Dichotomous table for gallers on Ferulago
by Hans Roskam
1a On part of umbel or fruits => 4
1b On vegetative parts => 2
2a Galls caused by animals => 3
2b Oblong bulges on leaf veins, -stalks and stems, bearing aecia. F. campestris, communis, sadleriana: Puccinia ferulae
= Also known from Mediterranean, SE-Eu, Ferulago hosts is the rust Uromyces ferulae, with cecidogenic aecia.
3a Yellowish, wrinkled thickenings on midrib and tips of leaflets. F. campestris: cf. Ditylenchus dipsaci
3b lmost nest-like deflected larger parts of leaves, associated with curling of inserted leaflets on stunted midrib. F. campestris: Philaenus spumarius
4a Centre of stalk of (partial) umbel with one- or several-chambered tough-walled, ± club-shaped swellings. Each chamber containing a single larva. F. campestris, setifoliae: Lasioptera carophila
4b Fruits inflated, bladder-like globular, distinctly protruding above the umbel, containing a red larva. F. campestris: Kiefferia pericarpiicola