The Canadian Entomologist, Volúmenes17-19

abdomen abundant Acad American antennæ apex aphides apical band bark base beetles belongs blackish body bristles brood brown butterflies Cecidomyia cell chrysalis Coleoptera Colias collection color common costa coxæ cylindrical dark described dorsal dorsum eggs elytra Embia Embid Entom Entomological ENTOMOLOGIST female femora fore wings front genera genus green Grote Guen hairs head Hessian Fly hind wings imago inch insects July June large number larva larvæ later legs Length Lepidoptera Linn longer male margin median mesonotum mesothorax metathorax middle moths moult nearly North observed ocelli pale palpi paper plants posterior probably Prof prothorax pupa pupation reddish rounded scutellum seen segment short side species specimens spines spots stages stripe taken tarsi third thorax tibiæ tomentose transversal trees tubercles upper vein whitish Wings hyaline wood yellow yellowish