Megapeostus arcaeceps (Clay, 1937)
Heterogoniodes arcaeceps Clay, 1937: 152, fig. 11.
San Luis Potosí: Crypturellus cinnamomeus mexicanus, Río Axtla, 21 Apr. 1947, R.J. Newman (Carriker 1954a) . No State: Crypturellus cinnamomeus mexicanus no data (Clay 1937).
Type: Holotype male deposited in the NHML.
Note: Specimens of M. arcaeceps were identified by Carriker (1954a) as “ Heterogoniodes arcaeceps Clay ”.