Primarily a taxonomic review of the West Indian elements of Apenes LeConte, this paper includes a classification, a key to species, descriptions of taxa, re-rankings, and new synonymy. In total, 45 species and subspecies are treated, 14 (11 species, three subspecies) of which are described as new.The taxa are arranged in the following sequence, with type localities of new species and subspecies in parentheses following the name of the taxon. The seven species of the Apenes variegata species group are included in two species complexes: A. variegata species complex, with A. variegata (Dejean), A. marginalis (Dejean), A. coriacea (Chevrolat), and A. sulcicollis (Jacquelin du Val); and A. morio species complex, with A. parallela (Dejean) (including the subspecies A. p. parallela (Dejean), A. p. inaguae Darlington, and A. p. sublaevis Darlington), A. portoricensis Darlington, and A. morio (Dejean). The A. sculpticeps species group is monobasic in the West Indies, including A. sculpticeps, new species (Barro Colorado Island, Panamá). Also monobasic is the A. prasina species group, including only A. prasina Ball and Shpeley. The A. purpurata species group includes seven species: A. kathleenae Ball and Shpeley; A. purpurata Fleutiaux and Sallé; A. chalumeaui Ball and Shpeley; A. ovalis Darlington; A. aptera Darlington;
A. youngi, new species (13.5 km SE Puerto Escondido, Independencia Province, Dominican Republic, Hispaniola); and
A. pecki, new species (Gran Piedra, Santiago Province, Cuba). The A. lucidula species group includes A. lucidula (Dejean), represented in the West Indies by the subspecies A. l. dulculia Ball and Shpeley, and A. l. michelii Ball and Shpeley, and A. lucia, new species (Anse La Raye, St. Lucia, Windward Islands). The 16 species and six subspecies of the A. fasciata species group are arranged in three species complexes: the monobasic A. farri species complex, including A. farri Ball and Shpeley; the A. fasciata species complex, including A. iviei Ball and Shpeley, A. darlingtoni Ball and Shpeley, A. davidsoni, new species (along Rio Mulito, 13 km N. Pedernales, Pedernales Province, Dominican Republic), and A. fasciata Chaudoir; and the A. lata species complex, including A. lata Darlington,
A. philipi, new species (2 km N. Bayahibe, La Altagracia Province, Dominican Republic), A. dominica Ball and Shpeley, the polytypic A. delicata, including A. d. delicata Darlington, A. d. laevior Darlington, and A. d. cayman Ball and Shpeley, the ditypic A. thomasi, new species, including A. t. thomasi, new subspecies (Great Inagua Island, Bahamas) A. t. swearingenae, new subspecies (Salt Cay, Turks and Caicos Islands), A. toussainti, new species(swamps N. Dessalines, Haiti), A. lepidula Darlington, A. laevicincta Darlington, A. lachauxi, new species (Etang Lachaux, Departement du Sud, Haiti), A. rawlinsi, new species (3 km west of Cueva de Arena, Parque Los Haitises, El Seibo Province, Dominican Republic), the polytypic A. scobifera including A. s. scobifera Darlington, A. s. melaena Ball and Shpeley, A. s. steineri, new subspecies (1.5 km S. Hutland, 19°20′N 81°13′W, Grand Cayman Island), and A. s. turnbowi, new subspecies (Great Inagua Island, Bahamas). The A. postica species group includes A. faber, new species (St. Vincent, Windward Islands), and A. plaumanni (Liebke). The name A. faber is used in place of A. steinheili Ball and Shpeley, which in turn was a replacement name for A. fasciata Steinheil (not Chaudoir), a species known only from Colombia. Apenes laevis Liebke is a junior synonym of A. coriacea (Chevrolat), new synonymy, and Apenes strandi Liebke is a junior synonym of A. delicata delicata Darlington, new synonymy.Ecologically, the species of Apenes are primarily geophilic mesophiles and xerophiles, occupying primarily the forest floor, ranging from lowland dry seasonal to montane wet cloud forest and elfin woodland. A few species occupy also human-disturbed situations or open areas adjacent to sea beaches.