10 
smoothly into the rest of the head (Fig. 10K) ; 
epinotum with a smaller or inconspicuous flange 
at base of petiole (Fig. 10D) ........----- 
31. First segment of petiole slightly shorter than second; 
epinotum with an almost spinelike flange above 
each posterior spine (Fig. 10/). . 31. Myrmecina 
First segment of petiole longer than second, its 
anterior portion narrow; epinotum usually with- 
Fig. 11.—Pseudomyrmex 
queen, front view of head. 
y 
is 
Fig. 12.—Diagnostic parts of queen ants of the subfamily 
Ponerinae. A, Amblyopone, front view of head; B, Ponera, side 
view of thorax and petiole; C, Amblyopone, side view of thorax 
and petiole. 
Fig. 13.—Diagnostic parts of queen ants of the subfamily 
Dolichoderinae. A, Dolichoderus, side view of thorax and pro- 
podeum—p, posterior projection of epinotum; B, Tapinoma, 
side view of thorax and epinotum; C, Dorymyrmex, side view of 
head—m, maxillary palp. 
out spinelike flange above each posterior spini 
(Fig. 10C, D, G, and H) ........-) 73am 3 
32. Mesal portion of anterior margin of clypeus concay 
(Fig. 10L); ventral side of head with lon 
curved hairs (Fig. 10K) ... 29. Pogonomyrme 
Mesal portion of anterior margin of clypeus pro 
duced, convex, or bilobed (Fig. 10M-Q) ; ven 
tral side of head without such long curved hair 
veut be dete ees 0 oe: +) -itleat at 3 
33. Dorsal profile of thorax forming an even (Fig. 10H 
or only slightly indented are (Fig. 10D) ..... 3 
Dorsal profile of thorax markedly steplike or sinuat 
(Fig. 10C) ..........+-¢529 0 3 
34. Head with straight and strong striae over its enti 
front and dorsal surface (Fig. 10N) ; dark brow 
aNnt$. 05 .sn bees 35. Tetramoriw 
Head covered with weak striae, many connecte 
with cross-striae to give a reticulate appearanc 
(Fig. 100) ; light brown ants, usually with a pa 
of dark brown suffusions on the abdomen 
bvacee vance sls dee 36. Leptothorz 
35. Second antennal segment not much longer the 
third segment; scape extending far above dors 
margin of head (Fig. 10P) .. 30. Aphaenogast 
Second antennal segment as long as next two | 
three combined; scape not as long (Fig. 10: 
and Q) ....- 00+ ++ oes ote 
36. Eyes as large as in Fig. 10M and last three antenn 
segments enlarged into a club; two types 
workers, one with a greatly enlarged head 
ode vg eeedle. (00 eos dh it aon 33. Pheidc 
Eyes smaller and antennal club not pronounce 
(Fig. 10Q) ; only one type of worker, with orc 
nary-sized head ..........+55% 32. Stenamr 
KEY TO SUBFAMILIES AND GENERA (QUEENS) 
1. Petiole two segmented (Fig. 3) ....+--++++5+: 
Petiole one segmented (Fig. 12B) ....-.+-:+++ 
of the subfai 
A, Polyergus; B, Camponotus; C, Lasws; 
Fig. 14.—Front views of heads of queen ants 
Formicinae. 
Formica. 
