FOOD PLANTS. 25 



Potentilla argentina, by Diastrophus Mayri, Reinh. 



— reptans, by Xenophanes potentillse, Devil. 



— — — foveicollis, Thorns. 



— tormentilla, by — brevitarsis. 

 Acer pseudo-platanus, by Pediaspis acerina, Bremi. 

 Lapsana communis, by Limaspis lapsanse, Karsch. 

 Phoenixopus (Lactuca) vimineus, by Limaspis phoenixo- 



podus, Mayr. 

 Gentaurea scabiosa, by Plianacis centaurese, Foerster ; 



Aulax scabiosse, Grir. ; 

 and A. Bogenhoferi, 

 Wachtl. 



— salamatina, by Aulax Lichtensteini, Mayr. 



— jacea, paniculata, and scabiosa, by Aulax 



jacese, Schenck. 

 Hieracium boreale, &c, by Aulax hieracii. 

 Tragopogon major and orientalis, by Aulax tragopo- 



ginis, Thorns. 

 Hypochseris radicata, by Aulax hypochseridis, Kieffer. 

 Artemisia, by Aulax artemisise. 

 Serratula heterophylla, by Aulax serratulse, Mayr. 

 Salvia officinalis, by — salvise, Gir. 



Scorzonera humilis, by — scorzonerse, Grir. 



Glechoma hederacea, by — glecliomse, Htg. 

 Nepeta pannonice, by — Kerneri, Wachtl. 



Papaver rhoeas, by — minor, Htg. ; and 



papaveris, Perris. 

 Lin aria vulgaris, by — hieracii. 



Valerianella olitoria, by — valerianellse, Thorns. 

 Gytisus capitatus, by — hieracii. 



Fagus, by Biorhiza aptera. 



Pinus, by — — 



Vitis, by — — ■ 



Pteris aguilina, by Diastrophus rubi. 



Triticum repens, by Aulax hieracii. 



Obs. The root form of Pediaspis sorbi is stated by its discoverer, Tisch- 

 bein, to form galls on the roots of Sorbus aucuparia ; but Mayr (Eur. 

 Cyn., p. 2) does not mention Sorbus as a food plant, giving Acer pseudo- 

 platanus as tbe host for both forms. 



