Bagous americanus

ROBERTO CALDARA, CHARLES W. O’BRIEN & MASSIMO MEREGALLI, 2017, A phylogenetic analysis of the aquatic weevil tribe Bagoini (Coleoptera: Curculionidae) based on morphological characters of adults, Zootaxa 4287 (1), pp. 1-63 : 49

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 .