Arma custos (Fabricius, 1794)
on Alnus, etc.
parasite
Larvae and adults are predators of, among other species, Agelastica alni.
host plants
polyphagous
Alnus; Betula; Robinia pseudoacacia.
distribution within Europe
PESI (2021).
references
Aukema, Heijerman & Kalkman (2016a), Baugnée, Dethier, Constant, ao (2000a), Bury, Mazepa, Obszarny, ao (2021a).