"Body length 4.2 mm; width 1.6 mm.

Shiny, pronotum weakly, elytra moderately iridescent. Upper surface almost black, with clypeus, labrum and mandibles , medial part of pro- notal basal margin, first elytral interval and apex paler to darker reddish or reddish brown. Antennomeres 1 and 2 pale reddish brown, 2-8 dark and 9-11 paler brown. Legs and palpi dark yellowish brown.

A. novaecaledonicus is known only from New Caledonia, Païta."

 "Bernd JAEGER "Two new species of the Anthracus annamensis group from Australia and New Caledonia, and notes on identity and generic placement of Acupalpus angulatus MACLEAY, 1871 and Acupalpus trapezus FAUVEL, 1882 (Coleoptera, Carabidae, Harpalini, Stenolophina, Pelmatellina)" 2016.