Rihirbus Stål 1861

Lam, Truong Xuan, Hoa, Bui Thi Quynh, Linh, Ha Ngoc & Cai, Wanzhi, 2020, A new species of the assassin bug genus Rihirbus (Hemiptera: Heteroptera Reduviidae) from Vietnam, Zootaxa 4780 (3), pp. 587-593 : 592

Key to the species of the genus Rihirbus Stål 1861

1 Anterior lobe of pronotum without obtuse tubercles posteriorly; posterior lobe without distinct punctures and wrinkles; humeral angles rounded........................................................... Rihirbus sinicus Hsiao & Ren 1981

- Anterior lobe of pronotum obtusely tuberculate posteriorly; posterior lobe distinct punctate and rugose; humeral angles produced.............................................................................................. 2

2 Post-antennal protuberance short; humeral angles of pronotum relatively sharp; postolateral margin of pronotum slightly concave and elevated; tip of fore tibia not produced into a sharp spine........................................................................................................................ Rihirbus trochantericus Stål 1861

- Post-antennal protuberance higher, cone-shaped ( Figs 1 , 3 ); humeral angles of pronotum more obtuse; postolateral margin nearly of pronotum straight ( Figs 1 , 2 ); tip of fore tibia produced into a sharp spine ( Figs 1 , 4 ).................................................................................................... Rihirbus kronganaensis sp. nov

Figures

FIGURE 1. Rihirbus kronganaensis sp. nov., female. Scale bar: 3 mm.

FIGURES 2–5. Rihirbus kronganaensis sp. nov., female. 2–3, head and pronotum; 4, foreleg; 5, left hemelytron; 2, 5, dorsal view; 3, 4, lateral view. Scale bars: 1 mm for Figs 2, 3, 5; 1.5 mm for Fig. 4.