Mecyclothorax Species

Liebherr, James K., 2009, Native And Alien Carabidae (Coleoptera) Share Lanai, An Ecologically Devastated Island, The Coleopterists Bulletin 63 (4), pp. 383-411 : 388

Key to the Mecyclothorax Species of Lanai

1. Head with two supraorbital setae each side; pronotum with lateral seta each side; elytral striae 1 and 2 evident at apex, though stria 2 may be shallower than sutural stria................................................... 2

19. Head with single posterior supraorbital seta each side; pronotum glabrous; sutural striae continuous, deep to elytral apex, but stria 2 obsolete, difficult to trace apically ( M. vitreus group)....... Mecyclothorax flavipes , new species

2(1). Discal elytral intervals with transverse-mesh microsculpture, sculpticell breadth 2–4 3 length; elytral stria 2 broad apically, nearly as deep as sutural stria at elytral apex; standardized body length 4.0– 4.5 mm ( M. ovipennis group)........................................ M. mundanus (Sharp)

29. Discal elytral intervals covered with well-developed isodiametric microsculpture, the sculpticells distinctly raised, producing a leathery appearance; elytral stria 2 traceable to apex, but distinctly shallower than sutural stria; standardized body length 4.5–5.3 mm ( M. palustris group)....................................................... M. filipes (Sharp)