Synonyms and other taxonomic changes
Bradycinetulus Cockerell 1906
=Amechanus Horn 1870
=Bradycinetus Horn 1871
Numbers
Bradycinetulus ferrugineus (Palisot de Beauvois 1809) - SE Virginia, North Carolina to Florida, west to Mississippi
Bradycinetulus fossatus (Haldeman 1853) - Wisconsin, Texas, Nebraska, Arkansas
Bradycinetulus rex Cartwright 1953 - Texas
Identification
Key to the species of Bradycinetulus (after Cartwright 1953)
1 Eye canthus nearly straight edged laterally, wide clypeal horn of male bisinuate apically, the external angles projecting forward, acute, and scarcely thicker than the adjacent edges, which converge posteriorly; median thoracic horns heavy, directed upward, their sharply rounded tips recurved posteriorly (North Carolina to Florida and Mississippi) ................................................................. B. ferrugineus (Palisot de Beauvois)
1’ Eye canthus notched or emarginated, not straight edged laterally ................. 2
2 Wide clypeal horn of male distinctly trinodose apically, the external angles not projecting beyond median point, lateral edges parallel; median thoracic horns heavy, projecting forward and outward, sharply rounded and very little recurved (Nebraska to Texas and Arkansas) .......................................................... B. fossatus (Haldeman)
2’ Apex of clypeal horn of male widely truncate, straight across, the external angles slightly nodose, lateral edges parallel over apical two fifths, then diverging to base; median thoracic horns slender, directed forward and upward, basally flattened in front and behind (Texas) ............................................................... B. Rex Cartwright
