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Psyche 
[Vol. 94 
alitrunk with very long, not dense hairs, which are more devel- 
oped in the petioles and the gaster. Tibiae and scapes with 
sparse (not in all specimens preserved) outstanding hairs and a 
fine pubescence which is mostly lacking in other body parts. 
Body shining, head and thorax with long, sparse, longitudinal 
wrinkles, one particularly long wrinkle along the inner margin 
of the eye. Petioles smooth, gaster very smooth and shining. 
Light brown, gaster and top of the head brown, 3.75-3.95 mm. 
“Male: Head elongate, 1.25 times longer than wide, with 
slightly vaulted sides and very large, very convex eyes. 
Antennal clubs with very long segments, all funicular segments 
much longer than wide. Clypeus elongate, reaching behind the 
genae, its anterior border blunted in the middle, vaulted, 
smooth like the triangular frontal area. Frontal carinae 
straight, parallel, visible until the anterior ocellus, all ocelli very 
large. Thorax narrow above, anterior part of mesonotum nar- 
rowing. Alitrunk shining, with sparse longitudinal wrinkles, 
petioles smooth, with ventral teeth as in the 2, but smaller. 
Hypopygium and squamulae long, leaf-shaped. Brown, legs 
and antennae straw-yellow. 3. 3-3. 7 mm.” 
A comparison is made with other leptothoracine genera, and the 
author stresses that Leonomyrma exhibits some characters of social 
parasitic ants. Thus, the ventral projections of the petioles appear 
similar to those in Formicoxenus, the long frontal carinae resemble 
those of Chalepoxenus, the structure of the male antenna and the 
wing venation are said to match those of Myrmoxenus, to which 
Leonomyrma is closely related. It differs, however, from Myrmoxe- 
nus by the dentate mandibles of males and the queens, the strong 
epinotal spines, the rounded nodes, and the long and fine post- 
petiolar spine. From Formicoxenus it is distinguished by the 
number of antennal segments, shape of head, etc.; from Chale- 
poxenus by lacking the long scrobes along the frontal carinae, much 
stronger epinotal spines, and the long hairs; and from Epimyrma 
also by the long hairs, number of antennal segments, and so on. 
Thus, the most important difference between Leonomyrma and 
Chalepoxenus refers to the antennal scrobes, since size and shape of 
epinotal spines and the density and length of hairs usually are char- 
acters varying widely within one genus. In the original description of 
