This taxon is only known from the holotype gyne originating from Mt. Makiling, Laguna, Luzon Island.
Moffett (1985) - The only species of Myrmoteras completely lacking a frontal sulcus.
Zettel and Sorger (2011) - The type queen is unique in the genus by the combination of an absent median frontal sulcus and smooth and shiny surfaces of head and pronotum.
Keys including this Species
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
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The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- insulcatum. Myrmoteras (Myagroteras) insulcatum Moffett, 1985b: 45, figs. 33, 36, 37 (q.) PHILIPPINES.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Holotype: TL 5.6, HW 1.07, HL 1.01 (CI 106), ML 1.53 (Ml 152), SL 1.08 (SI 100), EL 0.61, HFL 1.16 (TWl 22), WL 1.54 mm. Orbital grooves moderately developed. Frontal area present but somewhat poorly demarcated. Palpal formula 3,3. Mandibles with 14 to 15 teeth and two preapical denticles. Apical denticles both tiny, the smallest very tiny and closely applied to the larger, which is closely applied in turn to the apical tooth. A feeble groove extends longitudinally down the dorsal surface of mandible to at least penultimate tooth, but unlike other ants with such a groove (Myrmoteras morowali, Myrmoteras diastematum, and some Myrmoteras bakeri), the groove extends very close to inner, toothed margin.
Node of petiole with straight, nearly vertical anterior face, posterior face steep and curving; summit wide and rounded. Ventral margin of petiole feebly convex beneath node.
Head, trunk and gaster entirely smooth and very highly polished. Hair density moderate; hairs short and moderately abundant, rising 0.08 mm on head, 0.14 mm on trunk and gaster; eight hairs on node of petiole. Dark orange red, with clypeus and occipital lobe somewhat lighter, mandibles orange yellow, legs and antennae reddish orange.
Holotype. Dealate queen deposited in Museum of Comparative Zoology from Philippines: Luzon: Lagunas: Mt. Makiling, ca. 150 m below summit, litter, Feb. 1968 (R. A. Morse).
Name from Latin in + sulcus, referring to the lack of a frontal sulcus.
- Moffett, M.W. 1985b. Revision of the genus Myrmoteras (Hymenoptera: Formicidae). Bulletin of the Museum of Comparative Zoology. 151:1-53. PDF (page 45, figs 33, 36, 37 queen described)
- Zettel, H. and Sorger, D.M. 2011. New Myrmoteras ants from the southeastern Philippines. Raffles Bulletin of Zoology. 59:61-67. PDF