| workers
and females |
| 1 |
Well
differentiated postpetiole segment present (Figs. 14, 51) |
2 |
| -- |
Postpetiole segment absent (Figs. 16, 19) |
4 |
| 2
(1) |
Frontal carinae, narrow, not expanded laterally, antennal sockets
fully exposed in frontal view (Figs. 31, 33) |
3 |
| -- |
Frontal carinae expanded laterad, antennal sockets at least
covered in frontal view (Figs. 60, 107, etc.) |
Myrmicinae |
| 3
(2) |
Eye large and covering much of side of head, consisting of hundreds
of ommatidia (Fig. 52); female mesosoma with flight sclerites |
Pseudomyrmecinae |
| -- |
Eye absent or vestigial and consisting of only one ommatidium
(Fig. 38); female mesosoma without flight sclerites (Fig. 48)
|
Ecitoninae |
| 4
(1) |
Gaster without constriction between first and second segments
(Fig. 17); functional sting absent |
5
|
| --
|
Gaster
constricted between first and second segments (Fig. 16); sting
present, functional |
6 |
| 5
(4) |
Acidopore present, terminal, circular and usually fringed with
setae (Fig. 19); petiole usually erect and scalelike |
Formicinae |
| -- |
Acidopore
absent, gaster with preapical, ventral anal slit (Fig. 18a);
petiole often low and strongly inclined |
Dolichoderinae
|
| 6
(4) |
)
Pygidium with row of stout spine-like setae on each side, convergent
to apex (Fig. 26); genal and scrobal carinae present (Figs.
26, 27) |
Cerapachyinae |
| -- |
Pygidium
without stout spine-like setae (Fig. 11); genal and scrobal
carinae absent (Figs. 22, 23) |
Ponerinae |
| |
|
|
| |
|
|
| |
Males
|
|
| 1 |
Postpetiole present
|
2 |
| --
|
Postpetiole
absent |
3 |
| 2(1)
|
Clypeus
not extending dorsad between frontal carinae; eye large, elongate,
subreniform; antenna 12-segmented; notauli absent |
Pseudomyrmecinae |
| -- |
Clypeus extending dorsad between frontal carinae; eye often
large, but usually more or less hemispherical; antenna 10-13
segmented; notauli often present |
Myrmicinae |
| 3(1) |
Gaster not constricted between first and second segments; mandible
usually well?developed |
4 |
| -- |
Gaster constricted between first and second segments; mandible
poorly developed |
6 |
| 4(3)
|
Hypopygium
entire or emarginate, but without distinct apical teeth; mandibles
poorly developed or short and triangular; gaster more or less
triangular, with apical segments distinctly telescoped |
5 |
| -- |
Hypopygium
with 3 apical teeth; mandibles always prominent, elongate and
rather broad or distinctly sickle?shaped, never short and triangular;
gaster elongate?cylindrical |
Ecitoninae |
| 5(4) |
Scape short, SL less than combined lengths of next four segments;
anterior tentorial pit at or above lower margin of antennal
socket; petiole node usually low and strongly inclined; head,
in profile, often flattened |
Dolichoderinae
|
| --
|
Scape
elongate, SL equals or exceeds combined lengths of next five
segments; anterior tentorial pit distinctly below level of lower
margin of antennal socket (except in Brachymyrmex); petiole
node usually fully erect; head, in profile, not strongly flattened |
Formicinae |
| 6(1) |
Petiole node, in profile, triangular and sharply differentiated
from gaster; forewing, when present, with closed submarginal,
marginal, and two discoidal cells |
Ponerinae |
| --
|
Petiole
node, in profile, low and quadrate, not sharply set off from
gaster (Fig. 28); forewing with open or weakly closed submarginal
cell and one discoidal cell |
Cerapachyinae |