattwespen, more info: de.wikipedia.org/wiki/Gespinstblattwespen)

Subfamily: Cephalciinae
Tribus: Cephalciini
Genus: Acantholyda COSTA, 1894
Acantholyda posticalis MATSUMURA, 1912
Acantholyda posticalis pinivora ENSLIN, 1918 (Pine-feeding Webspinning Sawfly, Große oder Gemeine Kiefern-Gespinstblattwespe)

The nominate form is distributed in E-Asia; please see: sciencelinks.jp/j-east/article/200101/000020010100A095228...

host plant: Pinus sylvestris (Scots pine, Wald-Kiefer)

Germany, Brandenburg, vic. Königs-Wusterhausen: Dubrow (mixed forest with old oaks), 01.05.2013; IMG_3302