ambrosiaecola 



bicolor 



cavicola 



(?) futilis 



harringtoni 



laciniatus 



leavenworthii 



mulgedicola 



nabali 



pirata 

 pisum 



podagras 



rufipes 



rufus 



silphii 



semipicea 

 sonchicola 



American Insect Galls: Thompson 



AULAX 

 Ash. '97, p. 134 



43 



sylvestris 



d^ 9 Ambrosia species, Mo. (?) 



Aulacidea. 



9 



Aulacidea. 

 9 (Mo., Apr. 30). (Clall unknown.) 



Aulacidea. 

 cT = Periclistus. 



9 (Canada). (Gall unknown.) 

 cf 9 Silphium laciniatum, 111. Summer. 



Gall on receptacle, 

 cf 9 Lactuca species, Va. Winters. Spring. 

 Stem swollen. 



cf 9) 



Aulacidea bicolor Gill. 

 cf 9 Nabalus, Toronto, Mass. Winters. 

 Early June. Cells under bark at 

 crown. 

 Aulacidea. 

 cf 9 = (Periclistus). (Prenanthesaltissima, P. 



serpentaria.) 

 cf 9 Lygodesmia juncea. Neb., Colo. 

 Winters. Mid-May. Pea size on 

 stems, 

 cf 9 Lactuca canadensis, Mass., R. I., 

 Conn. Winters. May. Stem swell- 

 ing. 



Aulacidea. 

 9 (Mexico). (Gall unknown.) 

 Gill. '91, p. 195 (Antistro- cf 9 Silphium, various species, 111. Cells 



phus) only; no gall. 



Gill. '91, p. 192 (Antistro- cf 9 Silphium, 111. Winters. Late May. 

 phus) Swollen stalks at tip. 



A. leavenworthi Bass. 

 Harr. '41, p. 400 9 = Periclistus. 



Ash. '97, p. 134 cf 9 Sonchus oleraceus, Canada, X. C. 



June. Swelling at top of stalks. 

 Aulacidea podagra Bass. 

 0. S. '63, p. 37-38 (F. Can., cf 9 = Periclistus. 

 vol 2, p. 551) 



Gill. '91, p. 200-202 



Ash. '97, p. 134 



0. S. '61, p. 64 

 Ash. '87, p. 146 

 Gill. '91, p. 194 



Bass. '00, p. 310 



(Ash. '97, p. 133 



Brodie '92, p. 12 



O. S. '63, p. 42-43 

 Walsh '70, p. 73 



Bass. '90, p. 92 

 Cameron '84, p. 485 



AULACIDEA (Ash. '97c, p. 68) 



mulgedicola 



solidaginis 



tumida 



Ash. '97, p. 133 (Aulax) cf 9 



Girault '03, p. 323 cf 9 



Bass. '90, i>. 92 cf 9 



Mulgedium acuminatum, D. C. Late 



Jan. Stem swollen within. 



Aulacidea bicolor Gill. 

 Solidago species, Va. Winters. 



Early June. Stem swollen. 



.Vulacidoa podagi-se Bass. 

 Lactuca canadensis, Mass., Conn. 



N. Y. \\'inters. May. Stem 



swelling. 



A. podajirx Bivss. 



