Zargus schaumii, WOLLASTON, 1854

Wrase, D. W., 2010, A new species of genus Zargus WOLLASTON 1854 from Madeira (Coleoptera, Carabidae, Licinini), Linzer biologische Beiträge 42 (1), pp. 325-334 : 329-330

Key to species of Zargus schaumii -group

1 Elytral striae interrupted at about regular intervals, consisting of a series of elongate impressions strongly deepened. Pronotum cordiform with lateral sides towards posterior angles more or less rectilinearly or even weakly sinuately narrowed, on disc usually strongly wrinkled. Antennae and legs long and slender (ratio BL/MTL about 3.12). Madeira main isle......................................................................... Z. schaumii WOLL.

- Elytral striae interrupted less regularly, the elongate impressions flat or only suggested. Pronotum subquadrate with lateral sides towards posterior angles more or less weakly rounded, or almost rectangularly narrowed, on disc usually less strongly wrinkled. Antennae and legs shorter and rather more robust (ratio BL/MTL about 3.21-3.30)..........2

2 Elytral striae with a weak tendency to be interrupted with shallow, not very noticeable elongate impressions, disc weakly convex, subapical lateral sinuation weak, each elytron broadly rounded apically ( Fig. 8 ). Pronotum with lateral sides towards posterior angles more or less weakly rounded. Labrum with lobes narrow, acuminate, only weakly rounded at tip ( Fig. 6 ). Legs shorter (ratio BL/MTL about 3.30). Body piceous black with margins of pronotum and elytra narrowly lightened, legs more or less darkened. Deserta Grande. ............................................................... Z. desertae WOLL.

- Elytral striae with stronger and deeper elongate impressions (but not as strong as in Z. schaumii ), disc flattened, subapical lateral sinuation stronger, sutural angles somewhat angulate ( Fig. 7 ). Pronotum with lateral sides towards posterior angles almost rectangularly narrowed. Labrum with lobes not acuminate, wider, widely rounded at tip ( Fig. 5 ). Legs somewhat longer (ratio BL/MTL 3.21). Body reddish piceous, with a very faint brassy tinge, margins of pronotum and elytra somewhat wider lightened, appendages yellowish with tarsi somewhat infuscated. Madeira main isle........................... ................................................................................................................. Z. putzeri nov. sp.

Figures

Figs 5-9: Zargus: 5, 6: Apical part of labrum, dorsal aspect: (5) Z. putzeri nov.sp.; (6) Z. desertae WOLL.; 7, 8: Outline of apical portion of left elytron, dorsal aspect; (7) Z. putzeri nov.sp.; (8) Z. desertae WOLL.; (9) Z. putzeri nov.sp., female genitalia, left hemisternite with gonocoxites, dorsal aspect; scale bar: 0.39 mm (5, 6); 1.6 mm (7, 8); 0.47 mm (9).