Bagous interruptus

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 : 44

13. Bagous interruptus group

Diagnosis. Pronotum with prominent to acute anterolateral tubercle (scarcely evident in B. peregrinus and B. meregallii ) (char. 27.1). Sclerites complex within tube of penis body with two posteriorly joined pairs of subapical sclerites, one submedian and the other sublateral (char. 84.5). Pseudo-orifice large to very large, apparent orifice strongly extended proximally (excluding B. meregallii ). Arms of spiculum ventrale in relation to apodemes sometimes in a lower level.

Remarks. Whereas the external habitus of some species that belong to this group, like B. meregallii , is markedly different from others, the shape of the very characteristic male genitalia is extraordinarily similar in all of them. Monophyly of this group was weakly supported in BI (66% pp) and ML (65% bs) but was not supported in MP. The two North American species B. setosus and B. buchanani belong to this group, and LeConte (1876) created for these species the new genus Pnigodes , on the basis of the shape of the pronotum.

This group presently includes species from all regions except Australia.

Species included. AFR: ² Bagous fragosus Marshall, 1920 , ² B. hybridus Hustache, 1923 ; NAR: ² B. buchanani ( Tanner, 1943) , *² B. setosus ( LeConte, 1876) ; ORR: *¹ B. interruptus Faust, 1891 , ² B. salebrosus O'Brien & Pajni, 1995 , ² B. sumatrensis Faust, 1891 , ² B. tonkinianus Hustache, 1926 ; PAL: *³ B. bulgaricus Angelov, 1989 , ² B. foveifrons Hustache, 1923 , ² B. meregallii Caldara & O’Brien, 1998 , ² B. peregrinus Gratshev, 1993 , ² B. sardiniensis Brisout de Barneville, 1863 .