Small black Hymenoptera in Hawaii

Above: (from left to right) Colletidae (Hylaeus sp.); Pompilidae (Anoplius sp.); Sphecidae (Ectemnius sp.); Vespidae (Odynerus sp.).
Each may be 4-7 mm & all black, while several have colored markings (particularly males).

Above: (left) Sphecidae: Ectemnius polynesialis (Cameron); (right) Pomplidae: Anoplius sp.

Above: Colletidae (Hylaeus sp.) female (left), and male (right).

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