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3. The pine root-collar weevil;Schaffner;J. For.,1944
4. An apparently new species of North American Hylobius, with synoptic key (Coleoptera: Curculionidae);Buchanan;Proc. Ent. Soc. Wash.,1934
5. Pales weevil (H. pales);Felt;U.S. Dept. Agr., Bur. Ent. Plant Quar., Ins. Pest Surv.,1926