Euscelus

Hamilton, Robert W., 2007, Euscelus species of the West Indies (Coleoptera: Attelabidae), Zootaxa 1495 (1), pp. 1-34 : 4-5

KEY TO WEST INDIES SPECIES OF EUSCELUS

1 Body coarsely punctured (figs. 13–48)........................................................................................................2

- Body finely punctured (figs. 49–68).......................................................................................................... 10

2 Elytra with distinct posthumeral spines, projections or denticles .............................................................. 3

- Elytra without posthumeral spines, projections or denticles; posthumeral area evenly rounded or weakly angulate........................................................................................................................................................ 8

3 Elytra with long acute posthumeral spine on each elytron (Figs. 13–16); Cuba, Dominican Republic, Haiti........................................................................................................................ E. armatus (Gyllenhal)

- Elytra without long acute posthumeral spine on each elytron; elytral post humeral armature consisting of broadly acute tooth like denticles or short blunt denticles..........................................................................4

4 Scutellum yellowish, distinctly set off from reddish-brown elytra and pronotum (Figs. 17–20); Cuba, Dominican Republic, Haiti, Trinidad....................................................................... E. scutellatus (Klug)

- Scutellum not yellowish, reddish-brown as in elytra and pronotum .......................................................... 5

5 Posthumeral elytral armature consisting of broadly or narrowly rounded short denticle ........................... 6

- Posthumeral elytral armature consisting of distinct triangular projection ................................................. 7

6 Elytral intervals and interspaces weakly raised, densely punctured; elytra distinctly narrowed from humeri to apices; posthumeral denticle short, broadly rounded ( Figs. 21–24 ); Dominican Republic..................... .................................................................................................................................... E. postoculidens n. sp.

- Elytral intervals and interspaces strongly raised, smooth, shiny; elytra weakly narrowed from humeri to apices; posthumeral denticle short, narrowly rounded (Figs. 25–28); Cuba, Dominican Republic, Haiti, Jamaica, Puerto Rico, Virgin Islands.................................................................. E. dentipes (Fabricius)

7 Elytral intervals strongly raised, smooth, reticulate (Figs. 29–32); Cuba, Dominican Republic............... .............................................................................................................................. E. angulosus (Gyllenhal)

- Elytral intervals weakly raised, densely punctured, with minute cross striations (Figs. 33–36); Dominican Republic, Haiti, Puerto Rico.................................................................................. E. scrobiculatus Voss

8 Most elytral intervals and interspaces, pale yellowish to light yellowish-brown; strial punctures reddishbrown (Figs. 37–40); Haiti, Dominican Republic..................................................... E. uviferae Marshall

- All elytral intervals, interspaces and strial punctures reddish-brown.......................................................... 9

9 Each elytron with four distinct, raised, yellowish spots; first spot on side below humerus; second spot largest, beside scutellum, irregularly shaped; third and fourth spots longitudinally oval, on second and fourth interval just beyond middle of elytra (Figs. 41–44); Cuba.......................... E. pulchellus (Suffrian)

- Elytra reddish-brown throughout; without raised yellowish spots (Figs. 45–48); Cuba, Dominican Republic................................................................................................................... E. cribrarius (Olivier)

10 Each elytron with one large ovo-convex yellowish-white basal spot; spot truncated along elytral base (Figs. 49–52); Jamaica, Puerto Rico................................................................... E. biguttatus (Fabricius)

- Each elytron not as above; each elytron with more than one spot or mark ............................................... 11

11 Each elytron with three yellowish-white spots; one large spot near scutellum, one sub-humeral spot and one posterior spot near declivity................................................................................................................ 12

- Each elytron with three or more yellowish-white spots or marks; if three spots, one large spot near scutellum and two posterior spots near declivity................................................................................................13

12 Pronotum with dark wide longitudinal stripes; stripes sometimes faint, sometimes fusing across middle; elytral spots distinct on darker elytra (Figs. 53–56); Cuba, Puerto Rico, Virgin Islands.......................... .......................................................................................................................... E. sexmaculatus (Chevrolat)

- Pronotum without dark stripes, reddish-brown throughout; elytral spots weakly defined on pale elytra (Figs. 57–60); Bahama Islands, Cuba, Dominican Republic, Haiti, Puerto Rico................................... .................................................................................................................................. E. aureolus (Gyllenhal)

13 Pronotum with two narrow dark longitudinal stripes; stripes usually also present on sides of head ( Figs. 61–64 ); Dominican Republic, Haiti............................................................................... E. haitensis n. sp.

- Pronotum without dark longitudinal stripes, with irregular line like marks on each side of middle ( Figs. 65– 68 ); Dominican Republic, Haiti................................................................................ E. dominicanus n. sp.

Figures

FIGURES 21–24. E. postoculidens: 21 & 22 male holotype, abdomen removed; 23 & 24 female allotype.

FIGURES 61–64. E. haitensis: 61 & 62 male holotype, abdomen removed; 63 & 64 female allotype.

FIGURES 65–68. E. dominicanus: 65 & 66 male holotype, abdomen removed; 67 & 68 female allotype