Megacephala marginicollis

Häckel, Martin & Anichtchenko, Alexandr, 2015, Pseudotetracha timberensis: a new species from the Northern Territory, Australia (Coleoptera: Carabidae, Cicindelinae, Megacephalini) and considerations on the taxonomy of Pseudotetracha, Zootaxa 4057 (1), pp. 143-150 : 148

Key to species of the “ marginicollis ” group

1 Elytral punctation limited to basal half, apex smooth. Femora black or dark brown throughout ( Fig. 1 )................................................................................................ P. marginicollis ( Sloane, 1906)

– Elytral punctation restricted to basal half, at least one (third) row of foveae reaching base; foveae large and deep, widely spaced from base to apex; sometimes also sutural (first) row of fine, small, closely spaced foveae similarly extended. Femora yellowish, only their distal quarters to fifths black or dark brown ( Figs 2–3 )..................... P. timberensis sp. nov.

Figures

FIGURE 1 Pseudotetracha marginicollis (Sloane, 1906). A—male, habitus; B—aedeagus with expanded endophallus left, upper and right views; C—aedeagus in left lateral view.

FIGURE 2 Pseudotetracha timberensis sp. nov. A—male, habitus; B—aedeagus with expanded endophallus left, upper and right views; C—aedeagus in left lateral view.

FIGURE 3 Pseudotetracha timberensis sp. nov. A—female, habitus; B—proximal antennomeres, detail; C—elytral apex, detail.