Hydrophyllum
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Tenthredo mellicoxa
Tenthredo mellicoxa is a sawfly in the family Tenthredinidae. Adults are active in late summer and early autumn. The species has been documented in association with Hydrophyllum virginianum (Virginia waterleaf), a plant in the Boraginaceae family. Larvae feed on foliage of this host plant. Like other Tenthredo species, adults are predatory and feed on smaller insects in addition to consuming pollen and nectar.