Longeumolpus is a genus of leaf beetles in the subfamily Eumolpinae. It is mainly found in South America, though the type species (Longeumolpus imperialis) has also been reported from Martinique in the Lesser Antilles of the West Indies. The genus was established in 1960 by the Czech entomologist Bohumila Špringlová de Bechyně (wife of Jan Bechyně) as a close relative of Eumolpus.
One of the generic characters separating Longeumolpus from Eumolpus is the length of the aedeagus in the males: in Eumolpus, the aedeagus is short, and always less than half the length of the abdomen, while in Longeumolpus, the aedeagus is very long and is at least three quarters of the abdomen's length.
Species The following species are described in Longeumolpus:
Longeumolpus amabilis Špringlová, 1960 Longeumolpus amabilis amabilis Špringlová, 1960 – Peru, Brazil Longeumolpus amabilis pebensis Špringlová, 1960 – Peru Longeumolpus amabilis weyrauchi Špringlová, 1960 – Peru Longeumolpus batesi (Baly, 1877) Longeumolpus batesi batesi (Baly, 1877) – Brazil Longeumolpus batesi benjaminus Špringlová, 1960 – Brazil Longeumolpus bolivianus Špringlová, 1960 – Bolivia Longeumolpus carinatus (Baly, 1877) – Brazil, Peru, Colombia Longeumolpus compar Špringlová, 1960 – Peru Longeumolpus dimorphus Špringlová, 1960 – Brazil Longeumolpus emigratus Špringlová, 1960 Longeumolpus emigratus emigratus Špringlová, 1960 – Peru Longeumolpus emigratus mesosternalis Špringlová, 1960 – Bolivia Longeumolpus ferox Špringlová, 1960 Longeumolpus ferox borbensis Špringlová, 1960 – Brazil Longeumolpus ferox ferox Špringlová, 1960 – Brazil Longeumolpus ferox parkoi Špringlová, 1960 – Brazil Longeumolpus imperialis (Baly, 1877) – French Guiana, Martinique Longeumolpus laeviusculus Špringlová, 1960 Longeumolpus laeviusculus corpulentus Špringlová, 1960 – Brazil Longeumolpus laeviusculus discocostatus Špringlová, 1960 – Brazil Longeumolpus laeviusculus laeviusculus Špringlová, 1960 – Peru Longeumolpus laeviusculus manesus Špringlová, 1960 – Brazil Longeumolpus prasinus (Erichson, 1847) – Peru Longeumolpus spathulatus Špringlová, 1960 – Brazil Longeumolpus speciosus (Baly, 1877) – Guianas, Brazil Longeumolpus stenotypus Špringlová, 1960 – Ecuador Longeumolpus subcostatus (Lefèvre, 1885) Longeumolpus subcostatus sabanillensis Špringlová, 1960 – Colombia Longeumolpus subcostatus subcostatus (Lefèvre, 1885) – Ecudador
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