Genus Macroxenus Brölemann, 1917

TYPE SPECIES. — Polyxenus rubromarginatus Lucas, 1846 .

SPECIES INCLUDED. — Macroxenus rubromarginatus; M. caingangensis (Schubart, 1944); M. enghoffi Nguyen Duy-Jacquemin, 1996 .

REMARKS

This genus was created by Brölemann (1917) for the type species Polyxenus rubromarginatus Lucas, 1846 from Algeria (environs of Oran). Brölemann (1917) redescribed this species from material collected at Blida (alt. 1500 m).

KEY TO THE SPECIES OF THE GENUS MACROXENUS BRÖLEMANN, 1917

1. 1 dorsal row of 5-7 sensilla basiconica on antennal article VI ..................................... 2

— 1 dorsal group with 13 or more sensilla basiconica on antennal article VI ... M. enghoffi

2. Antennal sensilla basiconica thick and short .................................. M. rubromarginatus — Antennal sensilla basiconica thin and long ......................................... M. caingangensis