Originally described in
Journal of the Linnean Society (Zoology), 25:171.
Diagnosis
Antennal scrobes join below frontal suture; mesoscutum with engraved and weak reticulation, meshes transverse; scutellum with engraved and weak reticulation; mesoscutum dark golden-green, metallic dark blue or metallic dark purple, scutellum metallic dark purple or metallic dark blue; propodeal callus with 2-5 setae; femora black with metallic blue tinges or golden-green; fore tibia dark brown to pale brown, mid and hind tibiae yellowish-brown with basal ½ pale brown. See also eridanus, ilius, lius and texanus.
Distribution
Anguilla, Brazil, Colombia, Costa Rica, Ecuador, Grenada, Guadeloupe, Guatemala, Honduras, Mexico, Peru, Saint Kitts, Saint Vincent, Trinidad & Tobago.
Biology
Unknown.
Similar species in Lucid key
specularis, but nigrocyaneus with frons with distinct reticulation, scutellum with engraved and weak reticulation.
texanus, but nigrocyaneus with flagellum shorter, 1.4X as long as scape.
brasiliensis, but nigrocyaneus with scutellum metallic dark purple.
Depository of primary type
Natural History Museum (BMNH), in London.