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1.
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Elytral margin
with clear, membranous border (best seen
at apex of elytra). Central Chile and Argentina to Tierra del
Fuego (Brachysternina) |
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1'.
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Elytral
margin without clear membranous border. Central México to northern
Argentina |
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2(1).
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Unguitractor
plate with 3 or more setae. Elytron bearing white, scale-like setae
(sometimes absent due to abrasion). Claws simple. Tarsomere 5 with
ventromedial tooth |
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2'.
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Unguitractor
plate with 2 setae. Elytron glabrous or bearing white to orange, hair-like,
slender or thick setae. Claws split, toothed, or simple (if simple,
then tarsomere 5 without tooth). Tarsomere 5 with or without ventromedial
tooth |
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3(2).
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Dorsal color
green. Pygidium and abdominal sternites with distinct thick, white
setae (especially laterally at base) when viewed without magnification.
Apex of female terminal abdominal sternite moderately to deeply emarginate.
Male paramere with ventral and lateral sclerites |
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3'.
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Dorsal
color brown to olive green. Pygidium and abdominal sternites usually
with hair-like, slender, inconspicuous setae when viewed without magnification.
Apex of female terminal abdominal sternite rounded. Male paramere
lacking ventral and lateral sclerites |
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4(1).
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Protibial spur
absent. Mesotibia and metatibia robust,
similar in thickness to femora. Tarsomeres robust, thickened, often
wider than long. Central México to Panamá. (Phalangogoniina) |
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4'.
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Protibial
spur present. Mesotibia and metatibia slender in comparison with femora.
Tarsomeres not thickened, often longer than wide. Central México
to northern Argentina. (Platycoeliina) |
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