Dichotomous table for gallers on Calicotome
by Hans Roskam
1a Galls contain midge larva inside => 2
1b Swelling of stem bearing rimmed depressions which contain causer. C. spinosa: Planchonia arabidis
1c Swelling of stem containing beetle larva. C. spinosa: Protopirapion kraatzii
2a Oblong to egg-shaped bud gall, green, succulent, covered with silk hairs. C. infesta subsp. intermedia, spinosa, villosa: Asphondylia calycotomae
2b Pods disfigured and shortened, up to 20 mm long, with a single spherical thick-walled swelling enclosing a large larval chamber. C. infesta subsp. intermedia, spinosa, villosa: Asphondylia calycotomae