Primary type information:
Primary type material: lectotype male (by designation of MacKay, 1996: 153). Primary type locality: Brazil: Pará, Belém (A. Schulz). Primary type depository: MSNG (lectotype).
Type notes:
Original type-series mixed; other specimens, now excluded from Acanthostichus fuscipennis, are Acanthostichus quadratus (MacKay, 1996: 153).