Bagous tempestivus

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 : 42

7. Bagous tempestivus group

Diagnosis. Elytra elongate, distinctly wider than pronotum; elytral vestiture tessellate, with distinct stripe in front of declivity. Tarsi long, sublinear. Penis body with pair of movable (char. 80.1), elongate sclerotized plates covering orifice and attached to the orificial margin (char. 79.3), and with median short prominence only visible when plates are opened (char. 81.1).

Remarks. This group is well distinguished from the other species groups by the general habitus, which is characterized by the elongate elytra that are also distinctly wider than the pronotum and which are partly covered with white scales forming a distinct subapical stripe. However, the main difference is in the uncommon shape of the penis body, in which two submedian sclerites are attached to the basal margin of the orifice. Presently this group is composed of three very closely related Palaearctic species, which are reciprocally distinguished by the slightly different shape of tarsomere 3 and/or the shape of the penis. Based on the mtCOI analysis ( Fig. 12 ), B. tempestivus resulted associated with B. monanthifagus and B. exilis , with 81% pp support.

Species included. PAL: ¹ Bagous czwalinai Seidlitz, 1891 , ¹ B. macedon Caldara & O’Brien, 1998 , §*¹ B. tempestivus (Herbst, 1795) .

Figures

FIGURE 12. Mitochondrial cytochrome oxidase I analysis. Bayesian consensus tree (50 % majority rule). Codes after the species name are GenBank Accession Numbers. Scale bar unit: expected substitutions per site.