Revision of the Genus Ischyrus Lacordaire (1842) of North and Central America (Coleoptera: Erotylidae)

This revision treats species of the genus Isclzyrus Lacordaire 1842, sensu Crotch 1876 (Micrisclzyrus Alvarenga 1965), occurring from Panama north. A key to species, descriptions and illustrations of terms used, habitus and genitalic illustrations for all species, distribution maps, detailed species descriptions, complete synonymies, label data from specimens studied, and comparisons with similar species are presented. A list of all names used in combination with lschyrus and their current status is presented to prevent future homonyms. This revision treats 45 species: 26 previously described species plus 19 new species: lschyrus audbalus, I. ceIatus, I. cordiformis, I, erosus, I. goliai, I. ichnus, I. impressus, I. joplini, I. kovariki, I. malleus, I. mimus, I. monochromatus, I. mystacis, I. parallelus, I. parcarum, I. poseidon, I. putei, I. pyropodus, I. sapphirus. Nine names were found to be junior synonyms: I. quinquepimctatus Gorham 1887 placed under I. angularis Lacordaire 1842; Episcaphula bellopicta Kuhnt 1910 placed under I. auriculatus Lacordaire 1842; I. peruvianus Gorham 1883 placed under I. boucardi Crotch 1876; I. gratiosus Guerin-Meneville 1844 placed under I. incertus Lacordaire 1842; I. subcylindricus Lacordaire 1842, I. graphicus Lacordaire 1842, and I. puncticollis Gorham 1887 placed under I. quadripunctatus quadripunctatus (Olivier 1792); Dacne femoralis Chevrolat 1841 and I. velatus Lacordaire 1842 placed under I. scriptus (Olivier 1801). lschyrus chiasticus Boyle 1954 is reduced 10 a subspecies of I. quadripunctatus (Olivier 1792). Lectotypes were designated for 23 names: Dacne femoralis Chevrolat, Episcaphula bellopicta Kuhnt, Ischyrus agnatus Crotch, I. angularis Lacordaire, I. auriculatus Lacordaire, I. bogotae Crotch, I. boucardi Crotch, I. collatinus Crotch, I. distinguendus Lacordaire, I. elegantulus Lacordaire, I. ephippiatus Gorham, I. frolltalis Lacordaire, I. graphicus Lacordaire, I. gratiosus Guerin-Meneville, I. insolens Crotch, I. maculiventris Lacordaire, I. peruvianus Gorham, I. proximus Lacordaire, I. septemsignatus Gorham, I. subcylindricus Lacordaire, I.tripunctatus Crotch, I. velatus Lacordaire, I. vespertilio Lacordaire.