Sirthenea, Chłond, 2018

Chłond, Dominik, 2018, A taxonomic revision of the genus Sirthenea (Hemiptera: Heteroptera: Reduviidae) of the Old World, Zootaxa 4520 (1), pp. 1-85 : 8

Key to the Afrotropical species of Sirthenea

1 Pronotum uniformly black or dark brown, or posterior pronotal lobe only slightly paler than anterior lobe ( Figs. 194–196 )2

– Pronotum bicolorous (anterior pronotal lobe distinctly paler) or unicolorous (light brown to yellowish)............... 3

2 Scape surpassing apex of head ( Fig. 153 ).................................. S. (Monogmus) picescens Reuter, 1887

– Scape at most reaching apex of head.................................... S. (Sirthenea) flaviceps ( Signoret, 1860)

3 Hemelytron without yellow markings in basal part; membrane unicolorous, dark ( Fig. 197 ), four trichobothrial setae on pedicel ( Fig. 172 ).................................................. S. (Sirthenea) rodhaini Schouteden, 1913

– Hemelytron with yellow markings in basal part, membrane dark with pale apical part ( Fig. 193 ), six trichobothrial setae on pedicel ( Fig. 169 )..................................................... S. (Sirthenea) africana Distant, 1903

Figures

FIGURES 193–196. Color figures of habitus: 193—Sirthenea africana Distant, 1903; 194—S. flaviceps var. adelpha Horváth, 1909; 195—S. flaviceps var lugubris Horváth, 1909; 196—S. picescens Reuter, 1887.

FIGURES 153–155. Head in lateral view: 153—Sirthenea picescens Reuter, 1887; 154—S. kali sp. nov.; 155—S. nigronitens (Miller, 1958).

FIGURES 197–200. Color figures of habitus: 197—Sirthenea rodhaini Schouteden, 1913; 198—S. caiana Chłond, 2008; 199—S. dimidiata Horváth, 1911, male; 200—S. dimidiata, female.

FIGURES 169–182. Trichobothrial setae on pedicel: 169—Sirthenea africana Distant, 1903; 170—S. flaviceps (Signoret, 1860); 171—S. picescens Reuter, 1887; 172—S. rodhaini Schouteden, 1913; 173—S. caiana Chłond, 2008; 174—S. dimidiata Horváth, 1911; 175—S. flavipes (Stål, 1855); 176—S. kali sp. nov.; 177—S. nigronitens (Miller, 1958); 178—S. nitida Chłond, 2008; 179—S. nigra Cai & Tomokuni, 2004; 180—S. setosa sp. nov.; 181—S. laevicollis Horváth, 1909; 182—S. obscura (Stål, 1866).