Tergite 2 has moderately large, yellow side-spots which extend close to or over the side-margins of the tergite (they are widely set back from it in M. ericarum).

The legs have distinct clear orange markings (obscure in M. ericarum), and the four anterior femora have few or none of the posterior black bristles present in M. ericarum.

[5] For full characters and references, see Bartsch et al.[6] and Bei-Bienko, G.Y.

Nearctic: Alaska to Arizona (records may be referable to M. fisherii (Walton).

[13] Flowers visited include white umbellifers, Foeniculum, Euphorbia, Filipendula ulmaria, Sorbus.