[[Genus Myrmelachista ^HNS ]]

The above are a set of species described together by Wheeler from material collected by Elisabeth Skwarra in southern Mexico. They are all very similar to plebecula ^HNS and joycei ^HNS. I cannot distinguish workers of amicta ^HNS, skwarrae ^HNS (and its two subspecies picea ^HNS and laeta ^HNS), and plebecula ^HNS. The males of skwarrae ^HNS and plebecula ^HNS are distinct. The male of skwarrae ^HNS differs from plebecula ^HNS in having a basiparamere lobe and distinct (though minute) setose pygostyles. Myrmelachista skwarrae ^HNS males are more like joycei ^HNS. They differ from joycei ^HNS in the relatively thinner and more delicate basiparamere lobe and relatively larger ocelli.

If the Mexican forms prove to be geographic variants of plebecula ^HNS, the latter has priority. On the other hand, M. joycei ^HNS could prove to be a geographic variant of one of the previously named Mexican forms.