Bagous humeridens

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 : 41

3. Bagous humeridens group

Diagnosis. Pronotal disc moderately to strongly transversely convex. Median impression of ventrite 5 with carinate margin (char. 44.2). Median orificial sclerites with U-shaped, hooked process (char. 82.1). Penis body ventrolaterally with oval lobe in apical third (char. 64.1). Arms of spiculum ventrale with inner margins strongly convergent, joined at ca. midlength (char. 112.1).

Remarks. This group, formed by one Indian and one Australian species, is characterized by one character of ventrite 5 and three unequivocal apomorphic characters in the genitalia. O'Brien & Askevold (1994) placed this group as the sister-group of the B. apicalis group on the basis of several external characters, but this relationship was not supported by our analysis.

Species included. AUS: ¹ Bagous utriculariae O'Brien, 1992 ; ORR: *¹ B. humeridens Hustache, 1926 .