Microstigmus, or the thin-waisted social wasps, is a small genus wasp in the family Pemphredonidae.[1] This genus is found in the Neotropical realm from Central to South America. They build nests and live in colonies ranging in size from 1 to 18 members.[2]Microstigmus is widely considered to be the only true eusocial species of apoid wasp.[3]
^Robert W. Matthews & Christopher K. Starr (1987). "Microstigmus comes wasps have a method of nest construction unique among social insects". Biotropica. 16 (1): 55–58. JSTOR2387895.