Key to genera of Hispaniolan Acanthocinini

1. Each elytron with one or two pronounced tufts of black setae........................... 2 — Each elytron without one or two pronounced tufts of black setae........................ 4

2(1). Antennae, legs, and elytra covered in very long setae, as long as tufts of setae at elytral base; pronotum with narrow, short, acute lateral tubercles.................. Eneodes Fisher

— Antennae, legs, and elytra without long setae covering surface; pronotum with broad lateral tubercles........................................................................ 3

3(2). Each elytron with one pronounced tuft of setae at base; antennal scape not swollen at middle..................................... Luctithonus Lingafelter, new genus

— Each elytron with one pronounced tuft of setae at base and another at middle; antennal scape swollen at middle............................ Duocristala Lingafelter, new genus

4(1). Antennae much shorter than body; elytra deflexed at apical third..... Eugamandus Fisher

— Antennae extending to at least apex of elytra; elytra without distinct deflection at apical third........................................................................... 5

5(4). Pronotum with narrow, acute, posteriorly positioned and posteriorly angled lateral tubercles and with a transverse row of punctures along posterior margin............ Urgleptes Dillon

— Pronotum with lateral tubercles either absent, very broad and indistinct, or positioned at middle and extending laterally....................................................... 6

6(5). Elytra with scattered, erect bristles in addition to short, depressed setae; outer elytral apex produced into pronounced spine................................... Alcidion Sturm

— Elytra without scattered erect bristles; outer elytral apex sometimes sharply angled, but never produced into a long spine..................................................... 7

7(6). Robust, most longer than 1.5 cm.; inner margin of lower eye lobes with 3–6 setigerous punctures each bearing a single, long seta; lateral pronotal tubercle acute with a very broad base, centered, laterally projecting........................................................... 8

— Small, most less than 1.4 cm in length; inner margin of lower eye lobes with, at most, 1 setigerous puncture; lateral pronotal tubercles rounded or indistinct........................... 9

8(7). Mesosternal process with small central tubercle; disc of pronotum with pronounced tubercles; males with tuft of long setae at apex of sixth antennomere........ Lagocheirus Dejean

— Mesosternal process without tubercle between mesocoxae; disc of pronotum without tubercles or reduced tubercles; males lacking tuft of long setae on sixth antennomere..................................................................... Trypanidius Blanchard

9(7). Pronotal lateral margin evenly rounded, without lateral tubercle and constriction near base............................................................ Lethes Zayas — Pronotum with rounded lateral tubercle at middle or posterior to middle with constricted base.......................................................................... 10

10(9). Pronotal lateral margin broadly rounded around basal third with a small, rounded, posterolateral tubercle.................................................... Styloleptus Dillon

— Pronotal lateral margin with middle rounded tubercle.............. Leptostylopsis Dillon