Hylaeogena circularis (Kerremans, 1899)
Pachyschelus circularis Kerremans, 1899: 354 . Hylaeogena circularis: Hespenheide, 1979: 112 . Hylaeogena bruchi (Kerremans, 1903) syn. nov. Pachyschelus bruchi Kerremans, 1903: 318 .
Hylaeogena bruchi: Obenberger, 1925: 143 .
Hylaeogena scutellaris Obenberger, 1925: 146 syn. nov.
In comparing the holotype of H. circularis, the syntypes of H. bruchi from BMNH and the syntypes of H. scutellaris from NMPC, no significant difference was found and hence all examined specimens are considered conspecific.
Specimens examined:
BMNH: 1 ex.: Holo-/ type [p, round label, red margin] | Jatahy/ Pujol. [h] | circularis / Kerr./ Type [h]. 1 ex.: Syn-/ type [round label, blue margin, p] | Rep. Brasil [p]/ 5.II. [h] 190 [p] 1 [h] | Bruchi / Kerrem./ Type [h] | P. Bruchi / Kerrem. Bresil [h] | Kerremans/ 1903 –59 [p]; 1 ex.: Syn-/ type [round label, blue margin, p] | Bresil / Bruchi [h] | Bruchi / Kerrem./ Type [h] | Kerremans/ 1903 –59 [p].
NMPC: 2 ex.: Rep. Brasil / 17. III.1901 / C.Bruch [p, h] | TYPUS [p, red label] | Hylaeogena / scutellaris m. Type [h]/ Det Dr. Obenberger [p].