132 A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 
Promyrmecia clarki Crawley 
Plate XVI, figs. 74-76 
Myrmecia clarki Crawley, Ann. Mag. Nat. Hist., 9, ix, p. 432, 1922, Ss. 
Myrmecia (Promyrmecia) clarki Wheeler, Colony-founding among Ants, 
p. 61, fig. 23, 1933, 3 2. 
Worker. Length 11-13 mm. 
Black; funiculi and legs blackish-brown, tarsi lighter, mandibles yellow. 
Apical half of mandibles coarsely striate, basal half finely punctate-reticulate. 
Head finely striate-rugose longitudinally, very finely and densely reticulate between 
the striae. Pronotum, mesonotum and epinotum strongly striate longitudinally, 
declivity transversely striate. Node longitudinally striate-rugose. Postpetiole and 
gaster microscopically reticulate. 
Hair yellow, sparse, very short and erect, finer and suberect on legs. Very long 
end abundant at apex of gaster. Pubescence yellow, very fine and short, forming 
a distinct covering on postpetiole and gaster but not hiding the sculpture. 
Head very slightly broader than long, occipital border feebly concave, sides 
convex, angles rounded. Mandibles slender, longer than head by their width at 
base, external borders concave in middle, apical half of inner border furnished 
with large, sharp, erect teeth, basal half with short broad teeth directed backward. 
Scapes extend about half their thickness beyond occipital border; second segment 
of funiculus one-sixth longer than first, third as long as first, remainder subequal. 
Thorax fully twice as long as broad. Pronotum twice as broad as long, sides and 
front strongly convex, dorsum flat laterally. Mesonotum one-fourth broader than 
long, oval, convex in all directions. Epinotum flat laterally; in profile pronotum 
strongly convex from, apex to base, pro-mesonotal suture weakly impressed. Meso- 
notum flatly convex, highest behind ; meso-epinotal suture deep and wide. Epinotum 
evenly convex from base to bottom of declivity. Node very slightly broader than 
long, strongly convex in all directions; in profile higher than long, stalk sloping 
down at an acute angle in front, anterior and posterior faces straight, vertical, 
dorsum feebly convex, angles rounded; ventral spine very short, erect and sharp. 
Postpetiole almost twice as broad as long, sides and front strongly convex; con- 
struction deep and narrow. First segment of gaster one-seventh broader than 
long, sides strongly convex. Legs slender. 
Female. Length 16-16°5 mm. 
Colour, sculpture and pilosity as in the worker. Wings hyaline, nervures brown. 
Head somewhat similar but broader behind. Mandibles shorter and broader, 
shorter than head, external borders straight, inner border furnished with similar 
but larger and stronger teeth. Scapes not extending to occipital border by fully 
their thickness, second segment of funiculus one-fourth longer than first. Eyes 
not occupying half the sides, their posterior margin at middle of sides. Ocelli 
small but prominent. Mesonotum with well-defined mayrian furrows. Node almost 
one and one-half times broader than long, anterior and posterior faces short and 
straight, sides strongly convex. Postpetiole twice as broad as long. 
Male. Length 11-12 mm. 
Black. Mandibles yellow, antennae and anterior legs reddish-yellow, middle and 
posterior legs brown. Wings hyaline. 
Head, thorax and node punctate-rugose, epinotal declivity transversely finely 
striate-rugose. Very finely and densely reticulate between the punctures. Post- 
petiole and gaster microscopically reticulate. 
Hair as in the worker but not so abundant. 
Head as long as broad, occipital border straight, sides convex, angles broadly 
