AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
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short and adpressed elsewhere, moderately abundant throughout. Pubescence 
apparent only on funiculus. 
Head one-seventh longer than broad, sides parallel, straight or very feebly 
convex, occipital border feebly convex, angles broadly rounded. Mandibles 
with numerous small sharp teeth. Clypeus broadly convex above, sharply 
convex in front. Frontal area large and deep. Frontal carinae as long as 
broad in front. Scapes extend beyond occipital border by almost half their 
length. Second segment of funiculus one and one-half times longer than 
first, third one-eight longer than first, apical barely as long as the two 
preceding. Eyes rather flatly convex, not projecting at sides, placed behind 
the middle of sides. Thorax two and three-quarter times longer than broad, 
pro-mesonotal suture sharply impressed. Pronotum as long as broad behind, 
convex transversely in front, very weakly convex behind. Mesonotum one- 
third broader than long, strongly convex in all directions and bluntly pointed 
in front. Epinotum strongly convex transversely. In profile pronotum con- 
vex longitudinally, mesonotum flatly convex, epinotum straight, sloping 
downward behind and rounded into declivity, the latter as long as dorsum. 
Node one-third broader than long, strongly convex in all directions. In 
profile one-fourth higher than long, the anterior face straight, descending at 
an acute angle, concave near base, dorsum short and straight, rounded into 
posterior face, anterior superior edge sharp. Ventral spine thorn-like, short, 
broad and sharp. Postpetiole one-fourth broader than long, strongly convex 
behind. The constriction between the segments rather wide but not deep. 
Legs robust. 
Male. — Length, 11-5-12 mm. 
Mandibles, antennae and legs reddish ; head and thorax chocolate-brown, 
node and gaster lighter brown. Wings with a yellowish tinge, nervures brown. 
Mandibles finely and densely striate longitudinally. Head very densely 
reticulate, sparsely and irregularly rugose, the rugae almost transverse on 
clypeus, longitudinal between frontal carinae. Thorax very finely striate- 
reticulate, transverse on pronotum, front of mesonotum and epinotum, irregu- 
lar elsewhere. Mesonotum with large shallow scattered punctures, almost 
obsolete in front, rather deep behind. Scutellum coarsely punctate-rugose, 
the punctures large and shining at bottom. Epinotum with very few shallow 
punctures. Node and gaster very finely and densely reticulate-punctate. 
Hair reddish, moderately abundant, long and erect, short and suberect on 
scapes and legs. 
Head very slightly longer than broad, strongly convex behind. Mandibles 
with numerous small sharp teeth. Clypeus broadly convex in front and 
above, with a short feeble carinae on basal fourth. Frontal area large, feebly 
defined. Frontal carinae slightly longer than broad in front. Second segment 
of funiculus one-fourth longer than scape, first segment one-fourth broader 
than long. Eyes large, occupying fully one-half the sides. Ocelli large and 
convex. Thorax barely twice as long as broad. Pronotum not seen from 
above. Mesonotum strongly convex in front and on sides, very feebly convex 
behind, mayrian furrows deeply impressed in front, becoming shallow behind, 
parapsi'dal furrows sharply impressed, with a distinct longitudinal groove on 
anterior third. Scutellum fully one-fourth broader than long, feebly convex 
in front, strongly convex behind and on sides, dorsum strongly convex, with 
a feeble longitudinal impression. Epinotum strongly convex transversely. 
In profile pro-mesonotal suture sharply defined. Pronotum short and 
vertical, feebly convex. Mesonotum strongly convex. Scutellum dome- 
shaped fully twice as long as high. Metanotum as high as long, convex on 
