{{Short description|Species of insect}} {{Speciesbox | image = StigmatommaTrigonignathum.jpg | genus = Stigmatomma | species = trigonignathum | authority = (Brown, 1949) | synonyms = * ''Amblyopone trigonignathum'' <small>Brown, 1949</small> }}

'''''Stigmatomma trigonignathum''''' is a species of ant in the subfamily Amblyoponinae. It is considered one of the rarest ants in the world, only known from one specimen collected in 1948<ref name=":0">{{cite journal|last=Brown|first=W. L.|year=1949|title=A new American Amblyopone, with notes on the genus (Hymenoptera: Formicidae)|journal=Psyche: A Journal of Entomology|volume=56|issue=2|pages=81–88|doi=10.1155/1949/67378 |doi-access=free |url=https://www.antwiki.org/wiki/images/f/f7/Brown_1949e.pdf}}</ref> and another observed in 2008. Both records are from the Piedmont region of North Carolina.<ref>{{cite journal | doi=10.11646/zootaxa.3552.1.1 | title=Ants of North Carolina: An updated list (Hymenoptera: Formicidae) | date=2012 | last1=Guénard | first1=Benoit | last2=McCaffrey | first2=Katherine A. | last3=Lucky | first3=Andrea | last4=Dunn | first4=Rob R. | journal=Zootaxa | volume=3552 | page=1 }}</ref>

==Description== The 1948 type specimen is 6.12&nbsp;mm long, including mandibles but excluding stinger. It is mostly uniform ferruginous in color.<ref name=":0" />

==References== {{Commons}} {{Wikispecies}} {{Reflist}}

{{Taxonbar|from=Q14404624}}

Category:Amblyoponinae Category:Insects described in 1948

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