Tech. Series 27, Part II, Bureau of Entomology, U. S. Dept. of Agriculture. 



Plate XLI. 



ALEUROTHRIXUS HOWARD! AND ALEUROTRACHELUS TRACHEIFER. 



Ahiiiolliriiii.f hiiirtirdi: Kit;. 1. -I'lipa case, il<>rsal view. Fit;. 2.— Larva, first iiistar. Fit;. 3.— 

 Swonl-shappd spine of first-iiislar larva. Fij;. 4.— F.^'C. Fip. .5.— Mari;in of pupa case. Fitr.fi.— 

 Vasiforin orilke. Ah un>lriicli(lus Irncluifrr: Fit;. 7.— I'upa case, dorsal view. Fig. S.— \ asiform 

 orifice. Fit;. '.». -Mart;in of i)upa case. cOri};inal.) 



