A REVISION OF THE GENUS PROMYRMECIA EMERY (FORMICIDAE) 113 
Promyrmecia ruginodis n.sp 
Plate XITI, figs. 20-22 
Worker. Length 12-14 mm. 
Black; mandibles, antennae and legs reddish-brown. 
Mandibles finely punctate-reticulate, three or four fine striae near apex and a 
row of large deep punctures along the inner edge at base of teeth. Head finely 
and longitudinally striate-rugose, large shallow punctures between the rugae, the 
whole surface very finely and densely punctate. Pronotum and mesonotum finely 
striate longitudinally, shining between the striae. Epinotum longitudinally striate 
in front, transversely striate behind. Top of node longitudinally striae-rugose. 
Postpetiole striate longitudinally, densely punctate between the striae. Gaster very 
finely and densely punctate. 
Hair yellow, long and erect, rather sparse on head and thorax, longer and 
abundant on nodes and gaster. Short and suberect on legs. None on antennae 
except a few at apex of scapes. Pubescence yellow, very fine and adpressed, longer 
and abundant on postpetiole and gaster, particularly on middle of first segment, 
where it hides the sculpture. 
Head one-eighth broader than long, sides and occipital border feebly convex, 
angles broadly rounded. Mandibles as long as head, external border feebly concave, 
inner border furnished with six large sharp teeth and a smaller tooth between 
each, Frontal carinae as long as broad behind. Scapes extend to posterior border; 
first segment of funiculus slightly shorter than second, apical as long as second, 
remainder sub-equal. Thorax barely twice as long as broad. Pronotum twice as 
broad as long, convex in all directions. Mesonotum one-third broader than long, 
oval. Epinotum twice as long as broad; in profile pronotum and mesonotum 
combined evenly convex from base to apex; constriction between mesonotum and 
epinotum deep. Epinotum evenly convex from base to foot of declivity. Node 
one-third broader than long, broadest behind, conyex in all directions; in profile 
anterior face straight above, sloping forward from the middle below, posterior face 
feebly concave, or straight, dorsum convex, angles rounded, the ventral spine 
short and sharp. Postpetiole one-third broader than long, sides strongly convex. 
First segment of gaster one-eighth broader than long. Legs robust. 
Female. Length 15 mm. 
Colour and pilosity as in the worker, sculpture coarser particularly on the 
mandibles, head and node. 
Mandibles broader, external border straight, teeth longer. Head square behind. 
Node one-fourth broader than long, oval. Postpetiole almost twice as broad as 
long. In all other respects similar to the worker. 
Male. Length 11:5 mm. 
Black ; mandibles, antennae and legs brown, tarsi lighter. Wings hyaline, nervures 
llow. 
Mandibles finely striate on outer border, smooth and shining in middle and inner 
border. Head finely rugose, very finely and densely punctate between the rugae. 
Pronotum, scutellum, mesonotum and node irregularly punctate-rugose, very densely 
punctate between rugae. Epinotum transversely rugose. Postpetiole finely but 
sharply rugose, very finely and densely punctate, the gaster similarly finely punctate. 
Hair whitish, abundant, long and erect throughout, short and suberect on legs, 
none on antennae. Pubescence white, very fine and adpressed, most abundant on 
postpetiole and gaster, yellowish and longer on middle of gaster but not hiding 
the sculpture. 
Head one-sixth broader than long, strongly convex behind eyes. Mandibles 
