GEOGRAPHICAL DISTRIBUTION OF 
THE GENUS MYRMOTERAS, 
INCLUDING THE DESCRIPTION OF A NEW SPECIES 
(HYMENOPTERA: FORMICIDAE) 
By Robert E. Gregg 
Department of Biology, University of Colorado 
In 1925, Carlo Emery summarized the accumulated 
knowledge concerning the ant genus Myrmoteras in the 
Genera Insectorum, Fasc. 183, p. 36, and listed four species 
with their general distribution in portions of Malay and 
the East Indies. The following brief anatomical diagnosis 
of the genus is adapted from Emery, and gives the import- 
ant distinguishing characteristics. 
Worker: monomorphic. 
Head relatively large and angular; eyes enormous, very 
convex, covering one-half to three-quarters of the sides of 
the head; ocelli present; a deep, transverse groove behind 
the ocelli separates a prominent occipital bulge from the 
vertex ; the bulge shows a marked median depression. 
Clypeus produced and with a sinuate anterior border con- 
tinuing into rather sharp clypeal teeth laterally. Frontal 
area and epistomal suture distinct. Mandibles slightly 
longer than the head, approximated at their bases, narrow 
and almost straight, armed with long teeth evenly spaced 
along the medial border; the mandibular apex with two 
quite long, sharp teeth, the terminal one representing the 
recurved tip of the mandible ; between these two teeth two 
small denticles may be present. Maxillary palps 6-seg- 
mented; labial palps 4-segmented. Frontal carinae obso- 
lete. Antennal fossae remote from the epistomal suture; 
antennae filiform and composed of 12 segments. 
Thorax resembles that of Oecophylla; pronotum and 
epinotum prominent and convex, mesonotum depressed and 
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