Diarthrotarsus Bergroth, 1905

Lycimna Stål, 1872 was described by Stål (1872) to include L. annulosa Stål, 1872 from Colombia. Because this genus name was preoccupied by Lycimna Walker, 1860 (Lepidoptera), Bergroth (1905) proposed Diarthrotarsus as a new name for it. Wygodzinsky (1948) described three new species of the genus, two from Brazil ( D. malaisei Wygodzinsky, 1948 and D. travassosi Wygodzinsky, 1948) and one from Bolivia ( D. stali Wygodzinsky, 1948). Maldonado (1955) described D. marahuacensis Maldonado, 1955 from Venezuela, totaling a current number of five species included in Diarthrotarsus (Maldonado 1990) . Diarthrotarsus annulosus probably, and all other species of the genus certainly were described based on only one (type) specimen each (Stål 1872, Wygodzinsky 1948, Maldonado 1955). Additionally, with the exception of D. annulosus, described based on at least partly male(s), all other species were described based on females. Stål (1872) and Wygodzinsky (1948) provided detailed descriptions of the genus, while the latter author redescribed D. annulosus based on its type specimen deposited in NHRS.

Diarthrotarsus can be separated from other New World genera of Harpactorini by their two-segmented tarsi and the closed posterior portion of fore acetabula (Stål 1872). Their species are quite similar, with a small set of differences to separate each of them (Wygodzinsky 1948, Maldonado 1955).

Distribution. Brazil, Colombia, Bolivia, French Guiana (new record), Venezuela.