Key to West Indian Canthonella Chapin

(Modified from Matthews 1966, Ivie & Philips 1990)

1. Protibia with 3 teeth on outer margin...........................................................................................................2

- Protibia with 2 teeth on outer margin...........................................................................................................3

2. Elytral interstriae uneven in height, especially on declivity; protibia very narrow; Puerto Rico and the Virgin Islands ............................................................................................................ Canthonella parva Chapin

- Elytral interstriae flat, even in height; protibia widened apically; Hispaniola ............................................... ..................................................................................................... Canthonella constans Matthews (Fig. 22)

3. Elytral macula yellow-orange, reaching base of elytron (Fig. 9); Hispaniola..............................................4

- Elytral macula whitish-yellow, not reaching base of elytron, with at least a narrow black margin at base (Figs. 7, 8); Cuba and Hispaniola.................................................................................................................5

4. Mesad edge of elytral spot reaching or nearly reaching suture; eighth elytral stria strongly punctate .......... ..................................................................................................... Canthonella isabellae Matthews (Fig. 23)

- Mesad edge of elytral spot reaching to 2nd stria; eighth elytral stria impunctate............................................ ....................................................................................................... Canthonella sikesi new species (Fig. 21)

5. Elytral spot ending at or laterad to 3rd stria (Figs 7, 8); labium rounded, truncate or emarginate anteriorly (Figs. 1, 2 and Ivie & Philips 1990, Fig.1); Cuba and Hispaniola................................................................6

- Elytral spot extending at least half-way across 2nd interstia (Ivie & Philips 1990, Figs. 3, 4); labium obtusely produced anteriorly; Hispaniola.....................................................................................................8

6. Labium narrow, subtruncate (Matthews 1966, Fig. 84); Cuba ..................... Canthonella pygmaea (Harold)

- Labium broader, truncate or emarginate (Figs. 1, 2); Hispaniola.................................................................7

7. Elytral ground color castaneous, darker pitchy around elytral spot and along suture, pronotal disc usually castaneous with pitchy base; labium truncate apically (Fig. 1)...................................................................... ................................................................................................. Canthonella jarmilae new species (Fig. 19)

- Elytral and pronotal ground color black; labium emarginate apically (Fig. 2)............................................... ............................................................................................... Canthonella quesqueya new species (Fig. 20)

8. Elytron with triangular spot at apex of interstriae 1, 2, and 3; a smaller (occasionally obsolete) macula at apex of stria 5; 3.3–4.8 mm ............................................. Canthonella baorucensis Ivie & Philips (Fig. 24)

- Elytron immaculate in apical ½; 2.3–3.4 mm ........................ Canthonella howdeni Ivie & Philips (Fig. 25)