A phylogenetic analysis of the aquatic weevil tribe Bagoini (Coleoptera: Curculionidae) based on morphological characters of adults Author ROBERTO CALDARA Author CHARLES W. O’BRIEN Author MASSIMO MEREGALLI text Zootaxa 2017 2017-07-05 4287 1 1 63 journal article 32713 10.11646/zootaxa.4287.1.1 91e8f5fd-1e15-4c4f-872f-3d4c50d0c8a7 1175-5326 829051 13C4F702-EF00-4F04-B38E-3F0AA6CAF718 29. Bagous americanus group Diagnosis. Tarsi elongate; all tarsomeres with similar width. Penis body with ventrobasal area medially depressed, ventrolaterally slightly costate at base (char. 71.1). Postorificial dorsal process of penis body almost horizontal, directed distally (char. 98.1). Lateral margin of penis body behind dorsal process markedly carinate, the surface ventral to the carina markedly excavate, the dorsal surface mesad of the carina markedly depressed (char. 108.1). Dorsal surface of penis body, medially, behind dorsal process more or less markedly raised, forming acute, longitudinal, median carina (char. 109.1). Remarks. This North American group is distinguished by two unique character states of the male genitalia (char. 108.1 and 109.1). Species included. NAR: *¹ Bagous americanus LeConte, 1876 , ¹ B. blanchardi Blatchley, 1916 , ¹ B. longirostrus Tanner, 1943 , ¹ B. magister LeConte, 1876 .