Subgenus Dialictus Robertson, 1902

Dialictus Robertson, 1902: 48. Type species: Halictus anomalus Robertson 1892, by original designation and monotypy.

Lasioglossum (Dialictus) – sensu Gibbs (2018b).

Diagnosis

Lasioglossum (Dialictus) are small bees (body length 3.1–8.1 mm) whose diagnosis on a global scale is somewhat problematic due to known exceptions to diagnostic characters. But on a regional scale, L. ( Dialictus) can be reliably diagnosed from other Halictidae occurring on the Yucatán Peninsula by the combination of head and mesosoma dark (not brilliant) metallic blue, green, or golden, sometimes with red-brassy reflections; metasoma black, brown, or red; second and third fore wing submarginal crossveins weakened in the female; T1 with well-developed setose fan in the female; inner metatibial spur of the female pectinate; and male clypeus apical margin black (not yellow).