Dyscolotaxia Horn, 1890

Otto, Robert L., 2023, A revision of Dyscolotaxia Horn, 1890 (Coleoptera: Eucnemidae: Macraulacinae: Macraulacini), with the description of Amazotaxia new genus from South America, Insecta Mundi 2023 (21), pp. 1-15 : 3

Genus Dyscolotaxia Horn, 1890

Type species. Dyscolotaxia championi Horn 1890: 239 , by monotypy.

Diagnosis. Apical margin of frontoclypeal region feebly trilobed and more than twice as wide as the base; antennae capitate with elongate flagellomeres VI–IX; basally open lateral antennal grooves present; male sex combs basally present on prothoracic tarsomere I; elytral striae well developed, smooth, not punctate; metathoracic coxal plates medially 3.0–6.0 times wider than laterally; males with pair of setose sex patches present on abdominal sternites 2 and 3; elytral epipleura evenly punctate, not grooved; last visible ventrite either produced or rounded; tarsal claws simple; lateral surfaces of mesothoracic and metathoracic tibiae with setae and transverse rows of spine combs.

Diversity. This previously monotypic genus now consists of four species, all of which are distributed in the Neotropical region, particularly southern Central America south through northwestern South America and the island of Hispaniola. Dyscolotaxia championi Horn , the genotype for the group, has been taken in Central America, particularly Costa Rica and Panama. One new species is endemic to Panama. A second new species is also an endemic species found in the Dominican Republic on the island of Hispaniola. The last new species is known only from Ecuador.