Acantholyda hieroglyphica (Christ, 1791)
web-spinning pine-sawfly
on Pinus
Pinus halepensis, Hungary, Budapest, Arboretum, 6.viii.2015 © László Érsek
feeding damage
the larva is well concealed
silken tube with frass grains
laeve and silken tube
larva
had and thorax, dorsal
head, frontal
Pinus spec., Belgium, prov. prov. Namur, Doische, Matagne-la-Grande, 26.v.2018 © Stéphane Claerebout
parasite
Larvae solitary or in small group in a silken tube among the needled; the spinnings are filled with masses of frass. Pupation, without a cocoon, in the soil. Oviposition as one egg per needle. Preference for 3-4 years old trees.
host plants
Pinaceae, monophagous
Pinus cembra, contorta, mugo, pinaster, pinea, sylvestris.
phenology
Mostly univoltine, sometimes bivoltine.
distribution within Europe
references
van Achterberg & van Aarten (1986a), Hoop (1983a), Magis (1988a), Midtgaard (1986a), Pschorn-Walcher & Altenhofer (2000a), Pschorn-Walcher & Taeger (1995), Savina & Chevin (2012a), Stritt (1952a), Taeger, Altenhofer, Blank, ao (1998a, Toimil & Acosta (1995a).