Bagous compertus

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 : 35-36

2. Bagous compertus group

Diagnosis. Body elongate-cylindrical. Pronotum 0.90x or more as long as broad (char. 26.1); with more or less distinctly carinate basal margin across middle one-fourth to one-half. Sclerite complex within tube of penis body with pair of submedian, subapical sclerites well separated (char. 84.3). Submedian sclerites subtriangular with point at base (char. 86.1). Ventral surface of penis body broadly membranous.

Remarks. The species of this group are characterized by a long series of external and genital characters, shared with other not closely related or completely unrelated groups, except for one of them (char. 84.3) unique for this group. B. pyrrhocnemus and B. pyrrhocnemodes differ from the other species of the group by the ventrobasal margin of the penis body with short, ventrobasal plate extending between apodemes and forming an acute median point, visible from above (char. 70.2), This structure is shared with B. binodulus , to which the BI analysis suggests a relationship (49% pp). This group is weakly supported in BI (72% pp) and ML (55% bs). It is presently composed of five Indian species, extensively treated and keyed by O'Brien & Askevold (1995).

Species included. ORR: *¹ Bagous compertus Faust, 1888 , ¹ B. limnophilae O'Brien, 1995 , ¹ B. nigrinus O'Brien, 1995 , ² B. pyrrhocnemodes O'Brien, 1995 , *² B. pyrrhocnemus O'Brien, 1995 .