Bagous adelaidae

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 : 48-49

28. Bagous adelaidae group

Diagnosis. Side margins of prosternum in lateral view strongly acute and projecting posterad over procoxae (char. 33.2). Declivital callus of interval 5 small but distinct. Tarsi moderately short and sublinear. Penis body with vertical dorsal process and with setal brush. Basoventral area medially depressed and indistinctly sclerotized, ventrolaterally distinctly bicarinate from apodeme to about one-third length of penis body (char. 71.2). Sublateral margin of penis body behind dorsal process with dorsal, sublateral, carinate (char. 105.1), and denticulate (char. 106.1) ridge bordering median depression.

Remarks. This group is distinguishable by four apomorphic characters, one nongenital and three from the male genitalia, one of which homoplastic (char. 71.2). B. dostinei differs from the other two species of the group by the apex of the dorsal process not directed backward. It is supported in all analyses (BI: 100% pp; ML: 84% bs; MP: 80% sr).

Species included. AUS: *¹ Bagous adelaidae Blackburn, 1894 , *² B. dostinei O'Brien, 1992 , ¹ B. simulans O'Brien, 1992 .