Tenthredinidae 889 



POLYSELANDRIA MacGillivray 



P. flavipes (Nort). Saranac Inn, Jl (NYS) ; Axton, Jl (CU); Oswego, Jl 

 (CU); Ithaca, Jl (CU) ;_ Karner, Jl, N. Chatham, Je (NYS); LI (US). 

 Larva feeds on Pteris aquilina. 



Hemitaxonus Ashmead 



H. albidopictus (Nort.) (innominatus MacG.). Saranac Inn, Ndtn, type of 

 innominatus; Syracuse, Aug (MacG-Ill) ; Boston, Aug, MCV (US); Ithaca, 

 Sep (MacG-CU); LI: Wyandanch, May (MacG-Schott). 



H. amicus (Nort.). Rouses Pt., Je 13, 1895 (Dyar-US). Larva feeds on Onoclea 

 sensihilis. 



H. dubitatus (Nort.). Ellenville, Jl (CU) ; Ithaca, May (US,CU) ; McLean, 

 May (CU); W. Nyack, Jl (US); Van Cort. Pk., Jl (US); LI: (US); 

 Maspeth, Je, Ols (MacG-Schott). Larva feeds on Onoclea. 



Strongylogaster Dahlbom 



S. annulosus Nort. Saranac Inn, Ndm (MacG) ; Axton, Je (US, CU) ; Wood- 

 worth, Je (NYS); Ilion, May (NYS); Albany, Je (NYS); LI: Wyan- 

 danch, May (MacG-Schott). Larva feeds on Pteris aquilina. 



S. longulus Nort. McLean, Je 5 (Bdy-CU) ; Albany, May (NYS); LI: Wyan- 

 danch, May (MacG-Schott). 



S. luctuosus Prov. Keene Val., Dyar (MacG). 



S. politus Cress. Otto (CU) ; McLean, Je 5 (Bd3^-CU). Larva feeds on Pteris 

 aquilina. 



S. soriculatipes Cress. Cranberry L., Je 19, 1924, Htly (Roh). 



S. tacitus (Say). Castile, EABradlev (Bdy) ; McLean, Ap 30 (Bdy-CU) ; Karner, 

 May, Albany, Je (NYS); Lif (US); Yaphank, Jl, Ols (MacG-Schott). 



S. unicus Nort. LI: Brooklyn, JAkhiirst (Nort). 



Thrinax Konow 

 T. puUatus MacG. Ithaca, type. Larva feeds on fern. 



SUBFAMILY CLADIINAE 

 Trichiocampus Hartig 



T. gregarius (Dyar). Keene, Jl 1, 1894, Dyar (US). Larva feeds gregariously on 

 Populus tremuloides and P. deltoides. 



T. pacatus MacG. Ithaca, type. 



T. viminalis (Fall.). Poplar Sawfly. Greenfield Center, Chester, Aug, New 

 Milford, Aug (Felt) ; Binghamton, Sep (Felt) ; Albany and vie. (NYS,CU, 

 US, MacG-Ill); Cambridge, Felt (NYS); NYC, May, Dyar (US); LI: 

 Brooklyn (US). This European species was first recorded from US by 

 Lintner, who reared it from larvae feeding on leaves of Populus monilifera 

 collected at Albany, and described it as Aulacomerus lutescens. It has since 

 been observed in a number of localities in the northeastern part of the US and 

 is sometimes recorded as injurious to Carolina poplar. Lintner observed that 

 adults of the first brood emerge in July and the second brood appears in August. 



