Family: Tenebrionidae
Subfamily: Lagriinae
Length: 9-14 mm
Arthromacra aenea is metallic green to coppery, with pale antennae. The overall shape is slender and elongate. Look too for dark legs with pale tarsi.
The Long-Jointed Beetles once made up their own family, Lagriidae, but taxonomists now consider them to be a subfamily within the Darkling Beetles. The common name "Long-Jointed" refers to the apical antennal segment, which is much longer than the other segments, especially in males.
Adults may be found on foliage, and are attracted to lights.
