Bagous fractus

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 : 47

22. Bagous fractus group

Diagnosis. Penis body widest in front of dorsal process (char. 83.1), with ventral surface distinctly bicarinate (char. 71.2). Arms of spiculum ventrale apically broadly fused, leaving a small to large membranous central fenestra.

Remarks. O'Brien et al. (1995) included B. fractus and B. fractodes , reciprocally similar in habitus, in the same group, expressing however reservations concerning important differences they share in the shape of the penis. A close relationship between these two species was not supported by our analysis. In B. fractus the apex of the penis body is curved on the left only at its strict apex (as in B. simulans and B. apicalis ) but not as in B. frit where the penis body is curved on the left from the apical third.

Species included. PAL: * Bagous fractus O'Brien & Morimoto, 1994 .