Bagous cylindricus

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 : 45

14. Bagous cylindricus group

Diagnosis. Body elongate-cylindrical. Rostrum distinctly short (char. 4.1), subrectangular, scarcely sexually dimorphic. Pronotum 0.90x or more as long as broad (char. 26.1). Sclerites complex within tube of penis body with two pairs of subapical sclerites, one submedian and well separated from each other and the other sublateral and posteriorly joined (char. 84.5). Tube of penis body ventrally with a V-shaped median sclerite fused to the ventral portion and not movable (char. 85.1). Tegmen lacking parameroid lobes (char. 111.2). Gonocoxite with stylus (char. 117.0) although this is very small.

Remarks. This group is characterized by the rostrum which is shorter than in all other bagoines and by a unique pattern of the endophallic sclerites. In ML and MP this group was very weakly associated to the B. tubulus group, but such a relationship was not supported in BI.

This group is composed by one Palaearctic species and one Afrotropical species

Species included. AFR: ¹ Bagous cylindricollis Hustache, 1923 ; PAL: *¹ B. cylindricus Rosenhauer, 1856 .