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1.
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Protibia
tridentate |
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1'.
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Protibia
quadridentate |
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2(1).
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Mandibles
completely hidden beneath clypeus. Apex of clypeus strongly bilobed
and sharply reflexed |
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2'.
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Mandibles
visible in dorsal view. Apex of clypeus emarginate or bidentate, not
strongly reflexed |
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3(2).
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Frons
with 2 small tubercles. Pronotum in both sexes simply convex and with
double tubercle behind anterior margin |
Tehuacania Endrödi
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3'.
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Frons
with horn or 1 tubercle. Pronotum in males usually with horn or tubercles
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4(3).
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Protarsus
of males enlarged. Clypeus truncate. Mandibles tridentate. Frons in
both sexes with tubercle. Jamaica |
Calypsoryctes Howden |
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4'.
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Protarsus
not enlarged. Clypeus not truncate. Mandibles tridentate or not. Frons
and pronotum usually with distinct armature. Not Jamaica |
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5
(4).
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Elytra
punctate, reddish brown |
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5'. |
Elytra
smooth, black. Clypeal apex rounded or bidentate |
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6(5).
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Elytra
with 5 distinct rows of punctures on relatively smooth surface. Mandibles
tridentate. Clypeus with apex sharply bidentate |
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6'
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Elytra
completely roughened, with weak rows of punctures. Mandibles bidentate.
Clypeus with apex lobed either side of median emargination |
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7(5).
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Mandibles
bilobed. Propygidium with 2 stridulatory bands |
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7'.
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Mandibles
tridentate. Propygidium with large, cental, stridulatory area |
Megaceropsis
Dechambre |
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8(1).
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Frons
with 2 small tubercles. Clypeal apex in males with short, recurved
horn, clypeal apex in females narrow, slightly upturned. Pronotum
in males with tubercle either side of broad, median depression, females
with fovea |
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Lichnostrategus Prell |
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8'.
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Combination
of characters different |
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9(8).
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Head
short, broadly triangular. Mandibles broad, strongly projected besides
clypeus. Frons with short, transverse plate. Pronotum slightly impressed,
with double tubercle behind anterior margin |
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9'.
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Head
normal, not short and triangular |
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10(9).
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Body
form elongate, subparallel. Protibia with teeth projecting almost
at right angles. Apex of metatibia with 2 strong teeth. Males with
anterior half of pronotum nearly smooth and with single, median horn
or tubercle. Females without fovea on pronotum |
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10'.
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Body
form broader, sides rounded (not subparallel). Protibia with teeth
projecting obliquely. Apex of metatibia crenulate or with 1, 3, or
4 teeth. Males with anterior half of pronotum densely punctate or
rugose or, if nearly smooth, then with lateral horns or tubercles.
Females with or without fovea on pronotum |
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11(10).
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Both
males and females with head horn. Prosternal process short. Pronotum
with anterior margin distinctly emarginate at center |
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11'.
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Males
with or without head horn; females never with head horn, instead tuberculate
at most. Prosternal process long, subconical or peg-like. Anterior
margin of pronotum lacking emargination at center |
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12(11).
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Frons
in male usually with horn or with single tubercle; females with 1
or 2 tubercles |
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12'.
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Frons
in both sexes unarmed or with 2 tubercles
. |
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13(12).
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Frons
in both sexes with tubercle. Clypeal apex strongly produced, especially
in males. Club of antenna nearly as long as stem. Pronotum in both
sexes simply convex |
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Hispanioryctes Howden & Endrödi |
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13'.
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Males
usually with distinct head horn; females with single tubercle. Club
of antenna shorter than stem. Pronotum in males with horn or prominence
arising from posterior half and with or without lateral horns; females
usually lacking pronotal fovea |
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